[要約] RFC 8349は、ネットワークルーティング管理のためのYANGデータモデル(NMDAバージョン)を定義しています。このRFCの目的は、ネットワークデバイスのルーティング機能を効果的に管理するための標準化されたデータモデルを提供することです。

Internet Engineering Task Force (IETF)                         L. Lhotka
Request for Comments: 8349                                        CZ.NIC
Obsoletes: 8022                                                A. Lindem
Category: Standards Track                                  Cisco Systems
ISSN: 2070-1721                                                    Y. Qu
                                                                  Huawei
                                                              March 2018
        

A YANG Data Model for Routing Management (NMDA Version)

ルーティング管理用のYANGデータモデル(NMDAバージョン)

Abstract

概要

This document specifies three YANG modules and one submodule. Together, they form the core routing data model that serves as a framework for configuring and managing a routing subsystem. It is expected that these modules will be augmented by additional YANG modules defining data models for control-plane protocols, route filters, and other functions. The core routing data model provides common building blocks for such extensions -- routes, Routing Information Bases (RIBs), and control-plane protocols.

このドキュメントでは、3つのYANGモジュールと1つのサブモジュールを指定しています。これらは一緒になって、ルーティングサブシステムを構成および管理するためのフレームワークとして機能するコアルーティングデータモデルを形成します。これらのモジュールは、コントロールプレーンプロトコル、ルートフィルター、およびその他の機能のデータモデルを定義する追加のYANGモジュールによって拡張されることが期待されています。コアルーティングデータモデルは、ルート、ルーティング情報ベース(RIB)、コントロールプレーンプロトコルなどの拡張機能に共通の構成要素を提供します。

The YANG modules in this document conform to the Network Management Datastore Architecture (NMDA). This document obsoletes RFC 8022.

このドキュメントのYANGモジュールは、ネットワーク管理データストアアーキテクチャ(NMDA)に準拠しています。このドキュメントはRFC 8022を廃止します。

Status of This Memo

本文書の状態

This is an Internet Standards Track document.

これはInternet Standards Trackドキュメントです。

This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 7841.

このドキュメントは、IETF(Internet Engineering Task Force)の製品です。これは、IETFコミュニティのコンセンサスを表しています。公開レビューを受け、インターネットエンジニアリングステアリンググループ(IESG)による公開が承認されました。インターネット標準の詳細については、RFC 7841のセクション2をご覧ください。

Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc8349.

このドキュメントの現在のステータス、エラータ、およびフィードバックの提供方法に関する情報は、https://www.rfc-editor.org/info/rfc8349で入手できます。

Copyright Notice

著作権表示

Copyright (c) 2018 IETF Trust and the persons identified as the document authors. All rights reserved.

Copyright(c)2018 IETF Trustおよびドキュメントの作成者として識別された人物。全著作権所有。

This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License.

この文書は、BCP 78およびIETF文書に関するIETFトラストの法的規定(https://trustee.ietf.org/license-info)の対象であり、この文書の発行日に有効です。これらのドキュメントは、このドキュメントに関するあなたの権利と制限を説明しているため、注意深く確認してください。このドキュメントから抽出されたコードコンポーネントには、Trust Legal Provisionsのセクション4.eに記載されているSimplified BSD Licenseのテキストが含まれている必要があり、Simplified BSD Licenseに記載されているように保証なしで提供されます。

Table of Contents

目次

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Terminology and Notation  . . . . . . . . . . . . . . . . . .   4
     2.1.  Glossary of New Terms . . . . . . . . . . . . . . . . . .   5
     2.2.  Tree Diagrams . . . . . . . . . . . . . . . . . . . . . .   6
     2.3.  Prefixes in Data Node Names . . . . . . . . . . . . . . .   6
   3.  Objectives  . . . . . . . . . . . . . . . . . . . . . . . . .   6
   4.  The Design of the Core Routing Data Model . . . . . . . . . .   7
     4.1.  System-Controlled and User-Controlled List Entries  . . .   8
   5.  Basic Building Blocks . . . . . . . . . . . . . . . . . . . .   9
     5.1.  Routes  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     5.2.  Routing Information Base (RIB)  . . . . . . . . . . . . .  10
     5.3.  Control-Plane Protocol  . . . . . . . . . . . . . . . . .  11
       5.3.1.  Routing Pseudo-Protocols  . . . . . . . . . . . . . .  11
       5.3.2.  Defining New Control-Plane Protocols  . . . . . . . .  11
     5.4.  Parameters of IPv6 Router Advertisements  . . . . . . . .  12
   6.  Interactions with Other YANG Modules  . . . . . . . . . . . .  13
     6.1.  Module "ietf-interfaces"  . . . . . . . . . . . . . . . .  13
     6.2.  Module "ietf-ip"  . . . . . . . . . . . . . . . . . . . .  14
   7.  Routing Management YANG Module  . . . . . . . . . . . . . . .  15
   8.  IPv4 Unicast Routing Management YANG Module . . . . . . . . .  29
   9.  IPv6 Unicast Routing Management YANG Module . . . . . . . . .  37
     9.1.  IPv6 Router Advertisements Submodule  . . . . . . . . . .  45
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  56
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  57
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  58
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  58
     12.2.  Informative References . . . . . . . . . . . . . . . . .  60
   Appendix A.  The Complete Schema Tree . . . . . . . . . . . . . .  61
   Appendix B.  Minimum Implementation . . . . . . . . . . . . . . .  66
   Appendix C.  Example: Adding a New Control-Plane Protocol . . . .  67
   Appendix D.  Data Tree Example  . . . . . . . . . . . . . . . . .  70
   Appendix E.  NETCONF Get Data Reply Example . . . . . . . . . . .  77
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .  80
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  80
        
1. Introduction
1. はじめに

This document specifies the following YANG modules:

このドキュメントでは、次のYANGモジュールを指定しています。

o The "ietf-routing" module provides generic components of a routing data model.

o 「ietf-routing」モジュールは、ルーティングデータモデルの一般的なコンポーネントを提供します。

o The "ietf-ipv4-unicast-routing" module augments the "ietf-routing" module with additional data specific to IPv4 unicast.

o 「ietf-ipv4-unicast-routing」モジュールは、IPv4ユニキャスト固有の追加データで「ietf-routing」モジュールを拡張します。

o The "ietf-ipv6-unicast-routing" module augments the "ietf-routing" module with additional data specific to IPv6 unicast. Its submodule, "ietf-ipv6-router-advertisements", also augments the "ietf-interfaces" [RFC8343] and "ietf-ip" [RFC8344] modules with IPv6 router configuration variables required by [RFC4861].

o 「ietf-ipv6-unicast-routing」モジュールは、IPv6ユニキャストに固有の追加データで「ietf-routing」モジュールを拡張します。そのサブモジュール「ietf-ipv6-router-advertisements」も、「ietf-interfaces」[RFC8343]および「ietf-ip」[RFC8344]モジュールを、[RFC4861]が必要とするIPv6ルーター構成変数で拡張します。

These modules together define the core routing data model, which is intended as a basis for future data model development covering more-sophisticated routing systems. While these three modules can be directly used for simple IP devices with static routing (see Appendix B), their main purpose is to provide essential building blocks for more-complicated data models involving multiple control-plane protocols, multicast routing, additional address families, and advanced functions such as route filtering or policy routing. To this end, it is expected that the core routing data model will be augmented by numerous modules developed by various IETF working groups.

これらのモジュールは一緒にコアルーティングデータモデルを定義します。これは、より高度なルーティングシステムをカバーする将来のデータモデル開発の基礎として意図されています。これら3つのモジュールは、静的ルーティング(付録Bを参照)を備えた単純なIPデバイスに直接使用できますが、その主な目的は、複数のコントロールプレーンプロトコル、マルチキャストルーティング、追加のアドレスファミリを含む、より複雑なデータモデルに不可欠なビルディングブロックを提供することです。ルートフィルタリングやポリシールーティングなどの高度な機能。この目的のために、コアルーティングデータモデルは、さまざまなIETFワーキンググループによって開発された多数のモジュールによって拡張されることが期待されています。

The YANG modules in this document conform to the Network Management Datastore Architecture (NMDA) [RFC8342]. This document obsoletes RFC 8022 [RFC8022].

このドキュメントのYANGモジュールは、ネットワーク管理データストアアーキテクチャ(NMDA)[RFC8342]に準拠しています。このドキュメントはRFC 8022 [RFC8022]を廃止します。

2. Terminology and Notation
2. 用語と表記

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all capitals, as shown here.

キーワード「MUST」、「MUST NOT」、「REQUIRED」、「SHALL」、「SHALL NOT」、「SHOULD」、「SHOULD NOT」、「RECOMMENDED」、「NOT RECOMMENDED」、「MAY」、「OPTIONALこのドキュメントの「」は、BCP 14 [RFC2119] [RFC8174]で説明されているように解釈されます。

The following terms are defined in [RFC8342]:

以下の用語は[RFC8342]で定義されています:

o client

o クライアント

o server

o サーバ

o configuration o system state

お こんふぃぐらちおん お sysてm sたて

o operational state

o 稼働状態

o intended configuration

o 意図した構成

The following terms are defined in [RFC7950]:

以下の用語は[RFC7950]で定義されています:

o action

o アクション

o augment

o 増強

o container

o コンテナ

o data model

o データ・モデル

o data node

o だた ので

o feature

o 特徴

o leaf

o 葉

o list

o リスト

o mandatory node

o まんだとry ので

o module

o モジュール

o presence container

o プレゼンスコンテナ

o schema tree

o スキーマツリー

o RPC (Remote Procedure Call) operation

o RPC(リモートプロシージャコール)操作

2.1. Glossary of New Terms
2.1. 新しい用語集

core routing data model: YANG data model comprising "ietf-routing", "ietf-ipv4-unicast-routing", and "ietf-ipv6-unicast-routing" modules.

コアルーティングデータモデル:「ietf-routing」、「ietf-ipv4-unicast-routing」、および「ietf-ipv6-unicast-routing」モジュールで構成されるYANGデータモデル。

direct route: A route to a directly connected network.

直接ルート:直接接続されたネットワークへのルート。

Routing Information Base (RIB): An object containing a list of routes, together with other information. See Section 5.2 for details.

ルーティング情報ベース(RIB):他の情報とともにルートのリストを含むオブジェクト。詳細については、セクション5.2を参照してください。

system-controlled entry: An entry in a list in the operational state ("config false") that is created by the system independently of what has been explicitly configured. See Section 4.1 for details.

システム制御のエントリ:明示的に構成されているものとは無関係にシステムによって作成される、動作状態( "config false")のリスト内のエントリ。詳細については、セクション4.1を参照してください。

user-controlled entry: An entry in a list in the operational state ("config false") that is created and deleted as a direct consequence of certain configuration changes. See Section 4.1 for details.

ユーザー制御のエントリ:特定の構成変更の直接的な結果として作成および削除される、動作状態( "config false")のリスト内のエントリ。詳細については、セクション4.1を参照してください。

2.2. Tree Diagrams
2.2. ツリー図

Tree diagrams used in this document follow the notation defined in [RFC8340].

このドキュメントで使用されるツリー図は、[RFC8340]で定義された表記に従います。

2.3. Prefixes in Data Node Names
2.3. データノード名のプレフィックス

In this document, names of data nodes, actions, and other data model objects are often used without a prefix, as long as it is clear from the context in which YANG module each name is defined. Otherwise, names are prefixed using the standard prefix associated with the corresponding YANG module, as shown in Table 1.

このドキュメントでは、データノード、アクション、およびその他のデータモデルオブジェクトの名前は、YANGモジュールの各名前が定義されているコンテキストから明らかである限り、プレフィックスなしで使用されることがよくあります。それ以外の場合、表1に示すように、対応するYANGモジュールに関連付けられた標準の接頭辞を使用して名前に接頭辞が付けられます。

            +--------+---------------------------+-----------+
            | Prefix | YANG module               | Reference |
            +--------+---------------------------+-----------+
            | if     | ietf-interfaces           | [RFC8343] |
            | ip     | ietf-ip                   | [RFC8344] |
            | rt     | ietf-routing              | Section 7 |
            | v4ur   | ietf-ipv4-unicast-routing | Section 8 |
            | v6ur   | ietf-ipv6-unicast-routing | Section 9 |
            | yang   | ietf-yang-types           | [RFC6991] |
            | inet   | ietf-inet-types           | [RFC6991] |
            +--------+---------------------------+-----------+
        

Table 1: Prefixes and Corresponding YANG Modules

表1:接頭辞と対応するYANGモジュール

3. Objectives
3. 目的

The initial design of the core routing data model was driven by the following objectives:

コアルーティングデータモデルの最初の設計は、次の目的によって推進されました。

o The data model should be suitable for the common address families -- in particular, IPv4 and IPv6 -- and for unicast and multicast routing, as well as Multiprotocol Label Switching (MPLS).

o データモデルは、一般的なアドレスファミリ(特にIPv4とIPv6)、およびユニキャストとマルチキャストルーティング、およびマルチプロトコルラベルスイッチング(MPLS)に適している必要があります。

o A simple IP routing system, such as one that uses only static routing, should be configurable in a simple way, ideally without any need to develop additional YANG modules.

o 静的ルーティングのみを使用するような単純なIPルーティングシステムは、理想的には追加のYANGモジュールを開発する必要なしに、単純な方法で構成可能でなければなりません。

o On the other hand, the core routing framework must allow for complicated implementations involving multiple RIBs and multiple control-plane protocols, as well as controlled redistributions of routing information.

o 一方、コアルーティングフレームワークは、複数のRIBと複数のコントロールプレーンプロトコルを含む複雑な実装、およびルーティング情報の制御された再配布を可能にする必要があります。

o Because device vendors will want to map the data models built on this generic framework to their proprietary data models and configuration interfaces, the framework should be flexible enough to facilitate such mapping and accommodate data models with different logic.

o デバイスベンダーは、この汎用フレームワークで構築されたデータモデルを独自のデータモデルおよび構成インターフェイスにマップする必要があるため、フレームワークは、そのようなマッピングを容易にし、さまざまなロジックのデータモデルに対応できる十分な柔軟性が必要です。

4. The Design of the Core Routing Data Model
4. コアルーティングデータモデルの設計

The core routing data model consists of three YANG modules and one submodule. The first module, "ietf-routing", defines the generic components of a routing system. The other two modules -- "ietf-ipv4-unicast-routing" and "ietf-ipv6-unicast-routing" -- augment the "ietf-routing" module with additional data nodes that are needed for IPv4 and IPv6 unicast routing, respectively. The "ietf-ipv6-unicast-routing" module has a submodule, "ietf-ipv6-router-advertisements", that augments the "ietf-interfaces" [RFC8343] and "ietf-ip" [RFC8344] modules with configuration variables for IPv6 Router Advertisements as required by [RFC4861].

コアルーティングデータモデルは、3つのYANGモジュールと1つのサブモジュールで構成されています。最初のモジュール「ietf-routing」は、ルーティングシステムの一般的なコンポーネントを定義します。他の2つのモジュール-"ietf-ipv4-unicast-routing"および "ietf-ipv6-unicast-routing"-IPv4およびIPv6ユニキャストルーティングにそれぞれ必要な追加のデータノードを使用して、 "ietf-ipv6-unicast-routing"モジュールを拡張します。 。 「ietf-ipv6-unicast-routing」モジュールには、「ietf-ipv6-router-advertisements」というサブモジュールがあり、「ietf-interfaces」[RFC8343]および「ietf-ip」[RFC8344]モジュールを構成変数で[RFC4861]で要求されているIPv6ルーターアドバタイズメント。

Figure 1 shows abridged views of the hierarchies. See Appendix A for the complete data trees.

図1は、階層の要約ビューを示しています。完全なデータツリーについては、付録Aを参照してください。

   +--rw routing
      +--rw router-id?                 yang:dotted-quad
      +--ro interfaces
      |  +--ro interface*   if:interface-ref
      +--rw control-plane-protocols
      |  +--rw control-plane-protocol* [type name]
      |     +--rw type             identityref
      |     +--rw name             string
      |     +--rw description?     string
      |     +--rw static-routes
      |        +--rw v4ur:ipv4
      |        |     ...
      |        +--rw v6ur:ipv6
      |              ...
      +--rw ribs
         +--rw rib* [name]
            +--rw name              string
            +--rw address-family?   identityref
            +--ro default-rib?      boolean {multiple-ribs}?
            +--ro routes
            |  +--ro route*
            |        ...
            +---x active-route
            |  +---w input
            |  |  +---w v4ur:destination-address?   inet:ipv4-address
            |  |  +---w v6ur:destination-address?   inet:ipv6-address
            |  +--ro output
            |        ...
            +--rw description?      string
        

Figure 1: Data Hierarchy

図1:データ階層

As can be seen from Figure 1, the core routing data model introduces several generic components of a routing framework: routes, RIBs containing lists of routes, and control-plane protocols. Section 5 describes these components in more detail.

図1からわかるように、コアルーティングデータモデルは、ルーティングフレームワークのいくつかの一般的なコンポーネントを導入します。ルート、ルートのリストを含むRIB、およびコントロールプレーンプロトコルです。セクション5では、これらのコンポーネントについて詳しく説明します。

4.1. System-Controlled and User-Controlled List Entries
4.1. システム制御およびユーザー制御のリストエントリ

The core routing data model defines several lists in the schema tree, such as "rib", that have to be populated with at least one entry in any properly functioning device, and additional entries may be configured by a client.

コアルーティングデータモデルは、「rib」などのスキーマツリーにいくつかのリストを定義します。これらのリストには、適切に機能しているデバイスの少なくとも1つのエントリを入力する必要があり、追加のエントリをクライアントで構成できます。

In such a list, the server creates the required item as a "system-controlled entry" in the operational state, i.e., inside read-only lists in the "routing" container.

このようなリストでは、サーバーは必要なアイテムを操作状態の「システム制御エントリ」として、つまり「ルーティング」コンテナの読み取り専用リスト内に作成します。

An example can be seen in Appendix D: the "/routing/ribs/rib" list has two system-controlled entries -- "ipv4-master" and "ipv6-master".

例を付録Dに示します。「/ routing / ribs / rib」リストには、システムで制御される2つのエントリ「ipv4-master」と「ipv6-master」があります。

Additional entries called "user-controlled entries" may be created in the configuration by a client, e.g., via the Network Configuration Protocol (NETCONF). If the server accepts a configured user-controlled entry, then this entry also appears in the operational state version of the list.

「ユーザー制御のエントリ」と呼ばれる追加のエントリは、ネットワーク構成プロトコル(NETCONF)などを介して、クライアントによって構成内に作成できます。サーバーが構成済みのユーザー制御エントリーを受け入れる場合、このエントリーはリストの操作状態バージョンにも表示されます。

Corresponding entries in both versions of the list (in the intended configuration and the operational state) [RFC8342] have the same value of the list key.

リストの両方のバージョン(意図した構成と運用状態)の対応するエントリ[RFC8342]には、リストキーの同じ値があります。

A client may also provide supplemental configuration of system-controlled entries. To do so, the client creates a new entry in the configuration with the desired contents. In order to bind this entry to the corresponding entry in the operational state, the key of the configuration entry has to be set to the same value as the key of the operational state entry.

クライアントは、システム制御のエントリの補足構成も提供できます。これを行うために、クライアントは目的のコンテンツを含む構成で新しいエントリを作成します。このエントリを運用状態の対応するエントリにバインドするには、構成エントリのキーを運用状態エントリのキーと同じ値に設定する必要があります。

Deleting a user-controlled entry from the intended configuration results in the removal of the corresponding entry in the operational state list. In contrast, if a client deletes a system-controlled entry from the intended configuration, only the extra configuration specified in that entry is removed; the corresponding operational state entry is not removed.

目的の構成からユーザー制御のエントリを削除すると、操作状態リストから対応するエントリが削除されます。対照的に、クライアントが目的の構成からシステム制御のエントリを削除すると、そのエントリで指定された追加の構成のみが削除されます。対応する動作状態エントリは削除されません。

5. Basic Building Blocks
5. 基本的なビルディングブロック

This section describes the essential components of the core routing data model.

このセクションでは、コアルーティングデータモデルの重要なコンポーネントについて説明します。

5.1. Routes
5.1. ルート

Routes are basic elements of information in a routing system. The core routing data model defines only the following minimal set of route attributes:

ルートは、ルーティングシステムにおける情報の基本的な要素です。コアルーティングデータモデルは、以下の最小限のルート属性セットのみを定義します。

o "destination-prefix": address prefix specifying the set of destination addresses for which the route may be used. This attribute is mandatory.

o "destination-prefix":ルートを使用できる宛先アドレスのセットを指定するアドレスプレフィックス。この属性は必須です。

o "route-preference": an integer value (also known as "administrative distance") that is used for selecting a preferred route among routes with the same destination prefix. A lower value indicates a route that is more preferred.

o 「route-preference」:整数値(「アドミニストレーティブディスタンス」とも呼ばれる)。同じ宛先プレフィックスを持つルートから優先ルートを選択するために使用されます。値が小さいほど、ルートが優先されます。

o "next-hop": determines the outgoing interface and/or next-hop address(es), or a special operation to be performed on a packet.

o 「ネクストホップ」:発信インターフェイスやネクストホップアドレス、またはパケットに対して実行される特別な操作を決定します。

Routes are primarily system state and appear as entries in RIBs (Section 5.2), but they may also be found in configuration data -- for example, as manually configured static routes. In the latter case, configurable route attributes are generally a subset of attributes defined for RIB routes.

ルートは主にシステム状態であり、RIB(セクション5.2)のエントリとして表示されますが、手動で構成された静的ルートなどの構成データにも含まれている場合があります。後者の場合、構成可能なルート属性は、通常、RIBルートに対して定義された属性のサブセットです。

5.2. Routing Information Base (RIB)
5.2. ルーティング情報ベース(RIB)

Every implementation of the core routing data model manages one or more RIBs. A RIB is a list of routes complemented with administrative data. Each RIB contains only routes of one address family. An address family is represented by an identity derived from the "rt:address-family" base identity.

コアルーティングデータモデルのすべての実装は、1つ以上のRIBを管理します。 RIBは、管理データで補完されたルートのリストです。各RIBには、1つのアドレスファミリのルートのみが含まれています。アドレスファミリは、「rt:address-family」ベースアイデンティティから派生したアイデンティティによって表されます。

In the core routing data model, RIBs are represented as entries in the list "/routing/ribs/rib" in the operational state. The contents of RIBs are controlled and manipulated by control-plane protocol operations that may result in route additions, removals, and modifications. This also includes manipulations via the "static" and/or "direct" pseudo-protocols; see Section 5.3.1.

コアルーティングデータモデルでは、RIBは動作状態のリスト「/ routing / ribs / rib」のエントリとして表されます。 RIBの内容は、ルートの追加、削除、変更が発生する可能性のあるコントロールプレーンプロトコル操作によって制御および操作されます。これには、「静的」または「直接」の疑似プロトコルによる操作も含まれます。セクション5.3.1を参照してください。

For every supported address family, exactly one RIB MUST be marked as the "default RIB", in which control-plane protocols place their routes by default.

サポートされているすべてのアドレスファミリで、1つのRIBを「デフォルトRIB」としてマークする必要があります。この場合、コントロールプレーンプロトコルはデフォルトでルートを配置します。

Simple router implementations that do not advertise the "multiple-ribs" feature will typically create one system-controlled RIB per supported address family and mark it as the default RIB.

「マルチリブ」機能をアドバタイズしない単純なルーター実装は、通常、サポートされているアドレスファミリごとに1つのシステム制御RIBを作成し、それをデフォルトのRIBとしてマークします。

More-complex router implementations advertising the "multiple-ribs" feature support multiple RIBs per address family that can be used for policy routing and other purposes.

「マルチリブ」機能をアドバタイズする、より複雑なルータの実装では、ポリシールーティングやその他の目的に使用できるアドレスファミリごとに複数のRIBをサポートしています。

The following action (see Section 7.15 of [RFC7950]) is defined for the "rib" list:

次のアクション([RFC7950]のセクション7.15を参照)は、「rib」リストに対して定義されています。

o active-route -- return the active RIB route for the destination address that is specified as the action's input parameter.

o active-route-アクションの入力パラメーターとして指定された宛先アドレスのアクティブなRIBルートを返します。

5.3. Control-Plane Protocol
5.3. コントロールプレーンプロトコル

The core routing data model provides an open-ended framework for defining multiple control-plane protocol instances, e.g., for Layer 3 routing protocols. Each control-plane protocol instance MUST be assigned a type, which is an identity derived from the "rt:control-plane-protocol" base identity. The core routing data model defines two identities for the "direct" and "static" pseudo-protocols (Section 5.3.1).

コアルーティングデータモデルは、レイヤー3ルーティングプロトコルなど、複数のコントロールプレーンプロトコルインスタンスを定義するためのオープンエンドフレームワークを提供します。各コントロールプレーンプロトコルインスタンスには、「rt:control-plane-protocol」ベースアイデンティティから派生したアイデンティティであるタイプを割り当てる必要があります。コアルーティングデータモデルは、「直接」および「静的」擬似プロトコルの2つのIDを定義します(セクション5.3.1)。

Multiple control-plane protocol instances of the same type MAY be configured.

同じタイプの複数のコントロールプレーンプロトコルインスタンスを設定できます。

5.3.1. Routing Pseudo-Protocols
5.3.1. 疑似プロトコルのルーティング

The core routing data model defines two special routing protocol types -- "direct" and "static". Both are in fact pseudo-protocols, which means that they are confined to the local device and do not exchange any routing information with adjacent routers.

コアルーティングデータモデルは、「直接」と「静的」という2つの特別なルーティングプロトコルタイプを定義します。どちらも実際には疑似プロトコルです。つまり、ローカルデバイスに限定されており、隣接するルーターとルーティング情報を交換しません。

Every implementation of the core routing data model MUST provide exactly one instance of the "direct" pseudo-protocol type. It is the source of direct routes for all configured address families. Direct routes are normally supplied by the operating system kernel, based on the configuration of network interface addresses; see Section 6.2.

コアルーティングデータモデルのすべての実装は、「直接」の疑似プロトコルタイプのインスタンスを1つだけ提供する必要があります。これは、設定されたすべてのアドレスファミリの直接ルートのソースです。直接ルートは通常、ネットワークインターフェイスアドレスの構成に基づいて、オペレーティングシステムカーネルによって提供されます。セクション6.2を参照してください。

A pseudo-protocol of the type "static" allows for specifying routes manually. It MAY be configured in zero or multiple instances, although a typical configuration will have exactly one instance.

「静的」タイプの疑似プロトコルでは、ルートを手動で指定できます。通常の構成ではインスタンスが1つだけですが、0または複数のインスタンスで構成できます。

5.3.2. Defining New Control-Plane Protocols
5.3.2. 新しいコントロールプレーンプロトコルの定義

It is expected that future YANG modules will create data models for additional control-plane protocol types. Such new modules will have to define the protocol-specific data nodes, and they will have to integrate into the core routing framework in the following way:

将来のYANGモジュールは、追加のコントロールプレーンプロトコルタイプのデータモデルを作成することが予想されます。このような新しいモジュールは、プロトコル固有のデータノードを定義する必要があり、次の方法でコアルーティングフレームワークに統合する必要があります。

o A new identity MUST be defined for the control-plane protocol, and its base identity MUST be set to "rt:control-plane-protocol" or to an identity derived from "rt:control-plane-protocol".

o コントロールプレーンプロトコルに対して新しいIDを定義する必要があり、その基本IDは「rt:control-plane-protocol」または「rt:control-plane-protocol」から派生したIDに設定する必要があります。

o Additional route attributes MAY be defined, preferably in one place by means of defining a YANG grouping. The new attributes have to be inserted by augmenting the definitions of the node

o 追加のルート属性は、できればYANGグループ化を定義することにより1か所で定義できます。ノードの定義を追加して、新しい属性を挿入する必要があります

       /rt:routing/rt:ribs/rt:rib/rt:routes/rt:route
        

and possibly other places in the schema tree.

そしておそらくスキーマツリーの他の場所。

o Data nodes for the new protocol can be defined by augmenting the "control-plane-protocol" data node under "/routing".

o 新しいプロトコルのデータノードは、「/ routing」の下の「control-plane-protocol」データノードを拡張することで定義できます。

By using a "when" statement, the augmented data nodes specific to the new protocol SHOULD be made conditional and valid only if the value of "rt:type" or "rt:source-protocol" is equal to (or derived from) the new protocol's identity.

"when"ステートメントを使用することにより、新しいプロトコルに固有の拡張データノードは、 "rt:type"または "rt:source-protocol"の値が新しいプロトコルのアイデンティティ。

It is also RECOMMENDED that protocol-specific data nodes be encapsulated in an appropriately named container with presence. Such a container may contain mandatory data nodes that are otherwise forbidden at the top level of an augment.

プロトコル固有のデータノードを、適切に名前が付けられたコンテナにカプセル化してプレゼンスすることも推奨されます。このようなコンテナーには、オーグメントの最上位で禁止されている必須のデータノードが含まれている場合があります。

The above steps are implemented by the example YANG module for the Routing Information Protocol (RIP); see Appendix C.

上記の手順は、ルーティング情報プロトコル(RIP)のサンプルYANGモジュールによって実装されます。付録Cを参照してください。

5.4. Parameters of IPv6 Router Advertisements
5.4. IPv6ルーターアドバタイズメントのパラメーター

The YANG module "ietf-ipv6-router-advertisements" (Section 9.1), which is a submodule of the "ietf-ipv6-unicast-routing" module, augments the schema tree of IPv6 interfaces with definitions of the following variables as required by Section 6.2.1 of [RFC4861]:

「ietf-ipv6-unicast-routing」モジュールのサブモジュールであるYANGモジュール「ietf-ipv6-router-advertisements」(セクション9.1)は、IPv6インターフェースのスキーマツリーを次の変数の定義で拡張します。 [RFC4861]のセクション6.2.1:

o send-advertisements

o アドバタイズを送信する

o max-rtr-adv-interval

o max-rtr-adv-interval

o min-rtr-adv-interval

o μη-ρτρ-αδυ-interval

o managed-flag

o 管理フラグ

o other-config-flag

o その他の構成フラグ

o link-mtu

o リンクパーソン

o reachable-time

o 到達可能時間

o retrans-timer

o 再送タイマー

o cur-hop-limit o default-lifetime

o cur-hop-limit o default-lifetime

o prefix-list: a list of prefixes to be advertised.

o prefix-list:アドバタイズされるプレフィックスのリスト。

The following parameters are associated with each prefix in the list:

次のパラメータは、リストの各プレフィックスに関連付けられています。

* valid-lifetime

* 有効期間

* on-link-flag

* オンリンクフラグ

* preferred-lifetime

* 推奨寿命

* autonomous-flag

* 自律フラグ

NOTES:

ノート:

1. The "IsRouter" flag, which is also required by [RFC4861], is implemented in the "ietf-ip" module [RFC8344] (leaf "ip:forwarding").

1. [RFC4861]でも必要とされる「IsRouter」フラグは、「ietf-ip」モジュール[RFC8344]に実装されています(リーフ「ip:forwarding」)。

2. The Neighbor Discovery specification [RFC4861] allows the implementations to decide whether the "valid-lifetime" and "preferred-lifetime" parameters remain the same in consecutive advertisements or decrement in real time. However, the latter behavior seems problematic because the values might be reset again to the (higher) configured values after a configuration is reloaded. Moreover, no implementation is known to use the decrementing behavior. The "ietf-ipv6-router-advertisements" submodule therefore stipulates the former behavior with constant values.

2. Neighbor Discovery仕様[RFC4861]では、「valid-lifetime」パラメータと「preferred-lifetime」パラメータが連続する通知で同じままであるか、リアルタイムで減少するかを実装が決定できるようにしています。ただし、構成が再ロードされた後、値が(より高い)構成値に再度リセットされる可能性があるため、後者の動作には問題があるようです。さらに、デクリメント動作を使用する実装は知られていない。したがって、「ietf-ipv6-router-advertisements」サブモジュールは、以前の動作を定数値で規定しています。

6. Interactions with Other YANG Modules
6. 他のYANGモジュールとの相互作用

The semantics of the core routing data model also depends on several configuration parameters that are defined in other YANG modules.

コアルーティングデータモデルのセマンティクスは、他のYANGモジュールで定義されているいくつかの構成パラメーターにも依存します。

6.1. Module "ietf-interfaces"
6.1. モジュール「ietf-interfaces」

The following boolean switch is defined in the "ietf-interfaces" YANG module [RFC8343]:

次のブールスイッチは、「ietf-interfaces」YANGモジュール[RFC8343]で定義されています。

   /if:interfaces/if:interface/if:enabled
        

If this switch is set to "false" for a network-layer interface, then all routing and forwarding functions MUST be disabled on this interface.

このスイッチがネットワーク層インターフェースに対して「false」に設定されている場合、このインターフェースではすべてのルーティングおよび転送機能を無効にする必要があります。

6.2. Module "ietf-ip"
6.2. モジュール「ietf-ip」

The following boolean switches are defined in the "ietf-ip" YANG module [RFC8344]:

次のブールスイッチは、「ietf-ip」YANGモジュール[RFC8344]で定義されています。

   /if:interfaces/if:interface/ip:ipv4/ip:enabled
        

If this switch is set to "false" for a network-layer interface, then all IPv4 routing and forwarding functions MUST be disabled on this interface.

このスイッチがネットワーク層インターフェースに対して「false」に設定されている場合、すべてのIPv4ルーティングおよび転送機能をこのインターフェースで無効にする必要があります。

   /if:interfaces/if:interface/ip:ipv4/ip:forwarding
        

If this switch is set to "false" for a network-layer interface, then the forwarding of IPv4 datagrams through this interface MUST be disabled. However, the interface MAY participate in other IPv4 routing functions, such as routing protocols.

このスイッチがネットワーク層インターフェースに対して「false」に設定されている場合、このインターフェースを介したIPv4データグラムの転送を無効にする必要があります。ただし、インターフェイスは、ルーティングプロトコルなどの他のIPv4ルーティング機能に参加してもかまいません(MAY)。

   /if:interfaces/if:interface/ip:ipv6/ip:enabled
        

If this switch is set to "false" for a network-layer interface, then all IPv6 routing and forwarding functions MUST be disabled on this interface.

このスイッチがネットワークレイヤーインターフェイスに対して "false"に設定されている場合、すべてのIPv6ルーティングおよび転送機能をこのインターフェイスで無効にする必要があります。

   /if:interfaces/if:interface/ip:ipv6/ip:forwarding
        

If this switch is set to "false" for a network-layer interface, then the forwarding of IPv6 datagrams through this interface MUST be disabled. However, the interface MAY participate in other IPv6 routing functions, such as routing protocols.

このスイッチがネットワーク層インターフェースに対して「false」に設定されている場合、このインターフェースを介したIPv6データグラムの転送を無効にする必要があります。ただし、インターフェイスは、ルーティングプロトコルなどの他のIPv6ルーティング機能に参加してもかまいません(MAY)。

In addition, the "ietf-ip" module allows for configuring IPv4 and IPv6 addresses and network prefixes or masks on network-layer interfaces. Configuration of these parameters on an enabled interface MUST result in an immediate creation of the corresponding direct route. The destination prefix of this route is set according to the configured IP address and network prefix/mask, and the interface is set as the outgoing interface for that route.

さらに、「ietf-ip」モジュールを使用すると、ネットワークレイヤーインターフェイスでIPv4およびIPv6アドレスとネットワークプレフィックスまたはマスクを構成できます。有効なインターフェイスでこれらのパラメーターを構成すると、対応する直接ルートが即座に作成される必要があります。このルートの宛先プレフィックスは、構成されたIPアドレスとネットワークプレフィックス/マスクに従って設定され、インターフェイスはそのルートの発信インターフェイスとして設定されます。

7. Routing Management YANG Module
7. ルーティング管理YANGモジュール
   <CODE BEGINS> file "ietf-routing@2018-03-13.yang"
        
   module ietf-routing {
     yang-version "1.1";
     namespace "urn:ietf:params:xml:ns:yang:ietf-routing";
     prefix "rt";
        
     import ietf-yang-types {
       prefix "yang";
     }
        
     import ietf-interfaces {
       prefix "if";
       description
         "An 'ietf-interfaces' module version that is compatible with
          the Network Management Datastore Architecture (NMDA)
          is required.";
     }
        
     organization
       "IETF NETMOD (Network Modeling) Working Group";
     contact
       "WG Web:   <https://datatracker.ietf.org/wg/netmod/>
        WG List:  <mailto:rtgwg@ietf.org>
        
        Editor:   Ladislav Lhotka
                  <mailto:lhotka@nic.cz>
                  Acee Lindem
                  <mailto:acee@cisco.com>
                  Yingzhen Qu
                  <mailto:yingzhen.qu@huawei.com>";
        

description "This YANG module defines essential components for the management of a routing subsystem. The model fully conforms to the Network Management Datastore Architecture (NMDA).

説明「このYANGモジュールは、ルーティングサブシステムの管理に不可欠なコンポーネントを定義します。モデルは、ネットワーク管理データストアアーキテクチャ(NMDA)に完全に準拠しています。

Copyright (c) 2018 IETF Trust and the persons identified as authors of the code. All rights reserved.

Copyright(c)2018 IETF Trustおよびコードの作成者として識別された人物。全著作権所有。

Redistribution and use in source and binary forms, with or without modification, is permitted pursuant to, and subject to the license terms contained in, the Simplified BSD License set forth in Section 4.c of the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info).

ソースおよびバイナリ形式での再配布および使用は、変更の有無にかかわらず、IETF文書に関連するIETFトラストの法的規定のセクション4.cに記載されているSimplified BSD Licenseに従い、それに含まれるライセンス条項に従って許可されます( https://trustee.ietf.org/license-info)。

This version of this YANG module is part of RFC 8349; see the RFC itself for full legal notices.";

このYANGモジュールのこのバージョンはRFC 8349の一部です。完全な法的通知については、RFC自体を参照してください。 ";

     revision 2018-03-13 {
       description
         "Network Management Datastore Architecture (NMDA) revision.";
       reference
         "RFC 8349: A YANG Data Model for Routing Management
                    (NMDA Version)";
     }
        
     revision 2016-11-04 {
          description
            "Initial revision.";
          reference
            "RFC 8022: A YANG Data Model for Routing Management";
     }
        
     /* Features */
     feature multiple-ribs {
       description
         "This feature indicates that the server supports
          user-defined RIBs.
        
          Servers that do not advertise this feature SHOULD provide
          exactly one system-controlled RIB per supported address family
          and also make it the default RIB.  This RIB then appears as an
          entry in the list '/routing/ribs/rib'.";
     }
        

feature router-id { description "This feature indicates that the server supports an explicit 32-bit router ID that is used by some routing protocols.

feature router-id {description "この機能は、サーバーが一部のルーティングプロトコルで使用される明示的な32ビットルーターIDをサポートすることを示します。

          Servers that do not advertise this feature set a router ID
          algorithmically, usually to one of the configured IPv4
          addresses.  However, this algorithm is implementation
          specific.";
     }
        
     /* Identities */
        
     identity address-family {
       description
         "Base identity from which identities describing address
          families are derived.";
     }
     identity ipv4 {
       base address-family;
       description
         "This identity represents an IPv4 address family.";
     }
        
     identity ipv6 {
       base address-family;
       description
         "This identity represents an IPv6 address family.";
     }
        
     identity control-plane-protocol {
       description
         "Base identity from which control-plane protocol identities are
          derived.";
     }
        
     identity routing-protocol {
       base control-plane-protocol;
       description
         "Identity from which Layer 3 routing protocol identities are
          derived.";
     }
        
     identity direct {
       base routing-protocol;
       description
         "Routing pseudo-protocol that provides routes to directly
          connected networks.";
     }
        
     identity static {
       base routing-protocol;
       description
         "'Static' routing pseudo-protocol.";
     }
        
     /* Type Definitions */
        
     typedef route-preference {
       type uint32;
       description
         "This type is used for route preferences.";
     }
        
     /* Groupings */
     grouping address-family {
       description
         "This grouping provides a leaf identifying an address
          family.";
       leaf address-family {
         type identityref {
           base address-family;
         }
         mandatory true;
         description
           "Address family.";
       }
     }
        
     grouping router-id {
       description
         "This grouping provides a router ID.";
       leaf router-id {
         type yang:dotted-quad;
         description
           "A 32-bit number in the form of a dotted quad that is used by
            some routing protocols identifying a router.";
         reference
           "RFC 2328: OSPF Version 2";
       }
     }
        
     grouping special-next-hop {
       description
         "This grouping provides a leaf with an enumeration of special
          next hops.";
       leaf special-next-hop {
         type enumeration {
           enum blackhole {
             description
               "Silently discard the packet.";
           }
           enum unreachable {
             description
               "Discard the packet and notify the sender with an error
                message indicating that the destination host is
                unreachable.";
           }
           enum prohibit {
             description
               "Discard the packet and notify the sender with an error
                message indicating that the communication is
                administratively prohibited.";
        
           }
           enum receive {
             description
               "The packet will be received by the local system.";
           }
         }
         description
           "Options for special next hops.";
       }
     }
        
     grouping next-hop-content {
       description
         "Generic parameters of next hops in static routes.";
       choice next-hop-options {
         mandatory true;
         description
           "Options for next hops in static routes.
        
            It is expected that further cases will be added through
            augments from other modules.";
         case simple-next-hop {
           description
             "This case represents a simple next hop consisting of the
              next-hop address and/or outgoing interface.
        
              Modules for address families MUST augment this case with a
              leaf containing a next-hop address of that address
              family.";
           leaf outgoing-interface {
             type if:interface-ref;
             description
               "Name of the outgoing interface.";
           }
         }
         case special-next-hop {
           uses special-next-hop;
         }
         case next-hop-list {
           container next-hop-list {
             description
               "Container for multiple next hops.";
             list next-hop {
               key "index";
               description
                 "An entry in a next-hop list.
        
                  Modules for address families MUST augment this list
                  with a leaf containing a next-hop address of that
                  address family.";
               leaf index {
                 type string;
                 description
                   "A user-specified identifier utilized to uniquely
                    reference the next-hop entry in the next-hop list.
                    The value of this index has no semantic meaning
                    other than for referencing the entry.";
               }
               leaf outgoing-interface {
                 type if:interface-ref;
                 description
                   "Name of the outgoing interface.";
               }
             }
           }
         }
       }
     }
        
     grouping next-hop-state-content {
       description
         "Generic state parameters of next hops.";
       choice next-hop-options {
         mandatory true;
         description
           "Options for next hops.
        
            It is expected that further cases will be added through
            augments from other modules, e.g., for recursive
            next hops.";
         case simple-next-hop {
           description
             "This case represents a simple next hop consisting of the
              next-hop address and/or outgoing interface.
        
              Modules for address families MUST augment this case with a
              leaf containing a next-hop address of that address
              family.";
           leaf outgoing-interface {
             type if:interface-ref;
             description
               "Name of the outgoing interface.";
           }
         }
         case special-next-hop {
           uses special-next-hop;
        
         }
         case next-hop-list {
           container next-hop-list {
             description
               "Container for multiple next hops.";
             list next-hop {
               description
                 "An entry in a next-hop list.
        
                  Modules for address families MUST augment this list
                  with a leaf containing a next-hop address of that
                  address family.";
               leaf outgoing-interface {
                 type if:interface-ref;
                 description
                   "Name of the outgoing interface.";
               }
             }
           }
         }
       }
     }
        
     grouping route-metadata {
       description
         "Common route metadata.";
       leaf source-protocol {
         type identityref {
           base routing-protocol;
         }
         mandatory true;
         description
           "Type of the routing protocol from which the route
            originated.";
       }
       leaf active {
         type empty;
         description
           "The presence of this leaf indicates that the route is
            preferred among all routes in the same RIB that have the
            same destination prefix.";
       }
       leaf last-updated {
         type yang:date-and-time;
         description
           "Timestamp of the last modification of the route.  If the
            route was never modified, it is the time when the route was
            inserted into the RIB.";
        
       }
     }
        
     /* Data nodes */
        
     container routing {
       description
         "Configuration parameters for the routing subsystem.";
       uses router-id {
         if-feature "router-id";
         description
           "Support for the global router ID.  Routing protocols
            that use a router ID can use this parameter or override it
            with another value.";
       }
       container interfaces {
         config false;
         description
           "Network-layer interfaces used for routing.";
         leaf-list interface {
           type if:interface-ref;
           description
             "Each entry is a reference to the name of a configured
              network-layer interface.";
         }
       }
       container control-plane-protocols {
         description
           "Support for control-plane protocol instances.";
         list control-plane-protocol {
           key "type name";
           description
             "Each entry contains a control-plane protocol instance.";
           leaf type {
             type identityref {
               base control-plane-protocol;
             }
             description
               "Type of the control-plane protocol -- an identity
                derived from the 'control-plane-protocol'
                base identity.";
           }
           leaf name {
             type string;
             description
               "An arbitrary name of the control-plane protocol
                instance.";
           }
           leaf description {
             type string;
             description
               "Textual description of the control-plane protocol
                instance.";
           }
           container static-routes {
             when "derived-from-or-self(../type, 'rt:static')" {
               description
                 "This container is only valid for the 'static' routing
                  protocol.";
             }
             description
               "Support for the 'static' pseudo-protocol.
        
                Address-family-specific modules augment this node with
                their lists of routes.";
           }
         }
       }
       container ribs {
         description
           "Support for RIBs.";
         list rib {
           key "name";
           description
             "Each entry contains a configuration for a RIB identified
              by the 'name' key.
        
              Entries having the same key as a system-controlled entry
              in the list '/routing/ribs/rib' are used for
              configuring parameters of that entry.  Other entries
              define additional user-controlled RIBs.";
           leaf name {
             type string;
             description
               "The name of the RIB.
        

For system-controlled entries, the value of this leaf must be the same as the name of the corresponding entry in the operational state.

システム制御のエントリの場合、このリーフの値は、動作状態の対応するエントリの名前と同じである必要があります。

                For user-controlled entries, an arbitrary name can be
                used.";
           }
           uses address-family {
             description
               "The address family of the system-controlled RIB.";
        

}

           leaf default-rib {
             if-feature "multiple-ribs";
             type boolean;
             default "true";
             config false;
             description
               "This flag has the value of 'true' if and only if the RIB
                is the default RIB for the given address family.
        
                By default, control-plane protocols place their routes
                in the default RIBs.";
           }
           container routes {
             config false;
             description
               "Current contents of the RIB.";
             list route {
               description
                 "A RIB route entry.  This data node MUST be augmented
                  with information specific to routes of each address
                  family.";
               leaf route-preference {
                 type route-preference;
                 description
                   "This route attribute, also known as 'administrative
                    distance', allows for selecting the preferred route
                    among routes with the same destination prefix.  A
                    smaller value indicates a route that is
                    more preferred.";
               }
               container next-hop {
                 description
                   "Route's next-hop attribute.";
                 uses next-hop-state-content;
               }
               uses route-metadata;
             }
           }
           action active-route {
             description
               "Return the active RIB route that is used for the
                destination address.
        
                Address-family-specific modules MUST augment input
                parameters with a leaf named 'destination-address'.";
             output {
        

container route { description "The active RIB route for the specified destination.

コンテナルート{説明 "指定された宛先のアクティブなRIBルート。

If no route exists in the RIB for the destination address, no output is returned.

宛先アドレスのRIBにルートが存在しない場合、出力は返されません。

                    Address-family-specific modules MUST augment this
                    container with appropriate route contents.";
                 container next-hop {
                   description
                     "Route's next-hop attribute.";
                   uses next-hop-state-content;
                 }
                 uses route-metadata;
               }
             }
           }
           leaf description {
             type string;
             description
               "Textual description of the RIB.";
           }
         }
       }
     }
        
     /*
      * The subsequent data nodes are obviated and obsoleted
      * by the Network Management Datastore Architecture
      * as described in RFC 8342.
      */
     container routing-state {
       config false;
       status obsolete;
       description
         "State data of the routing subsystem.";
       uses router-id {
         status obsolete;
         description
           "Global router ID.
        
            It may be either configured or assigned algorithmically by
            the implementation.";
       }
       container interfaces {
         status obsolete;
         description
        
           "Network-layer interfaces used for routing.";
         leaf-list interface {
           type if:interface-state-ref;
           status obsolete;
           description
             "Each entry is a reference to the name of a configured
              network-layer interface.";
         }
       }
       container control-plane-protocols {
         status obsolete;
         description
           "Container for the list of routing protocol instances.";
         list control-plane-protocol {
           key "type name";
           status obsolete;
           description
             "State data of a control-plane protocol instance.
        
              An implementation MUST provide exactly one
              system-controlled instance of the 'direct'
              pseudo-protocol.  Instances of other control-plane
              protocols MAY be created by configuration.";
           leaf type {
             type identityref {
               base control-plane-protocol;
             }
             status obsolete;
             description
               "Type of the control-plane protocol.";
           }
           leaf name {
             type string;
             status obsolete;
             description
               "The name of the control-plane protocol instance.
        
                For system-controlled instances, this name is
                persistent, i.e., it SHOULD NOT change across
                reboots.";
           }
         }
       }
       container ribs {
         status obsolete;
         description
           "Container for RIBs.";
         list rib {
        
           key "name";
           min-elements 1;
           status obsolete;
           description
             "Each entry represents a RIB identified by the 'name'
              key.  All routes in a RIB MUST belong to the same address
              family.
        
              An implementation SHOULD provide one system-controlled
              default RIB for each supported address family.";
           leaf name {
             type string;
             status obsolete;
             description
               "The name of the RIB.";
           }
           uses address-family {
             status obsolete;
             description
               "The address family of the RIB.";
           }
           leaf default-rib {
             if-feature "multiple-ribs";
             type boolean;
             default "true";
             status obsolete;
             description
               "This flag has the value of 'true' if and only if the
                RIB is the default RIB for the given address family.
        
                By default, control-plane protocols place their routes
                in the default RIBs.";
           }
           container routes {
             status obsolete;
             description
               "Current contents of the RIB.";
             list route {
               status obsolete;
               description
                 "A RIB route entry.  This data node MUST be augmented
                  with information specific to routes of each address
                  family.";
               leaf route-preference {
                 type route-preference;
                 status obsolete;
                 description
                   "This route attribute, also known as 'administrative
        
                    distance', allows for selecting the preferred route
                    among routes with the same destination prefix.  A
                    smaller value indicates a route that is
                    more preferred.";
               }
               container next-hop {
                 status obsolete;
                 description
                   "Route's next-hop attribute.";
                 uses next-hop-state-content {
                   status obsolete;
                   description
                     "Route's next-hop attribute operational state.";
                 }
               }
               uses route-metadata {
                 status obsolete;
                 description
                   "Route metadata.";
               }
             }
           }
           action active-route {
             status obsolete;
             description
               "Return the active RIB route that is used for the
                destination address.
        
                Address-family-specific modules MUST augment input
                parameters with a leaf named 'destination-address'.";
             output {
               container route {
                 status obsolete;
                 description
                   "The active RIB route for the specified
                    destination.
        

If no route exists in the RIB for the destination address, no output is returned.

宛先アドレスのRIBにルートが存在しない場合、出力は返されません。

                    Address-family-specific modules MUST augment this
                    container with appropriate route contents.";
                 container next-hop {
                   status obsolete;
                   description
                     "Route's next-hop attribute.";
                   uses next-hop-state-content {
                     status obsolete;
        
                     description
                       "Active route state data.";
                   }
                 }
                 uses route-metadata {
                   status obsolete;
                   description
                     "Active route metadata.";
                 }
               }
             }
           }
         }
       }
     }
   }
        

<CODE ENDS>

<コード終了>

8. IPv4 Unicast Routing Management YANG Module
8. IPv4ユニキャストルーティング管理YANGモジュール
   <CODE BEGINS> file "ietf-ipv4-unicast-routing@2018-03-13.yang"
        
   module ietf-ipv4-unicast-routing {
     yang-version "1.1";
     namespace
       "urn:ietf:params:xml:ns:yang:ietf-ipv4-unicast-routing";
     prefix "v4ur";
        
     import ietf-routing {
       prefix "rt";
       description
         "An 'ietf-routing' module version that is compatible with
          the Network Management Datastore Architecture (NMDA)
          is required.";
     }
        
     import ietf-inet-types {
       prefix "inet";
     }
     organization
       "IETF NETMOD (Network Modeling) Working Group";
     contact
       "WG Web:   <https://datatracker.ietf.org/wg/netmod/>
        WG List:  <mailto:rtgwg@ietf.org>
        
        Editor:   Ladislav Lhotka
                  <mailto:lhotka@nic.cz>
                  Acee Lindem
                  <mailto:acee@cisco.com>
                  Yingzhen Qu
                  <mailto:yingzhen.qu@huawei.com>";
        

description "This YANG module augments the 'ietf-routing' module with basic parameters for IPv4 unicast routing. The model fully conforms to the Network Management Datastore Architecture (NMDA).

説明「このYANGモジュールは、IPv4ユニキャストルーティングの基本的なパラメータで「ietf-routing」モジュールを補強します。モデルは、ネットワーク管理データストアアーキテクチャ(NMDA)に完全に準拠しています。

Copyright (c) 2018 IETF Trust and the persons identified as authors of the code. All rights reserved.

Copyright(c)2018 IETF Trustおよびコードの作成者として識別された人物。全著作権所有。

Redistribution and use in source and binary forms, with or without modification, is permitted pursuant to, and subject to the license terms contained in, the Simplified BSD License set forth in Section 4.c of the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info).

ソースおよびバイナリ形式での再配布および使用は、変更の有無にかかわらず、IETF文書に関連するIETFトラストの法的規定のセクション4.cに記載されているSimplified BSD Licenseに従い、それに含まれるライセンス条項に従って許可されます( https://trustee.ietf.org/license-info)。

This version of this YANG module is part of RFC 8349; see the RFC itself for full legal notices.";

このYANGモジュールのこのバージョンはRFC 8349の一部です。完全な法的通知については、RFC自体を参照してください。 ";

     revision 2018-03-13 {
       description
         "Network Management Datastore Architecture (NMDA) revision.";
       reference
         "RFC 8349: A YANG Data Model for Routing Management
                    (NMDA Version)";
     }
        
     revision 2016-11-04 {
          description
            "Initial revision.";
          reference
            "RFC 8022: A YANG Data Model for Routing Management";
     }
        
     /* Identities */
        
     identity ipv4-unicast {
       base rt:ipv4;
       description
         "This identity represents the IPv4 unicast address family.";
     }
        
     augment "/rt:routing/rt:ribs/rt:rib/rt:routes/rt:route" {
       when "derived-from-or-self(../../rt:address-family, "
        
          + "'v4ur:ipv4-unicast')" {
         description
           "This augment is valid only for IPv4 unicast.";
       }
       description
         "This leaf augments an IPv4 unicast route.";
       leaf destination-prefix {
         type inet:ipv4-prefix;
         description
           "IPv4 destination prefix.";
       }
     }
        
     augment "/rt:routing/rt:ribs/rt:rib/rt:routes/rt:route/"
           + "rt:next-hop/rt:next-hop-options/rt:simple-next-hop" {
       when "derived-from-or-self(../../../rt:address-family, "
          + "'v4ur:ipv4-unicast')" {
         description
           "This augment is valid only for IPv4 unicast.";
       }
       description
         "Augments the 'simple-next-hop' case in IPv4 unicast routes.";
       leaf next-hop-address {
         type inet:ipv4-address;
         description
           "IPv4 address of the next hop.";
       }
     }
        
     augment "/rt:routing/rt:ribs/rt:rib/rt:routes/rt:route/"
           + "rt:next-hop/rt:next-hop-options/rt:next-hop-list/"
           + "rt:next-hop-list/rt:next-hop" {
       when "derived-from-or-self(../../../../../rt:address-family, "
          + "'v4ur:ipv4-unicast')" {
         description
           "This augment is valid only for IPv4 unicast.";
       }
       description
         "This leaf augments the 'next-hop-list' case of IPv4 unicast
          routes.";
       leaf address {
         type inet:ipv4-address;
         description
           "IPv4 address of the next hop.";
       }
     }
        

augment

増強

       "/rt:routing/rt:ribs/rt:rib/rt:active-route/rt:input" {
       when "derived-from-or-self(../rt:address-family, "
          + "'v4ur:ipv4-unicast')" {
         description
           "This augment is valid only for IPv4 unicast RIBs.";
       }
       description
         "This augment adds the input parameter of the 'active-route'
          action.";
       leaf destination-address {
         type inet:ipv4-address;
         description
           "IPv4 destination address.";
       }
     }
        
     augment "/rt:routing/rt:ribs/rt:rib/rt:active-route/"
           + "rt:output/rt:route" {
       when "derived-from-or-self(../../rt:address-family, "
          + "'v4ur:ipv4-unicast')" {
         description
           "This augment is valid only for IPv4 unicast.";
       }
       description
         "This augment adds the destination prefix to the reply of the
          'active-route' action.";
       leaf destination-prefix {
         type inet:ipv4-prefix;
         description
           "IPv4 destination prefix.";
       }
     }
        
     augment "/rt:routing/rt:ribs/rt:rib/rt:active-route/"
           + "rt:output/rt:route/rt:next-hop/rt:next-hop-options/"
           + "rt:simple-next-hop" {
       when "derived-from-or-self(../../../rt:address-family, "
          + "'v4ur:ipv4-unicast')" {
         description
           "This augment is valid only for IPv4 unicast.";
       }
       description
         "Augments the 'simple-next-hop' case in the reply to the
          'active-route' action.";
       leaf next-hop-address {
         type inet:ipv4-address;
         description
           "IPv4 address of the next hop.";
        
       }
     }
        
     augment "/rt:routing/rt:ribs/rt:rib/rt:active-route/"
           + "rt:output/rt:route/rt:next-hop/rt:next-hop-options/"
           + "rt:next-hop-list/rt:next-hop-list/rt:next-hop" {
       when "derived-from-or-self(../../../../../rt:address-family, "
          + "'v4ur:ipv4-unicast')" {
         description
           "This augment is valid only for IPv4 unicast.";
       }
       description
         "Augments the 'next-hop-list' case in the reply to the
          'active-route' action.";
       leaf next-hop-address {
         type inet:ipv4-address;
         description
           "IPv4 address of the next hop.";
       }
     }
        
     augment "/rt:routing/rt:control-plane-protocols/"
           + "rt:control-plane-protocol/rt:static-routes" {
       description
         "This augment defines the 'static' pseudo-protocol
          with data specific to IPv4 unicast.";
       container ipv4 {
         description
           "Support for a 'static' pseudo-protocol instance
            consists of a list of routes.";
         list route {
           key "destination-prefix";
           description
             "A list of static routes.";
           leaf destination-prefix {
             type inet:ipv4-prefix;
             mandatory true;
             description
               "IPv4 destination prefix.";
           }
           leaf description {
             type string;
             description
               "Textual description of the route.";
           }
           container next-hop {
             description
               "Support for next-hop.";
        
             uses rt:next-hop-content {
               augment "next-hop-options/simple-next-hop" {
                 description
                   "Augments the 'simple-next-hop' case in IPv4 static
                    routes.";
                 leaf next-hop-address {
                   type inet:ipv4-address;
                   description
                     "IPv4 address of the next hop.";
                 }
               }
               augment "next-hop-options/next-hop-list/next-hop-list/"
                     + "next-hop" {
                 description
                   "Augments the 'next-hop-list' case in IPv4 static
                    routes.";
                 leaf next-hop-address {
                   type inet:ipv4-address;
                   description
                     "IPv4 address of the next hop.";
                 }
               }
             }
           }
         }
       }
     }
        
     /*
      * The subsequent data nodes are obviated and obsoleted
      * by the Network Management Datastore Architecture
      * as described in RFC 8342.
      */
     augment "/rt:routing-state/rt:ribs/rt:rib/rt:routes/rt:route" {
       when "derived-from-or-self(../../rt:address-family, "
            + "'v4ur:ipv4-unicast')" {
         description
           "This augment is valid only for IPv4 unicast.";
       }
       status obsolete;
       description
         "This leaf augments an IPv4 unicast route.";
       leaf destination-prefix {
         type inet:ipv4-prefix;
         status obsolete;
         description
           "IPv4 destination prefix.";
       }
        
     }
     augment "/rt:routing-state/rt:ribs/rt:rib/rt:routes/rt:route/"
             + "rt:next-hop/rt:next-hop-options/rt:simple-next-hop" {
       when "derived-from-or-self(
               ../../../rt:address-family, 'v4ur:ipv4-unicast')" {
         description
           "This augment is valid only for IPv4 unicast.";
       }
       status obsolete;
       description
         "Augments the 'simple-next-hop' case in IPv4 unicast routes.";
       leaf next-hop-address {
         type inet:ipv4-address;
         status obsolete;
         description
           "IPv4 address of the next hop.";
       }
     }
     augment "/rt:routing-state/rt:ribs/rt:rib/rt:routes/rt:route/"
             + "rt:next-hop/rt:next-hop-options/rt:next-hop-list/"
             + "rt:next-hop-list/rt:next-hop" {
       when "derived-from-or-self(../../../../../rt:address-family,
               'v4ur:ipv4-unicast')" {
         description
           "This augment is valid only for IPv4 unicast.";
       }
       status obsolete;
       description
         "This leaf augments the 'next-hop-list' case of IPv4 unicast
          routes.";
       leaf address {
         type inet:ipv4-address;
         status obsolete;
         description
           "IPv4 address of the next hop.";
       }
     }
     augment "/rt:routing-state/rt:ribs/rt:rib/rt:active-route/"
             + "rt:input" {
       when "derived-from-or-self(../rt:address-family,
               'v4ur:ipv4-unicast')" {
         description
           "This augment is valid only for IPv4 unicast RIBs.";
       }
       status obsolete;
       description
         "This augment adds the input parameter of the 'active-route'
          action.";
        
       leaf destination-address {
         type inet:ipv4-address;
         status obsolete;
         description
           "IPv4 destination address.";
       }
     }
     augment "/rt:routing-state/rt:ribs/rt:rib/rt:active-route/"
             + "rt:output/rt:route" {
       when "derived-from-or-self(../../rt:address-family,
               'v4ur:ipv4-unicast')" {
         description
           "This augment is valid only for IPv4 unicast.";
       }
       status obsolete;
       description
         "This augment adds the destination prefix to the reply of the
          'active-route' action.";
       leaf destination-prefix {
         type inet:ipv4-prefix;
         status obsolete;
         description
           "IPv4 destination prefix.";
       }
     }
     augment "/rt:routing-state/rt:ribs/rt:rib/rt:active-route/"
             + "rt:output/rt:route/rt:next-hop/rt:next-hop-options/"
             + "rt:simple-next-hop" {
       when "derived-from-or-self(../../../rt:address-family,
               'v4ur:ipv4-unicast')" {
         description
           "This augment is valid only for IPv4 unicast.";
       }
       status obsolete;
       description
         "Augments the 'simple-next-hop' case in the reply to the
          'active-route' action.";
       leaf next-hop-address {
         type inet:ipv4-address;
         status obsolete;
         description
           "IPv4 address of the next hop.";
       }
     }
     augment "/rt:routing-state/rt:ribs/rt:rib/rt:active-route/"
             + "rt:output/rt:route/rt:next-hop/rt:next-hop-options/"
             + "rt:next-hop-list/rt:next-hop-list/rt:next-hop" {
       when "derived-from-or-self(../../../../../rt:address-family,
        
               'v4ur:ipv4-unicast')" {
         description
           "This augment is valid only for IPv4 unicast.";
       }
       status obsolete;
       description
         "Augments the 'next-hop-list' case in the reply to the
          'active-route' action.";
       leaf next-hop-address {
         type inet:ipv4-address;
         status obsolete;
         description
           "IPv4 address of the next hop.";
       }
     }
   }
        

<CODE ENDS>

<コード終了>

9. IPv6 Unicast Routing Management YANG Module
9. IPv6ユニキャストルーティング管理YANGモジュール
   <CODE BEGINS> file "ietf-ipv6-unicast-routing@2018-03-13.yang"
        
   module ietf-ipv6-unicast-routing {
     yang-version "1.1";
     namespace
       "urn:ietf:params:xml:ns:yang:ietf-ipv6-unicast-routing";
     prefix "v6ur";
        
     import ietf-routing {
       prefix "rt";
       description
         "An 'ietf-routing' module version that is compatible with
          the Network Management Datastore Architecture (NMDA)
          is required.";
     }
        
     import ietf-inet-types {
       prefix "inet";
       description
         "An 'ietf-interfaces' module version that is compatible with
          the Network Management Datastore Architecture (NMDA)
          is required.";
     }
        
     include ietf-ipv6-router-advertisements {
       revision-date 2018-03-13;
     }
     organization
       "IETF NETMOD (Network Modeling) Working Group";
     contact
       "WG Web:   <https://datatracker.ietf.org/wg/netmod/>
        WG List:  <mailto:rtgwg@ietf.org>
        
        Editor:   Ladislav Lhotka
                  <mailto:lhotka@nic.cz>
                  Acee Lindem
                  <mailto:acee@cisco.com>
                  Yingzhen Qu
                  <mailto:yingzhen.qu@huawei.com>";
        

description "This YANG module augments the 'ietf-routing' module with basic parameters for IPv6 unicast routing. The model fully conforms to the Network Management Datastore Architecture (NMDA).

説明「このYANGモジュールは、IPv6ユニキャストルーティングの基本的なパラメータで「ietf-routing」モジュールを補強します。モデルは、ネットワーク管理データストアアーキテクチャ(NMDA)に完全に準拠しています。

Copyright (c) 2018 IETF Trust and the persons identified as authors of the code. All rights reserved.

Copyright(c)2018 IETF Trustおよびコードの作成者として識別された人物。全著作権所有。

Redistribution and use in source and binary forms, with or without modification, is permitted pursuant to, and subject to the license terms contained in, the Simplified BSD License set forth in Section 4.c of the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info).

ソースおよびバイナリ形式での再配布および使用は、変更の有無にかかわらず、IETF文書に関連するIETFトラストの法的規定のセクション4.cに記載されているSimplified BSD Licenseに従い、それに含まれるライセンス条項に従って許可されます( https://trustee.ietf.org/license-info)。

This version of this YANG module is part of RFC 8349; see the RFC itself for full legal notices.";

このYANGモジュールのこのバージョンはRFC 8349の一部です。完全な法的通知については、RFC自体を参照してください。 ";

     revision 2018-03-13 {
       description
         "Network Management Datastore Architecture (NMDA) revision.";
       reference
         "RFC 8349: A YANG Data Model for Routing Management
                    (NMDA Version)";
     }
        
     /* Identities */
        
     revision 2016-11-04 {
          description
            "Initial revision.";
          reference
            "RFC 8022: A YANG Data Model for Routing Management";
     }
     identity ipv6-unicast {
       base rt:ipv6;
       description
         "This identity represents the IPv6 unicast address family.";
     }
        
     augment "/rt:routing/rt:ribs/rt:rib/rt:routes/rt:route" {
       when "derived-from-or-self(../../rt:address-family, "
          + "'v6ur:ipv6-unicast')" {
         description
           "This augment is valid only for IPv6 unicast.";
       }
       description
         "This leaf augments an IPv6 unicast route.";
       leaf destination-prefix {
         type inet:ipv6-prefix;
         description
           "IPv6 destination prefix.";
       }
     }
        
     augment "/rt:routing/rt:ribs/rt:rib/rt:routes/rt:route/"
           + "rt:next-hop/rt:next-hop-options/rt:simple-next-hop" {
       when "derived-from-or-self(../../../rt:address-family, "
          + "'v6ur:ipv6-unicast')" {
         description
           "This augment is valid only for IPv6 unicast.";
       }
       description
         "Augments the 'simple-next-hop' case in IPv6 unicast routes.";
       leaf next-hop-address {
         type inet:ipv6-address;
         description
           "IPv6 address of the next hop.";
       }
     }
        
     augment "/rt:routing/rt:ribs/rt:rib/rt:routes/rt:route/"
           + "rt:next-hop/rt:next-hop-options/rt:next-hop-list/"
           + "rt:next-hop-list/rt:next-hop" {
       when "derived-from-or-self(../../../../../rt:address-family, "
          + "'v6ur:ipv6-unicast')" {
         description
           "This augment is valid only for IPv6 unicast.";
       }
       description
         "This leaf augments the 'next-hop-list' case of IPv6 unicast
          routes.";
        
       leaf address {
         type inet:ipv6-address;
         description
           "IPv6 address of the next hop.";
       }
     }
        
     augment
       "/rt:routing/rt:ribs/rt:rib/rt:active-route/rt:input" {
       when "derived-from-or-self(../rt:address-family, "
          + "'v6ur:ipv6-unicast')" {
         description
           "This augment is valid only for IPv6 unicast RIBs.";
       }
       description
         "This augment adds the input parameter of the 'active-route'
          action.";
       leaf destination-address {
         type inet:ipv6-address;
         description
           "IPv6 destination address.";
       }
     }
        
     augment "/rt:routing/rt:ribs/rt:rib/rt:active-route/"
           + "rt:output/rt:route" {
       when "derived-from-or-self(../../rt:address-family, "
          + "'v6ur:ipv6-unicast')" {
         description
           "This augment is valid only for IPv6 unicast.";
       }
       description
         "This augment adds the destination prefix to the reply of the
          'active-route' action.";
       leaf destination-prefix {
         type inet:ipv6-prefix;
         description
           "IPv6 destination prefix.";
       }
     }
        
     augment "/rt:routing/rt:ribs/rt:rib/rt:active-route/"
           + "rt:output/rt:route/rt:next-hop/rt:next-hop-options/"
           + "rt:simple-next-hop" {
       when "derived-from-or-self(../../../rt:address-family, "
          + "'v6ur:ipv6-unicast')" {
         description
           "This augment is valid only for IPv6 unicast.";
        
       }
       description
         "Augments the 'simple-next-hop' case in the reply to the
          'active-route' action.";
       leaf next-hop-address {
         type inet:ipv6-address;
         description
           "IPv6 address of the next hop.";
       }
     }
        
     augment "/rt:routing/rt:ribs/rt:rib/rt:active-route/"
           + "rt:output/rt:route/rt:next-hop/rt:next-hop-options/"
           + "rt:next-hop-list/rt:next-hop-list/rt:next-hop" {
       when "derived-from-or-self(../../../../../rt:address-family, "
          + "'v6ur:ipv6-unicast')" {
         description
           "This augment is valid only for IPv6 unicast.";
       }
       description
         "Augments the 'next-hop-list' case in the reply to the
          'active-route' action.";
       leaf next-hop-address {
         type inet:ipv6-address;
         description
           "IPv6 address of the next hop.";
       }
     }
        
     /* Data node augmentations */
        
     augment "/rt:routing/rt:control-plane-protocols/"
           + "rt:control-plane-protocol/rt:static-routes" {
       description
         "This augment defines the 'static' pseudo-protocol
          with data specific to IPv6 unicast.";
       container ipv6 {
         description
           "Support for a 'static' pseudo-protocol instance
            consists of a list of routes.";
         list route {
           key "destination-prefix";
           description
             "A list of static routes.";
           leaf destination-prefix {
             type inet:ipv6-prefix;
             mandatory true;
             description
        
               "IPv6 destination prefix.";
           }
           leaf description {
             type string;
             description
               "Textual description of the route.";
           }
           container next-hop {
             description
               "Next hop for the route.";
             uses rt:next-hop-content {
               augment "next-hop-options/simple-next-hop" {
                 description
                   "Augments the 'simple-next-hop' case in IPv6 static
                    routes.";
                 leaf next-hop-address {
                   type inet:ipv6-address;
                   description
                     "IPv6 address of the next hop.";
                 }
               }
               augment "next-hop-options/next-hop-list/next-hop-list/"
                     + "next-hop" {
                 description
                   "Augments the 'next-hop-list' case in IPv6 static
                    routes.";
                 leaf next-hop-address {
                   type inet:ipv6-address;
                   description
                     "IPv6 address of the next hop.";
                 }
               }
             }
           }
         }
       }
     }
        
     /*
      * The subsequent data nodes are obviated and obsoleted
      * by the Network Management Datastore Architecture
      * as described in RFC 8342.
      */
     augment "/rt:routing-state/rt:ribs/rt:rib/rt:routes/rt:route" {
       when "derived-from-or-self(../../rt:address-family,
               'v6ur:ipv6-unicast')" {
         description
           "This augment is valid only for IPv6 unicast.";
        
       }
       status obsolete;
       description
         "This leaf augments an IPv6 unicast route.";
       leaf destination-prefix {
         type inet:ipv6-prefix;
         status obsolete;
         description
           "IPv6 destination prefix.";
       }
     }
     augment "/rt:routing-state/rt:ribs/rt:rib/rt:routes/rt:route/"
             + "rt:next-hop/rt:next-hop-options/rt:simple-next-hop" {
       when "derived-from-or-self(../../../rt:address-family,
               'v6ur:ipv6-unicast')" {
         description
           "This augment is valid only for IPv6 unicast.";
       }
       status obsolete;
       description
         "Augments the 'simple-next-hop' case in IPv6 unicast routes.";
       leaf next-hop-address {
         type inet:ipv6-address;
         status obsolete;
         description
           "IPv6 address of the next hop.";
       }
     }
     augment "/rt:routing-state/rt:ribs/rt:rib/rt:routes/rt:route/"
             + "rt:next-hop/rt:next-hop-options/rt:next-hop-list/"
             + "rt:next-hop-list/rt:next-hop" {
       when "derived-from-or-self(../../../../../rt:address-family,
               'v6ur:ipv6-unicast')" {
         description
           "This augment is valid only for IPv6 unicast.";
       }
       status obsolete;
       description
         "This leaf augments the 'next-hop-list' case of IPv6 unicast
          routes.";
       leaf address {
         type inet:ipv6-address;
         status obsolete;
         description
           "IPv6 address of the next hop.";
       }
     }
     augment "/rt:routing-state/rt:ribs/rt:rib/"
        
             + "rt:active-route/rt:input" {
       when "derived-from-or-self(../rt:address-family,
               'v6ur:ipv6-unicast')" {
         description
           "This augment is valid only for IPv6 unicast RIBs.";
       }
       status obsolete;
       description
         "This augment adds the input parameter of the 'active-route'
          action.";
       leaf destination-address {
         type inet:ipv6-address;
         status obsolete;
         description
           "IPv6 destination address.";
       }
     }
     augment "/rt:routing-state/rt:ribs/rt:rib/rt:active-route/"
             + "rt:output/rt:route" {
       when "derived-from-or-self(../../rt:address-family,
               'v6ur:ipv6-unicast')" {
         description
           "This augment is valid only for IPv6 unicast.";
       }
       status obsolete;
       description
         "This augment adds the destination prefix to the reply of the
          'active-route' action.";
       leaf destination-prefix {
         type inet:ipv6-prefix;
         status obsolete;
         description
           "IPv6 destination prefix.";
       }
     }
     augment "/rt:routing-state/rt:ribs/rt:rib/rt:active-route/"
             + "rt:output/rt:route/rt:next-hop/rt:next-hop-options/"
             + "rt:simple-next-hop" {
       when "derived-from-or-self(../../../rt:address-family,
               'v6ur:ipv6-unicast')" {
         description
           "This augment is valid only for IPv6 unicast.";
       }
       status obsolete;
       description
         "Augments the 'simple-next-hop' case in the reply to the
          'active-route' action.";
       leaf next-hop-address {
        
         type inet:ipv6-address;
         status obsolete;
         description
           "IPv6 address of the next hop.";
       }
     }
     augment "/rt:routing-state/rt:ribs/rt:rib/rt:active-route/"
             + "rt:output/rt:route/rt:next-hop/rt:next-hop-options/"
             + "rt:next-hop-list/rt:next-hop-list/rt:next-hop" {
       when "derived-from-or-self(../../../../../rt:address-family,
               'v6ur:ipv6-unicast')" {
         description
           "This augment is valid only for IPv6 unicast.";
       }
       status obsolete;
       description
         "Augments the 'next-hop-list' case in the reply to the
          'active-route' action.";
       leaf next-hop-address {
         type inet:ipv6-address;
         status obsolete;
         description
           "IPv6 address of the next hop.";
       }
     }
   }
        

<CODE ENDS>

<コード終了>

9.1. IPv6 Router Advertisements Submodule
9.1. IPv6ルーターアドバタイズサブモジュール
   <CODE BEGINS> file "ietf-ipv6-router-advertisements@2018-03-13.yang"
        
   submodule ietf-ipv6-router-advertisements {
     yang-version "1.1";
        
     belongs-to ietf-ipv6-unicast-routing {
       prefix "v6ur";
     }
        
     import ietf-inet-types {
       prefix "inet";
     }
        
     import ietf-interfaces {
       prefix "if";
       description
         "An 'ietf-interfaces' module version that is compatible with
        
          the Network Management Datastore Architecture (NMDA)
          is required.";
     }
        
     import ietf-ip {
       prefix "ip";
       description
         "An 'ietf-ip' module version that is compatible with
          the Network Management Datastore Architecture (NMDA)
          is required.";
     }
        
     organization
       "IETF NETMOD (Network Modeling) Working Group";
     contact
       "WG Web:   <https://datatracker.ietf.org/wg/netmod/>
        WG List:  <mailto:rtgwg@ietf.org>
        
        Editor:   Ladislav Lhotka
                  <mailto:lhotka@nic.cz>
                  Acee Lindem
                  <mailto:acee@cisco.com>
                  Yingzhen Qu
                  <mailto:yingzhen.qu@huawei.com>";
        

description "This YANG module augments the 'ietf-ip' module with parameters for IPv6 Router Advertisements. The model fully conforms to the Network Management Datastore Architecture (NMDA).

説明「このYANGモジュールは、IPv6ルーターアドバタイズメントのパラメーターで「ietf-ip」モジュールを拡張します。モデルは、ネットワーク管理データストアアーキテクチャ(NMDA)に完全に準拠しています。

Copyright (c) 2018 IETF Trust and the persons identified as authors of the code. All rights reserved.

Copyright(c)2018 IETF Trustおよびコードの作成者として識別された人物。全著作権所有。

Redistribution and use in source and binary forms, with or without modification, is permitted pursuant to, and subject to the license terms contained in, the Simplified BSD License set forth in Section 4.c of the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info).

ソースおよびバイナリ形式での再配布および使用は、変更の有無にかかわらず、IETF文書に関連するIETFトラストの法的規定のセクション4.cに記載されているSimplified BSD Licenseに従い、それに含まれるライセンス条項に従って許可されます( https://trustee.ietf.org/license-info)。

This version of this YANG module is part of RFC 8349; see the RFC itself for full legal notices.";

このYANGモジュールのこのバージョンはRFC 8349の一部です。完全な法的通知については、RFC自体を参照してください。 ";

reference "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)";

「RFC 4861:IPバージョン6(IPv6)の近隣探索」を参照してください。

revision 2018-03-13 {

改訂2018-03-13 {

       description
         "Network Management Datastore Architecture (NMDA) revision.";
       reference
         "RFC 8349: A YANG Data Model for Routing Management
                    (NMDA Version)";
     }
        
     revision 2016-11-04 {
          description
            "Initial revision.";
          reference
            "RFC 8022: A YANG Data Model for Routing Management";
     }
        
     augment "/if:interfaces/if:interface/ip:ipv6" {
       description
         "Augments interface configuration with parameters of IPv6
          Router Advertisements.";
       container ipv6-router-advertisements {
         description
           "Support for IPv6 Router Advertisements.";
         leaf send-advertisements {
           type boolean;
           default "false";
           description
             "A flag indicating whether or not the router sends
              periodic Router Advertisements and responds to
              Router Solicitations.";
           reference
             "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)
                        - AdvSendAdvertisements";
         }
         leaf max-rtr-adv-interval {
           type uint16 {
             range "4..65535";
           }
           units "seconds";
           default "600";
           description
             "The maximum time allowed between sending unsolicited
              multicast Router Advertisements from the interface.";
           reference
             "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)
                        - MaxRtrAdvInterval";
         }
         leaf min-rtr-adv-interval {
           type uint16 {
             range "3..1350";
        
           }
           units "seconds";
           must ". <= 0.75 * ../max-rtr-adv-interval" {
             description
               "The value MUST NOT be greater than 75% of
                'max-rtr-adv-interval'.";
           }
           description
             "The minimum time allowed between sending unsolicited
              multicast Router Advertisements from the interface.
        

The default value to be used operationally if this leaf is not configured is determined as follows:

このリーフが構成されていない場合に運用で使用されるデフォルト値は、次のように決定されます。

- if max-rtr-adv-interval >= 9 seconds, the default value is 0.33 * max-rtr-adv-interval;

- max-rtr-adv-interval> = 9秒の場合、デフォルト値は0.33 * max-rtr-adv-intervalです。

              - otherwise, it is 0.75 * max-rtr-adv-interval.";
           reference
             "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)
                        - MinRtrAdvInterval";
         }
         leaf managed-flag {
           type boolean;
           default "false";
           description
             "The value to be placed in the 'Managed address
              configuration' flag field in the Router
              Advertisement.";
           reference
             "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)
                        - AdvManagedFlag";
         }
         leaf other-config-flag {
           type boolean;
           default "false";
           description
             "The value to be placed in the 'Other configuration'
              flag field in the Router Advertisement.";
           reference
             "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)
                        - AdvOtherConfigFlag";
         }
         leaf link-mtu {
           type uint32;
           default "0";
           description
             "The value to be placed in MTU options sent by the
        
              router.  A value of zero indicates that no MTU options
              are sent.";
           reference
             "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)
                        - AdvLinkMTU";
         }
         leaf reachable-time {
           type uint32 {
             range "0..3600000";
           }
           units "milliseconds";
           default "0";
           description
             "The value to be placed in the Reachable Time field in
              the Router Advertisement messages sent by the router.
              A value of zero means unspecified (by this router).";
           reference
             "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)
                        - AdvReachableTime";
         }
         leaf retrans-timer {
           type uint32;
           units "milliseconds";
           default "0";
           description
             "The value to be placed in the Retrans Timer field in
              the Router Advertisement messages sent by the router.
              A value of zero means unspecified (by this router).";
           reference
             "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)
                        - AdvRetransTimer";
         }
         leaf cur-hop-limit {
           type uint8;
           description
             "The value to be placed in the Cur Hop Limit field in
              the Router Advertisement messages sent by the router.
              A value of zero means unspecified (by this router).
        

If this parameter is not configured, the device SHOULD use the IANA-specified value for the default IPv4 Time to Live (TTL) parameter that was in effect at the time of implementation."; reference "RFC 3232: Assigned Numbers: RFC 1700 is Replaced by an On-line Database RFC 4861: Neighbor Discovery for IP version 6 (IPv6) - AdvCurHopLimit

このパラメーターが構成されていない場合、デバイスは、実装時に有効だったデフォルトのIPv4存続時間(TTL)パラメーターにIANAで指定された値を使用する必要があります。オンラインデータベースRFC 4861に置き換えられました:IPバージョン6(IPv6)の近隣探索-AdvCurHopLimit

              IANA: IP Parameters
                    (https://www.iana.org/assignments/ip-parameters)";
         }
         leaf default-lifetime {
           type uint16 {
             range "0..65535";
           }
           units "seconds";
           description
             "The value to be placed in the Router Lifetime field of
              Router Advertisements sent from the interface, in
              seconds.  It MUST be either zero or between
              max-rtr-adv-interval and 9000 seconds.  A value of zero
              indicates that the router is not to be used as a
              default router.  These limits may be overridden by
              specific documents that describe how IPv6 operates over
              different link layers.
        
              If this parameter is not configured, the device SHOULD
              use a value of 3 * max-rtr-adv-interval.";
           reference
             "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)
                        - AdvDefaultLifetime";
         }
         container prefix-list {
           description
             "Support for prefixes to be placed in Prefix
              Information options in Router Advertisement messages
              sent from the interface.
        

Prefixes that are advertised by default but do not have their entries in the child 'prefix' list are advertised with the default values of all parameters.

デフォルトでアドバタイズされているが、子の「プレフィックス」リストにエントリがないプレフィックスは、すべてのパラメータのデフォルト値でアドバタイズされます。

              The link-local prefix SHOULD NOT be included in the
              list of advertised prefixes.";
           reference
             "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)
                        - AdvPrefixList";
           list prefix {
             key "prefix-spec";
             description
               "Support for an advertised prefix entry.";
             leaf prefix-spec {
               type inet:ipv6-prefix;
               description
                 "IPv6 address prefix.";
             }
             choice control-adv-prefixes {
               default "advertise";
               description
                 "Either (1) the prefix is explicitly removed from the
                  set of advertised prefixes or (2) the parameters with
                  which the prefix is advertised are specified (default
                  case).";
               leaf no-advertise {
                 type empty;
                 description
                   "The prefix will not be advertised.
        
                    This can be used for removing the prefix from
                    the default set of advertised prefixes.";
               }
               case advertise {
                 leaf valid-lifetime {
                   type uint32;
                   units "seconds";
                   default "2592000";
                   description
                     "The value to be placed in the Valid Lifetime
                      in the Prefix Information option.  The
                      designated value of all 1's (0xffffffff)
                       represents infinity.";
                   reference
                     "RFC 4861: Neighbor Discovery for IP version 6
                                (IPv6) - AdvValidLifetime";
                 }
                 leaf on-link-flag {
                   type boolean;
                   default "true";
                   description
                     "The value to be placed in the on-link flag
                      ('L-bit') field in the Prefix Information
                      option.";
                   reference
                     "RFC 4861: Neighbor Discovery for IP version 6
                                (IPv6) - AdvOnLinkFlag";
                 }
                 leaf preferred-lifetime {
                   type uint32;
                   units "seconds";
                   must ". <= ../valid-lifetime" {
                     description
                       "This value MUST NOT be greater than
                        valid-lifetime.";
                   }
                   default "604800";
                   description
                     "The value to be placed in the Preferred
                      Lifetime in the Prefix Information option.
                      The designated value of all 1's (0xffffffff)
                      represents infinity.";
                   reference
                     "RFC 4861: Neighbor Discovery for IP version 6
                                (IPv6) - AdvPreferredLifetime";
                 }
                 leaf autonomous-flag {
                   type boolean;
                   default "true";
                   description
                     "The value to be placed in the Autonomous Flag
                      field in the Prefix Information option.";
                   reference
                     "RFC 4861: Neighbor Discovery for IP version 6
                                (IPv6) - AdvAutonomousFlag";
                 }
               }
             }
           }
         }
       }
     }
        
     /*
      * The subsequent data nodes are obviated and obsoleted
      * by the Network Management Datastore Architecture
      * as described in RFC 8342.
      */
     augment "/if:interfaces-state/if:interface/ip:ipv6" {
       status obsolete;
       description
         "Augments interface state data with parameters of IPv6
          Router Advertisements.";
       container ipv6-router-advertisements {
         status obsolete;
         description
           "Parameters of IPv6 Router Advertisements.";
         leaf send-advertisements {
           type boolean;
           status obsolete;
           description
             "A flag indicating whether or not the router sends
              periodic Router Advertisements and responds to
              Router Solicitations.";
        
         }
         leaf max-rtr-adv-interval {
           type uint16 {
             range "4..1800";
           }
           units "seconds";
           status obsolete;
           description
             "The maximum time allowed between sending unsolicited
              multicast Router Advertisements from the interface.";
         }
         leaf min-rtr-adv-interval {
           type uint16 {
             range "3..1350";
           }
           units "seconds";
           status obsolete;
           description
             "The minimum time allowed between sending unsolicited
              multicast Router Advertisements from the interface.";
         }
         leaf managed-flag {
           type boolean;
           status obsolete;
           description
             "The value that is placed in the 'Managed address
              configuration' flag field in the Router Advertisement.";
         }
         leaf other-config-flag {
           type boolean;
           status obsolete;
           description
             "The value that is placed in the 'Other configuration' flag
              field in the Router Advertisement.";
         }
         leaf link-mtu {
           type uint32;
           status obsolete;
           description
             "The value that is placed in MTU options sent by the
              router.  A value of zero indicates that no MTU options
              are sent.";
         }
         leaf reachable-time {
           type uint32 {
             range "0..3600000";
           }
           units "milliseconds";
        
           status obsolete;
           description
             "The value that is placed in the Reachable Time field in
              the Router Advertisement messages sent by the router.  A
              value of zero means unspecified (by this router).";
         }
         leaf retrans-timer {
           type uint32;
           units "milliseconds";
           status obsolete;
           description
             "The value that is placed in the Retrans Timer field in the
              Router Advertisement messages sent by the router.  A value
              of zero means unspecified (by this router).";
         }
         leaf cur-hop-limit {
           type uint8;
           status obsolete;
           description
             "The value that is placed in the Cur Hop Limit field in the
              Router Advertisement messages sent by the router.  A value
              of zero means unspecified (by this router).";
         }
         leaf default-lifetime {
           type uint16 {
             range "0..9000";
           }
           units "seconds";
           status obsolete;
           description
             "The value that is placed in the Router Lifetime field of
              Router Advertisements sent from the interface, in seconds.
              A value of zero indicates that the router is not to be
              used as a default router.";
         }
         container prefix-list {
           status obsolete;
           description
             "A list of prefixes that are placed in Prefix Information
              options in Router Advertisement messages sent from the
              interface.
        
              By default, these are all prefixes that the router
              advertises via routing protocols as being on-link for the
              interface from which the advertisement is sent.";
           list prefix {
             key "prefix-spec";
             status obsolete;
        
             description
               "Advertised prefix entry and its parameters.";
             leaf prefix-spec {
               type inet:ipv6-prefix;
               status obsolete;
               description
                 "IPv6 address prefix.";
             }
             leaf valid-lifetime {
               type uint32;
               units "seconds";
               status obsolete;
               description
                 "The value that is placed in the Valid Lifetime in the
                  Prefix Information option.  The designated value of
                  all 1's (0xffffffff) represents infinity.
        
                  An implementation SHOULD keep this value constant in
                  consecutive advertisements, except when it is
                  explicitly changed in configuration.";
             }
             leaf on-link-flag {
               type boolean;
               status obsolete;
               description
                 "The value that is placed in the on-link flag ('L-bit')
                  field in the Prefix Information option.";
             }
             leaf preferred-lifetime {
               type uint32;
               units "seconds";
               status obsolete;
               description
                 "The value that is placed in the Preferred Lifetime in
                  the Prefix Information option, in seconds.  The
                  designated value of all 1's (0xffffffff) represents
                  infinity.
        
                  An implementation SHOULD keep this value constant in
                  consecutive advertisements, except when it is
                  explicitly changed in configuration.";
             }
             leaf autonomous-flag {
               type boolean;
               status obsolete;
               description
                 "The value that is placed in the Autonomous Flag field
                  in the Prefix Information option.";
        
             }
           }
         }
       }
     }
   }
        

<CODE ENDS>

<コード終了>

10. IANA Considerations
10. IANAに関する考慮事項

[RFC8022] registered the following namespace URIs in the "IETF XML Registry" [RFC3688]. IANA has updated the references to refer to this document.

[RFC8022]は、「IETF XMLレジストリ」[RFC3688]に以下の名前空間URIを登録しました。 IANAは、このドキュメントを参照するように参照を更新しました。

URI: urn:ietf:params:xml:ns:yang:ietf-routing Registrant Contact: The IESG. XML: N/A; the requested URI is an XML namespace.

URI:urn:ietf:params:xml:ns:yang:ietf-routing登録者の連絡先:IESG。 XML:なし。要求されたURIはXML名前空間です。

URI: urn:ietf:params:xml:ns:yang:ietf-ipv4-unicast-routing Registrant Contact: The IESG. XML: N/A; the requested URI is an XML namespace.

URI:urn:ietf:params:xml:ns:yang:ietf-ipv4-unicast-routing登録者の連絡先:IESG。 XML:なし。要求されたURIはXML名前空間です。

URI: urn:ietf:params:xml:ns:yang:ietf-ipv6-unicast-routing Registrant Contact: The IESG. XML: N/A; the requested URI is an XML namespace.

URI:urn:ietf:params:xml:ns:yang:ietf-ipv6-unicast-routing登録者の連絡先:IESG。 XML:なし。要求されたURIはXML名前空間です。

[RFC8022] registered the following YANG modules in the "YANG Module Names" registry [RFC6020]. IANA has updated (1) the modules per this document and (2) the references to refer to this document.

[RFC8022]は、「YANG Module Names」レジストリ[RFC6020]に以下のYANGモジュールを登録しました。 IANAは、(1)このドキュメントごとのモジュール、および(2)このドキュメントを参照するための参照を更新しました。

   Name:      ietf-routing
   Namespace: urn:ietf:params:xml:ns:yang:ietf-routing
   Prefix:    rt
   Reference: RFC 8349
        
   Name:      ietf-ipv4-unicast-routing
   Namespace: urn:ietf:params:xml:ns:yang:ietf-ipv4-unicast-routing
   Prefix:    v4ur
   Reference: RFC 8349
        

Name: ietf-ipv6-unicast-routing Namespace: urn:ietf:params:xml:ns:yang:ietf-ipv6-unicast-routing Prefix: v6ur Reference: RFC 8349 This document registers the following YANG submodule in the "YANG Module Names" registry [RFC6020]:

名前:ietf-ipv6-unicast-routing名前空間:urn:ietf:params:xml:ns:yang:ietf-ipv6-unicast-routingプレフィックス:v6urリファレンス:RFC 8349このドキュメントでは、次のYANGサブモジュールを「YANGモジュール名」に登録しています"レジストリ[RFC6020]:

Name: ietf-ipv6-router-advertisements Module: ietf-ipv6-unicast-routing Reference: RFC 8349

名前:ietf-ipv6-router-advertisementsモジュール:ietf-ipv6-unicast-routingリファレンス:RFC 8349

11. Security Considerations
11. セキュリティに関する考慮事項

The YANG modules specified in this document define a schema for data that is designed to be accessed via network management protocols such as NETCONF [RFC6241] or RESTCONF [RFC8040]. The lowest NETCONF layer is the secure transport layer, and the mandatory-to-implement secure transport is Secure Shell (SSH) [RFC6242]. The lowest RESTCONF layer is HTTPS, and the mandatory-to-implement secure transport is TLS [RFC5246].

このドキュメントで指定されているYANGモジュールは、NETCONF [RFC6241]やRESTCONF [RFC8040]などのネットワーク管理プロトコルを介してアクセスするように設計されたデータのスキーマを定義します。最下位のNETCONFレイヤーはセキュアなトランスポートレイヤーであり、実装に必須のセキュアなトランスポートはセキュアシェル(SSH)です[RFC6242]。最も低いRESTCONF層はHTTPSであり、実装に必須のセキュアなトランスポートはTLS [RFC5246]です。

The NETCONF access control model [RFC8341] provides the means to restrict access for particular NETCONF or RESTCONF users to a preconfigured subset of all available NETCONF or RESTCONF protocol operations and content.

NETCONFアクセス制御モデル[RFC8341]は、特定のNETCONFまたはRESTCONFユーザーのアクセスを、利用可能なすべてのNETCONFまたはRESTCONFプロトコル操作およびコンテンツの事前構成されたサブセットに制限する手段を提供します。

There are a number of data nodes defined in these YANG modules that are writable/creatable/deletable (i.e., config true, which is the default). These data nodes may be considered sensitive or vulnerable in some network environments. Write operations (e.g., edit-config) to these data nodes without proper protection can have a negative effect on network operations. These are the subtrees and data nodes and their sensitivity/vulnerability:

これらのYANGモジュールには、書き込み/作成/削除が可能なデータノードがいくつか定義されています(つまり、config true、デフォルトです)。これらのデータノードは、一部のネットワーク環境では機密または脆弱であると見なされる場合があります。適切な保護なしにこれらのデータノードに書き込み操作(edit-configなど)を行うと、ネットワーク操作に悪影響を与える可能性があります。これらは、サブツリーとデータノード、およびそれらの機密性/脆弱性です。

/routing/control-plane-protocols/control-plane-protocol: This list specifies the control-plane protocols configured on a device.

/ routing / control-plane-protocols / control-plane-protocol:このリストは、デバイスに構成されているコントロールプレーンプロトコルを指定します。

/routing/ribs/rib: This list specifies the RIBs configured for the device.

/ routing / ribs / rib:このリストは、デバイスに構成されたRIBを指定します。

Some of the readable data nodes in these YANG modules may be considered sensitive or vulnerable in some network environments. It is thus important to control read access (e.g., via get, get-config, or notification) to these data nodes. These are the subtrees and data nodes and their sensitivity/vulnerability:

これらのYANGモジュールの一部の読み取り可能なデータノードは、一部のネットワーク環境では機密または脆弱であると見なされる場合があります。したがって、これらのデータノードへの読み取りアクセスを制御することが重要です(たとえば、get、get-config、または通知を介して)。これらは、サブツリーとデータノード、およびそれらの機密性/脆弱性です。

/routing/control-plane-protocols/control-plane-protocol: This list specifies the control-plane protocols configured on a device. Refer to the control-plane models for a list of sensitive information.

/ routing / control-plane-protocols / control-plane-protocol:このリストは、デバイスに構成されているコントロールプレーンプロトコルを指定します。機密情報のリストについては、コントロールプレーンモデルを参照してください。

/routing/ribs/rib: This list specifies the RIBs and their contents for the device. Access to this information may disclose the network topology and/or other information.

/ routing / ribs / rib:このリストは、デバイスのRIBとその内容を指定します。この情報にアクセスすると、ネットワークトポロジやその他の情報が開示される可能性があります。

Some of the RPC operations in this YANG module may be considered sensitive or vulnerable in some network environments. It is thus important to control access to these operations. These are the operations and their sensitivity/vulnerability:

このYANGモジュールの一部のRPC操作は、一部のネットワーク環境では機密または脆弱であると見なされる場合があります。したがって、これらの操作へのアクセスを制御することが重要です。これらは操作とその感度/脆弱性です:

/routing/ribs/rib/active-route: The output from this RPC operation returns the route that is being used for a specified destination. Access to this information may disclose the network topology or relationship (e.g., client/provider). Additionally, the routes used by a network device may be used to mount a subsequent attack on traffic traversing the network device.

/ routing / ribs / rib / active-route:このRPCオペレーションからの出力は、指定された宛先に使用されているルートを返します。この情報へのアクセスにより、ネットワークトポロジまたは関係(クライアント/プロバイダーなど)が開示される可能性があります。さらに、ネットワークデバイスが使用するルートを使用して、ネットワークデバイスを通過するトラフィックに後続の攻撃を仕掛けることができます。

12. References
12. 参考文献
12.1. Normative References
12.1. 引用文献

[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, <https://www.rfc-editor.org/info/rfc2119>.

[RFC2119] Bradner、S。、「要件レベルを示すためにRFCで使用するキーワード」、BCP 14、RFC 2119、DOI 10.17487 / RFC2119、1997年3月、<https://www.rfc-editor.org/info/ rfc2119>。

[RFC3688] Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688, DOI 10.17487/RFC3688, January 2004, <https://www.rfc-editor.org/info/rfc3688>.

[RFC3688] Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688, DOI 10.17487/RFC3688, January 2004, <https://www.rfc-editor.org/info/rfc3688>.

[RFC4861] Narten, T., Nordmark, E., Simpson, W., and H. Soliman, "Neighbor Discovery for IP version 6 (IPv6)", RFC 4861, DOI 10.17487/RFC4861, September 2007, <https://www.rfc-editor.org/info/rfc4861>.

[RFC4861] Narten、T.、Nordmark、E.、Simpson、W。、およびH. Soliman、「Neighbor Discovery for IP version 6(IPv6)」、RFC 4861、DOI 10.17487 / RFC4861、2007年9月、<https:/ /www.rfc-editor.org/info/rfc4861>。

[RFC5246] Dierks, T. and E. Rescorla, "The Transport Layer Security (TLS) Protocol Version 1.2", RFC 5246, DOI 10.17487/RFC5246, August 2008, <https://www.rfc-editor.org/info/rfc5246>.

[RFC5246] Dierks、T。およびE. Rescorla、「The Transport Layer Security(TLS)Protocol Version 1.2」、RFC 5246、DOI 10.17487 / RFC5246、2008年8月、<https://www.rfc-editor.org/info / rfc5246>。

[RFC6020] Bjorklund, M., Ed., "YANG - A Data Modeling Language for the Network Configuration Protocol (NETCONF)", RFC 6020, DOI 10.17487/RFC6020, October 2010, <https://www.rfc-editor.org/info/rfc6020>.

[RFC6020] Bjorklund、M。、編、「YANG-ネットワーク構成プロトコル(NETCONF)のデータモデリング言語」、RFC 6020、DOI 10.17487 / RFC6020、2010年10月、<https://www.rfc-editor。 org / info / rfc6020>。

[RFC6241] Enns, R., Ed., Bjorklund, M., Ed., Schoenwaelder, J., Ed., and A. Bierman, Ed., "Network Configuration Protocol (NETCONF)", RFC 6241, DOI 10.17487/RFC6241, June 2011, <https://www.rfc-editor.org/info/rfc6241>.

[RFC6241] Enns、R。、編、Bjorklund、M。、編、Schoenwaelder、J。、編、およびA. Bierman、編、「Network Configuration Protocol(NETCONF)」、RFC 6241、DOI 10.17487 / RFC6241、2011年6月、<https://www.rfc-editor.org/info/rfc6241>。

[RFC6242] Wasserman, M., "Using the NETCONF Protocol over Secure Shell (SSH)", RFC 6242, DOI 10.17487/RFC6242, June 2011, <https://www.rfc-editor.org/info/rfc6242>.

[RFC6242] Wasserman、M。、「Using the NETCONF Protocol over Secure Shell(SSH)」、RFC 6242、DOI 10.17487 / RFC6242、2011年6月、<https://www.rfc-editor.org/info/rfc6242>。

[RFC6991] Schoenwaelder, J., Ed., "Common YANG Data Types", RFC 6991, DOI 10.17487/RFC6991, July 2013, <https://www.rfc-editor.org/info/rfc6991>.

[RFC6991] Schoenwaelder、J。、編、「Common YANG Data Types」、RFC 6991、DOI 10.17487 / RFC6991、2013年7月、<https://www.rfc-editor.org/info/rfc6991>。

[RFC7950] Bjorklund, M., Ed., "The YANG 1.1 Data Modeling Language", RFC 7950, DOI 10.17487/RFC7950, August 2016, <https://www.rfc-editor.org/info/rfc7950>.

[RFC7950] Bjorklund、M。、編、「The YANG 1.1 Data Modeling Language」、RFC 7950、DOI 10.17487 / RFC7950、2016年8月、<https://www.rfc-editor.org/info/rfc7950>。

[RFC8022] Lhotka, L. and A. Lindem, "A YANG Data Model for Routing Management", RFC 8022, DOI 10.17487/RFC8022, November 2016, <https://www.rfc-editor.org/info/rfc8022>.

[RFC8022] Lhotka、L。およびA. Lindem、「ルーティング管理のためのYANGデータモデル」、RFC 8022、DOI 10.17487 / RFC8022、2016年11月、<https://www.rfc-editor.org/info/rfc8022> 。

[RFC8040] Bierman, A., Bjorklund, M., and K. Watsen, "RESTCONF Protocol", RFC 8040, DOI 10.17487/RFC8040, January 2017, <https://www.rfc-editor.org/info/rfc8040>.

[RFC8040] Bierman、A.、Bjorklund、M。、およびK. Watsen、「RESTCONFプロトコル」、RFC 8040、DOI 10.17487 / RFC8040、2017年1月、<https://www.rfc-editor.org/info/rfc8040 >。

[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174, May 2017, <https://www.rfc-editor.org/info/rfc8174>.

[RFC8174] Leiba、B。、「RFC 2119キーワードの大文字と小文字のあいまいさ」、BCP 14、RFC 8174、DOI 10.17487 / RFC8174、2017年5月、<https://www.rfc-editor.org/info/ rfc8174>。

[RFC8341] Bierman, A. and M. Bjorklund, "Network Configuration Access Control Model", STD 91, RFC 8341, DOI 10.17487/RFC8341, March 2018, <https://www.rfc-editor.org/info/rfc8341>.

[RFC8341] Bierman, A. and M. Bjorklund, "Network Configuration Access Control Model", STD 91, RFC 8341, DOI 10.17487/RFC8341, March 2018, <https://www.rfc-editor.org/info/rfc8341>.

[RFC8342] Bjorklund, M., Schoenwaelder, J., Shafer, P., Watsen, K., and R. Wilton, "Network Management Datastore Architecture (NMDA)", RFC 8342, DOI 10.17487/RFC8342, March 2018, <https://www.rfc-editor.org/info/rfc8342>.

[RFC8342] Bjorklund、M.、Schoenwaelder、J.、Shafer、P.、Watsen、K。、およびR. Wilton、「Network Management Datastore Architecture(NMDA)」、RFC 8342、DOI 10.17487 / RFC8342、2018年3月、< https://www.rfc-editor.org/info/rfc8342>。

[RFC8343] Bjorklund, M., "A YANG Data Model for Interface Management", RFC 8343, DOI 10.17487/RFC8343, March 2018, <https://www.rfc-editor.org/info/rfc8343>.

[RFC8343] Bjorklund、M。、「A YANG Data Model for Interface Management」、RFC 8343、DOI 10.17487 / RFC8343、2018年3月、<https://www.rfc-editor.org/info/rfc8343>。

[RFC8344] Bjorklund, M., "A YANG Data Model for IP Management", RFC 8344, DOI 10.17487/RFC8344, March 2018, <https://www.rfc-editor.org/info/rfc8344>.

[RFC8344] Bjorklund、M。、「IP管理用のYANGデータモデル」、RFC 8344、DOI 10.17487 / RFC8344、2018年3月、<https://www.rfc-editor.org/info/rfc8344>。

[W3C.REC-xml-20081126] Bray, T., Paoli, J., Sperberg-McQueen, M., Maler, E., and F. Yergeau, "Extensible Markup Language (XML) 1.0 (Fifth Edition)", World Wide Web Consortium Recommendation REC-xml-20081126, November 2008, <https://www.w3.org/TR/2008/REC-xml-20081126>.

[W3C.REC-xml-20081126]ブレイ、T。、パオリ、J.、Sperberg-McQueen、M。、マラー、E。、およびF.イェルガウ、「Extensible Markup Language(XML)1.0(Fifth Edition)」、 World Wide Web Consortium Recommendation REC-xml-20081126、2008年11月、<https://www.w3.org/TR/2008/REC-xml-20081126>。

12.2. Informative References
12.2. 参考引用

[RFC7224] Bjorklund, M., "IANA Interface Type YANG Module", RFC 7224, DOI 10.17487/RFC7224, May 2014, <https://www.rfc-editor.org/info/rfc7224>.

[RFC7224] Bjorklund、M。、「IANA Interface Type YANG Module」、RFC 7224、DOI 10.17487 / RFC7224、2014年5月、<https://www.rfc-editor.org/info/rfc7224>。

[RFC7895] Bierman, A., Bjorklund, M., and K. Watsen, "YANG Module Library", RFC 7895, DOI 10.17487/RFC7895, June 2016, <https://www.rfc-editor.org/info/rfc7895>.

[RFC7895] Bierman、A.、Bjorklund、M。、およびK. Watsen、「YANG Module Library」、RFC 7895、DOI 10.17487 / RFC7895、2016年6月、<https://www.rfc-editor.org/info/ rfc7895>。

[RFC7951] Lhotka, L., "JSON Encoding of Data Modeled with YANG", RFC 7951, DOI 10.17487/RFC7951, August 2016, <https://www.rfc-editor.org/info/rfc7951>.

[RFC7951] Lhotka、L。、「YANGでモデル化されたデータのJSONエンコーディング」、RFC 7951、DOI 10.17487 / RFC7951、2016年8月、<https://www.rfc-editor.org/info/rfc7951>。

[RFC8340] Bjorklund, M. and L. Berger, Ed., "YANG Tree Diagrams", BCP 215, RFC 8340, DOI 10.17487/RFC8340, March 2018, <https://www.rfc-editor.org/info/rfc8340>.

[RFC8340] Bjorklund、M。およびL. Berger、編、「YANG Tree Diagrams」、BCP 215、RFC 8340、DOI 10.17487 / RFC8340、2018年3月、<https://www.rfc-editor.org/info/ rfc8340>。

[YANG-Guidelines] Bierman, A., "Guidelines for Authors and Reviewers of YANG Data Model Documents", Work in Progress, draft-ietf-netmod-rfc6087bis-20, March 2018.

[YANG-Guidelines] Bierman、A。、「YANG Data Model Documentsの作成者とレビューアーのためのガイドライン」、Work in Progress、draft-ietf-netmod-rfc6087bis-20、2018年3月。

Appendix A. The Complete Schema Tree
付録A.完全なスキーマツリー

This appendix presents the complete tree of the core routing data model. See [RFC8340] for an explanation of the symbols used. The data type of every leaf node is shown near the right end of the corresponding line.

この付録では、コアルーティングデータモデルの完全なツリーを示します。使用される記号の説明については、[RFC8340]を参照してください。すべての葉ノードのデータ型は、対応する行の右端近くに表示されます。

   module: ietf-routing
     +--rw routing
     |  +--rw router-id?                 yang:dotted-quad
     |  +--ro interfaces
     |  |  +--ro interface*   if:interface-ref
     |  +--rw control-plane-protocols
     |  |  +--rw control-plane-protocol* [type name]
     |  |     +--rw type             identityref
     |  |     +--rw name             string
     |  |     +--rw description?     string
     |  |     +--rw static-routes
     |  |        +--rw v4ur:ipv4
     |  |        |  +--rw v4ur:route* [destination-prefix]
     |  |        |     +--rw v4ur:destination-prefix
     |  |        |     |       inet:ipv4-prefix
     |  |        |     +--rw v4ur:description?          string
     |  |        |     +--rw v4ur:next-hop
     |  |        |        +--rw (v4ur:next-hop-options)
     |  |        |           +--:(v4ur:simple-next-hop)
     |  |        |           |  +--rw v4ur:outgoing-interface?
     |  |        |           |  |       if:interface-ref
     |  |        |           |  +--rw v4ur:next-hop-address?
     |  |        |           |          inet:ipv4-address
     |  |        |           +--:(v4ur:special-next-hop)
     |  |        |           |  +--rw v4ur:special-next-hop?
     |  |        |           |          enumeration
     |  |        |           +--:(v4ur:next-hop-list)
     |  |        |              +--rw v4ur:next-hop-list
     |  |        |                 +--rw v4ur:next-hop* [index]
     |  |        |                    +--rw v4ur:index
     |  |        |                    |       string
     |  |        |                    +--rw v4ur:outgoing-interface?
     |  |        |                    |       if:interface-ref
     |  |        |                    +--rw v4ur:next-hop-address?
     |  |        |                            inet:ipv4-address
     |  |        +--rw v6ur:ipv6
     |  |           +--rw v6ur:route* [destination-prefix]
     |  |              +--rw v6ur:destination-prefix
     |  |              |       inet:ipv6-prefix
     |  |              +--rw v6ur:description?          string
        
     |  |              +--rw v6ur:next-hop
     |  |                 +--rw (v6ur:next-hop-options)
     |  |                    +--:(v6ur:simple-next-hop)
     |  |                    |  +--rw v6ur:outgoing-interface?
     |  |                    |  |       if:interface-ref
     |  |                    |  +--rw v6ur:next-hop-address?
     |  |                    |          inet:ipv6-address
     |  |                    +--:(v6ur:special-next-hop)
     |  |                    |  +--rw v6ur:special-next-hop?
     |  |                    |          enumeration
     |  |                    +--:(v6ur:next-hop-list)
     |  |                       +--rw v6ur:next-hop-list
     |  |                          +--rw v6ur:next-hop* [index]
     |  |                             +--rw v6ur:index
     |  |                             |       string
     |  |                             +--rw v6ur:outgoing-interface?
     |  |                             |       if:interface-ref
     |  |                             +--rw v6ur:next-hop-address?
     |  |                                     inet:ipv6-address
     |  +--rw ribs
     |     +--rw rib* [name]
     |        +--rw name              string
     |        +--rw address-family    identityref
     |        +--ro default-rib?      boolean {multiple-ribs}?
     |        +--ro routes
     |        |  +--ro route*
     |        |     +--ro route-preference?          route-preference
     |        |     +--ro next-hop
     |        |     |  +--ro (next-hop-options)
     |        |     |     +--:(simple-next-hop)
     |        |     |     |  +--ro outgoing-interface?
     |        |     |     |  |       if:interface-ref
     |        |     |     |  +--ro v4ur:next-hop-address?
     |        |     |     |  |       inet:ipv4-address
     |        |     |     |  +--ro v6ur:next-hop-address?
     |        |     |     |          inet:ipv6-address
     |        |     |     +--:(special-next-hop)
     |        |     |     |  +--ro special-next-hop?        enumeration
     |        |     |     +--:(next-hop-list)
     |        |     |        +--ro next-hop-list
     |        |     |           +--ro next-hop*
     |        |     |              +--ro outgoing-interface?
     |        |     |              |       if:interface-ref
     |        |     |              +--ro v4ur:address?
     |        |     |              |       inet:ipv4-address
     |        |     |              +--ro v6ur:address?
     |        |     |                      inet:ipv6-address
        
     |        |     +--ro source-protocol            identityref
     |        |     +--ro active?                    empty
     |        |     +--ro last-updated?              yang:date-and-time
     |        |     +--ro v4ur:destination-prefix?   inet:ipv4-prefix
     |        |     +--ro v6ur:destination-prefix?   inet:ipv6-prefix
     |        +---x active-route
     |        |  +---w input
     |        |  |  +---w v4ur:destination-address?   inet:ipv4-address
     |        |  |  +---w v6ur:destination-address?   inet:ipv6-address
     |        |  +--ro output
     |        |     +--ro route
     |        |        +--ro next-hop
     |        |        |  +--ro (next-hop-options)
     |        |        |     +--:(simple-next-hop)
     |        |        |     |  +--ro outgoing-interface?
     |        |        |     |  |       if:interface-ref
     |        |        |     |  +--ro v4ur:next-hop-address?
     |        |        |     |  |       inet:ipv4-address
     |        |        |     |  +--ro v6ur:next-hop-address?
     |        |        |     |          inet:ipv6-address
     |        |        |     +--:(special-next-hop)
     |        |        |     |  +--ro special-next-hop?
     |        |        |     |          enumeration
     |        |        |     +--:(next-hop-list)
     |        |        |        +--ro next-hop-list
     |        |        |           +--ro next-hop*
     |        |        |              +--ro outgoing-interface?
     |        |        |              |       if:interface-ref
     |        |        |              +--ro v4ur:next-hop-address?
     |        |        |              |       inet:ipv4-address
     |        |        |              +--ro v6ur:next-hop-address?
     |        |        |                      inet:ipv6-address
     |        |        +--ro source-protocol            identityref
     |        |        +--ro active?                    empty
     |        |        +--ro last-updated?
     |        |        |       yang:date-and-time
     |        |        +--ro v4ur:destination-prefix?
     |        |        |       inet:ipv4-prefix
     |        |        +--ro v6ur:destination-prefix?
     |        |                inet:ipv6-prefix
     |        +--rw description?      string
     o--ro routing-state
        o--ro router-id?                 yang:dotted-quad
        o--ro interfaces
        |  o--ro interface*   if:interface-state-ref
        o--ro control-plane-protocols
        |  o--ro control-plane-protocol* [type name]
        |     o--ro type    identityref
        |     o--ro name    string
        o--ro ribs
           o--ro rib* [name]
              o--ro name              string
              o--ro address-family    identityref
              o--ro default-rib?      boolean {multiple-ribs}?
              o--ro routes
              |  o--ro route*
              |     o--ro route-preference?          route-preference
              |     o--ro next-hop
              |     |  o--ro (next-hop-options)
              |     |     o--:(simple-next-hop)
              |     |     |  o--ro outgoing-interface?
              |     |     |  |       if:interface-ref
              |     |     |  o--ro v4ur:next-hop-address?
              |     |     |  |       inet:ipv4-address
              |     |     |  o--ro v6ur:next-hop-address?
              |     |     |          inet:ipv6-address
              |     |     o--:(special-next-hop)
              |     |     |  o--ro special-next-hop?        enumeration
              |     |     o--:(next-hop-list)
              |     |        o--ro next-hop-list
              |     |           o--ro next-hop*
              |     |              o--ro outgoing-interface?
              |     |              |       if:interface-ref
              |     |              o--ro v4ur:address?
              |     |              |       inet:ipv4-address
              |     |              o--ro v6ur:address?
              |     |                      inet:ipv6-address
              |     o--ro source-protocol            identityref
              |     o--ro active?                    empty
              |     o--ro last-updated?              yang:date-and-time
              |     o--ro v4ur:destination-prefix?   inet:ipv4-prefix
              |     o--ro v6ur:destination-prefix?   inet:ipv6-prefix
              o---x active-route
                 o---w input
                 |  o---w v4ur:destination-address?   inet:ipv4-address
                 |  o---w v6ur:destination-address?   inet:ipv6-address
                 o--ro output
        
                    o--ro route
                       o--ro next-hop
                       |  o--ro (next-hop-options)
                       |     o--:(simple-next-hop)
                       |     |  o--ro outgoing-interface?
                       |     |  |       if:interface-ref
                       |     |  o--ro v4ur:next-hop-address?
                       |     |  |       inet:ipv4-address
                       |     |  o--ro v6ur:next-hop-address?
                       |     |          inet:ipv6-address
                       |     o--:(special-next-hop)
                       |     |  o--ro special-next-hop?
                       |     |          enumeration
                       |     o--:(next-hop-list)
                       |        o--ro next-hop-list
                       |           o--ro next-hop*
                       |              o--ro outgoing-interface?
                       |              |       if:interface-ref
                       |              o--ro v4ur:next-hop-address?
                       |              |       inet:ipv4-address
                       |              o--ro v6ur:next-hop-address?
                       |                      inet:ipv6-address
                       o--ro source-protocol            identityref
                       o--ro active?                    empty
                       o--ro last-updated?
                       |       yang:date-and-time
                       o--ro v4ur:destination-prefix?
                       |       inet:ipv4-prefix
                       o--ro v6ur:destination-prefix?
                               inet:ipv6-prefix
   module: ietf-ipv6-unicast-routing
     augment /if:interfaces/if:interface/ip:ipv6:
       +--rw ipv6-router-advertisements
          +--rw send-advertisements?    boolean
          +--rw max-rtr-adv-interval?   uint16
          +--rw min-rtr-adv-interval?   uint16
          +--rw managed-flag?           boolean
          +--rw other-config-flag?      boolean
          +--rw link-mtu?               uint32
          +--rw reachable-time?         uint32
          +--rw retrans-timer?          uint32
          +--rw cur-hop-limit?          uint8
          +--rw default-lifetime?       uint16
          +--rw prefix-list
             +--rw prefix* [prefix-spec]
                +--rw prefix-spec           inet:ipv6-prefix
        
                +--rw (control-adv-prefixes)?
                   +--:(no-advertise)
                   |  +--rw no-advertise?         empty
                   +--:(advertise)
                      +--rw valid-lifetime?       uint32
                      +--rw on-link-flag?         boolean
                      +--rw preferred-lifetime?   uint32
                      +--rw autonomous-flag?      boolean
     augment /if:interfaces-state/if:interface/ip:ipv6:
       o--ro ipv6-router-advertisements
          o--ro send-advertisements?    boolean
          o--ro max-rtr-adv-interval?   uint16
          o--ro min-rtr-adv-interval?   uint16
          o--ro managed-flag?           boolean
          o--ro other-config-flag?      boolean
          o--ro link-mtu?               uint32
          o--ro reachable-time?         uint32
          o--ro retrans-timer?          uint32
          o--ro cur-hop-limit?          uint8
          o--ro default-lifetime?       uint16
          o--ro prefix-list
             o--ro prefix* [prefix-spec]
                o--ro prefix-spec           inet:ipv6-prefix
                o--ro valid-lifetime?       uint32
                o--ro on-link-flag?         boolean
                o--ro preferred-lifetime?   uint32
                o--ro autonomous-flag?      boolean
        
Appendix B. Minimum Implementation
付録B.最小実装

Some parts and options of the core routing model, such as user-defined RIBs, are intended only for advanced routers. This appendix gives basic non-normative guidelines for implementing a bare minimum of available functions. Such an implementation may be used for hosts or very simple routers.

Some parts and options of the core routing model, such as user-defined RIBs, are intended only for advanced routers. This appendix gives basic non-normative guidelines for implementing a bare minimum of available functions. Such an implementation may be used for hosts or very simple routers.

A minimum implementation does not support the "multiple-ribs" feature. This means that a single system-controlled RIB is available for each supported address family -- IPv4, IPv6, or both. These RIBs are also the default RIBs. No user-controlled RIBs are allowed.

A minimum implementation does not support the "multiple-ribs" feature. This means that a single system-controlled RIB is available for each supported address family -- IPv4, IPv6, or both. These RIBs are also the default RIBs. No user-controlled RIBs are allowed.

In addition to the mandatory instance of the "direct" pseudo-protocol, a minimum implementation should support configuring instance(s) of the "static" pseudo-protocol.

In addition to the mandatory instance of the "direct" pseudo-protocol, a minimum implementation should support configuring instance(s) of the "static" pseudo-protocol.

For hosts that are never intended to act as routers, the ability to turn on sending IPv6 Router Advertisements (Section 5.4) should be removed.

ルーターとして動作することを意図していないホストの場合、IPv6ルーターアドバタイズメント(セクション5.4)の送信をオンにする機能を削除する必要があります。

Platforms with severely constrained resources may use deviations for restricting the data model, e.g., limiting the number of "static" control-plane protocol instances.

リソースの制約が厳しいプラットフォームでは、偏差を使用してデータモデルを制限する場合があります。たとえば、「静的な」コントロールプレーンプロトコルインスタンスの数を制限するなどです。

Appendix C. Example: Adding a New Control-Plane Protocol

付録C.例:新しいコントロールプレーンプロトコルの追加

This appendix demonstrates how the core routing data model can be extended to support a new control-plane protocol. The YANG module "example-rip" shown below is intended as an illustration rather than a real definition of a data model for the Routing Information Protocol (RIP). For the sake of brevity, this module does not obey all the guidelines specified in [YANG-Guidelines]. See also Section 5.3.2.

この付録では、コアルーティングデータモデルを拡張して、新しいコントロールプレーンプロトコルをサポートする方法を示します。以下に示すYANGモジュール「example-rip」は、Routing Information Protocol(RIP)のデータモデルの実際の定義ではなく、説明を目的としています。簡潔にするため、このモジュールは[YANG-Guidelines]で指定されているすべてのガイドラインに従っているわけではありません。セクション5.3.2も参照してください。

module example-rip {

module example-rip {

     yang-version "1.1";
     namespace "http://example.com/rip";
     prefix "rip";
        
     import ietf-interfaces {
       prefix "if";
     }
        
     import ietf-routing {
       prefix "rt";
     }
        
     identity rip {
       base rt:routing-protocol;
       description
         "Identity for the Routing Information Protocol (RIP).";
     }
        
     typedef rip-metric {
       type uint8 {
         range "0..16";
       }
     }
     grouping route-content {
       description
         "This grouping defines RIP-specific route attributes.";
       leaf metric {
         type rip-metric;
       }
       leaf tag {
         type uint16;
         default "0";
         description
           "This leaf may be used to carry additional information,
            e.g., an autonomous system (AS) number.";
       }
     }
        
     augment "/rt:routing/rt:ribs/rt:rib/rt:routes/rt:route" {
       when "derived-from-or-self(rt:source-protocol, 'rip:rip')" {
         description
           "This augment is only valid for a route whose source
            protocol is RIP.";
       }
       description
         "RIP-specific route attributes.";
       uses route-content;
     }
        
     augment "/rt:routing/rt:ribs/rt:rib/rt:active-route/"
           + "rt:output/rt:route" {
       description
         "RIP-specific route attributes in the output of an
          'active-route' RPC.";
       uses route-content;
     }
        
     augment "/rt:routing/rt:control-plane-protocols/"
           + "rt:control-plane-protocol" {
       when "derived-from-or-self(rt:type,'rip:rip')" {
         description
           "This augment is only valid for a routing protocol instance
            of type 'rip'.";
       }
       container rip {
         presence
           "RIP configuration";
         description
           "RIP instance configuration.";
         container interfaces {
        
           description
             "Per-interface RIP configuration.";
           list interface {
             key "name";
             description
               "RIP is enabled on interfaces that have an entry in this
                list, unless 'enabled' is set to 'false' for that
                entry.";
             leaf name {
               type if:interface-ref;
             }
             leaf enabled {
               type boolean;
               default "true";
             }
             leaf metric {
               type rip-metric;
               default "1";
             }
           }
         }
         leaf update-interval {
           type uint8 {
             range "10..60";
           }
           units "seconds";
           default "30";
           description
             "Time interval between periodic updates.";
         }
       }
     }
   }
        
Appendix D. Data Tree Example
付録D.データツリーの例

This section contains an example of an instance data tree from the operational state, in JSON encoding [RFC7951]. (This example includes "iana-if-type", which is defined in [RFC7224].)

This section contains an example of an instance data tree from the operational state, in JSON encoding [RFC7951]. (This example includes "iana-if-type", which is defined in [RFC7224].)

The data conforms to a data model that is defined by the following YANG library specification [RFC7895]:

データは、次のYANGライブラリ仕様[RFC7895]で定義されているデータモデルに準拠しています。

    {
      "ietf-yang-library:modules-state": {
        "module-set-id": "c2e1f54169aa7f36e1a6e8d0865d441d3600f9c4",
        "module": [
          {
            "name": "ietf-routing",
            "revision": "2018-03-13",
            "feature": [
              "multiple-ribs",
              "router-id"
            ],
            "namespace": "urn:ietf:params:xml:ns:yang:ietf-routing",
            "conformance-type": "implement"
          },
          {
            "name": "ietf-ipv4-unicast-routing",
            "revision": "2018-03-13",
            "namespace":
              "urn:ietf:params:xml:ns:yang:ietf-ipv4-unicast-routing",
            "conformance-type": "implement"
          },
          {
            "name": "ietf-ipv6-unicast-routing",
            "revision": "2018-03-13",
            "namespace":
              "urn:ietf:params:xml:ns:yang:ietf-ipv6-unicast-routing",
            "conformance-type": "implement",
            "submodule": [
              {
                "name": "ietf-ipv6-router-advertisements",
                "revision": "2018-03-13"
              }
            ]
          },
          {
            "name": "ietf-interfaces",
            "revision": "2018-02-20",
            "namespace": "urn:ietf:params:xml:ns:yang:ietf-interfaces",
            "conformance-type": "implement"
        
          },
          {
            "name": "ietf-inet-types",
            "namespace": "urn:ietf:params:xml:ns:yang:ietf-inet-types",
            "revision": "2013-07-15",
            "conformance-type": "import"
          },
          {
            "name": "ietf-yang-types",
            "namespace": "urn:ietf:params:xml:ns:yang:ietf-yang-types",
            "revision": "2013-07-15",
            "conformance-type": "import"
          },
          {
            "name": "iana-if-type",
            "namespace": "urn:ietf:params:xml:ns:yang:iana-if-type",
            "revision": "2014-05-08",
            "conformance-type": "implement"
          },
          {
            "name": "ietf-ip",
            "revision": "2018-02-22",
            "namespace": "urn:ietf:params:xml:ns:yang:ietf-ip",
            "conformance-type": "implement"
          }
        ]
      }
    }
        

A simple network setup as shown in Figure 2 is assumed: router "A" uses static default routes with the "ISP" router as the next hop. IPv6 Router Advertisements are configured only on the "eth1" interface and disabled on the upstream "eth0" interface.

図2に示すような単純なネットワーク設定が想定されています。ルーター「A」は、「ISP」ルーターをネクストホップとして静的デフォルトルートを使用します。 IPv6ルーターアドバタイズは、「eth1」インターフェイスでのみ設定され、アップストリームの「eth0」インターフェイスでは無効になります。

                   +-----------------+
                   |                 |
                   |    Router ISP   |
                   |                 |
                   +--------+--------+
                            |2001:db8:0:1::2
                            |192.0.2.2
                            |
                            |
                            |2001:db8:0:1::1
                        eth0|192.0.2.1
                   +--------+--------+
                   |                 |
                   |     Router A    |
                   |                 |
                   +--------+--------+
                        eth1|198.51.100.1
                            |2001:db8:0:2::1
                            |
        

Figure 2: Example of Network Configuration

図2:ネットワーク構成の例

The instance data tree could then be as follows:

The instance data tree could then be as follows:

   {
     "ietf-interfaces:interfaces": {
       "interface": [
         {
           "name": "eth0",
           "type": "iana-if-type:ethernetCsmacd",
           "description": "Uplink to ISP.",
           "phys-address": "00:0C:42:E5:B1:E9",
           "oper-status": "up",
           "statistics": {
             "discontinuity-time": "2015-10-24T17:11:27+02:00"
           },
           "ietf-ip:ipv4": {
             "forwarding": true,
             "mtu": 1500,
             "address": [
               {
                 "ip": "192.0.2.1",
                 "prefix-length": 24
        
               }
             ]
           },
           "ietf-ip:ipv6": {
             "forwarding": true,
             "mtu": 1500,
             "address": [
               {
                 "ip": "2001:0db8:0:1::1",
                 "prefix-length": 64
               }
             ],
             "autoconf": {
               "create-global-addresses": false
             },
             "ietf-ipv6-unicast-routing:ipv6-router-advertisements": {
               "send-advertisements": false
             }
           }
         },
         {
           "name": "eth1",
           "type": "iana-if-type:ethernetCsmacd",
           "description": "Interface to the internal network.",
           "phys-address": "00:0C:42:E5:B1:EA",
           "oper-status": "up",
           "statistics": {
             "discontinuity-time": "2015-10-24T17:11:29+02:00"
           },
           "ietf-ip:ipv4": {
             "forwarding": true,
             "mtu": 1500,
             "address": [
               {
                 "ip": "198.51.100.1",
                 "prefix-length": 24
               }
             ]
           },
           "ietf-ip:ipv6": {
             "forwarding": true,
             "mtu": 1500,
             "address": [
               {
                 "ip": "2001:0db8:0:2::1",
                 "prefix-length": 64
               }
             ],
        
             "autoconf": {
               "create-global-addresses": false
             },
             "ietf-ipv6-unicast-routing:ipv6-router-advertisements": {
               "send-advertisements": true,
               "prefix-list": {
                 "prefix": [
                   {
                     "prefix-spec": "2001:db8:0:2::/64"
                   }
                 ]
               }
             }
           }
         }
       ]
     },
        
     "ietf-routing:routing": {
       "router-id": "192.0.2.1",
       "control-plane-protocols": {
         "control-plane-protocol": [
           {
             "type": "ietf-routing:static",
             "name": "st0",
             "description":
               "Static routing is used for the internal network.",
             "static-routes": {
               "ietf-ipv4-unicast-routing:ipv4": {
                 "route": [
                   {
                     "destination-prefix": "0.0.0.0/0",
                     "next-hop": {
                       "next-hop-address": "192.0.2.2"
                     }
                   }
                 ]
               },
               "ietf-ipv6-unicast-routing:ipv6": {
                 "route": [
                   {
                     "destination-prefix": "::/0",
                     "next-hop": {
                       "next-hop-address": "2001:db8:0:1::2"
                     }
                   }
                 ]
               }
        
             }
           }
         ]
       },
       "ribs": {
         "rib": [
           {
             "name": "ipv4-master",
             "address-family":
               "ietf-ipv4-unicast-routing:ipv4-unicast",
             "default-rib": true,
             "routes": {
               "route": [
                 {
                   "ietf-ipv4-unicast-routing:destination-prefix":
                     "192.0.2.1/24",
                   "next-hop": {
                     "outgoing-interface": "eth0"
                   },
                   "route-preference": 0,
                   "source-protocol": "ietf-routing:direct",
                   "last-updated": "2015-10-24T17:11:27+02:00"
                 },
                 {
                   "ietf-ipv4-unicast-routing:destination-prefix":
                     "198.51.100.0/24",
                   "next-hop": {
                     "outgoing-interface": "eth1"
                   },
                   "source-protocol": "ietf-routing:direct",
                   "route-preference": 0,
                   "last-updated": "2015-10-24T17:11:27+02:00"
                 },
                 {
                   "ietf-ipv4-unicast-routing:destination-prefix":
                     "0.0.0.0/0",
                   "source-protocol": "ietf-routing:static",
                   "route-preference": 5,
                   "next-hop": {
                     "ietf-ipv4-unicast-routing:next-hop-address":
                       "192.0.2.2"
                   },
                   "last-updated": "2015-10-24T18:02:45+02:00"
                 }
               ]
             }
           },
           {
        
             "name": "ipv6-master",
             "address-family":
               "ietf-ipv6-unicast-routing:ipv6-unicast",
             "default-rib": true,
             "routes": {
               "route": [
                 {
                   "ietf-ipv6-unicast-routing:destination-prefix":
                     "2001:db8:0:1::/64",
                   "next-hop": {
                     "outgoing-interface": "eth0"
                   },
                   "source-protocol": "ietf-routing:direct",
                   "route-preference": 0,
                   "last-updated": "2015-10-24T17:11:27+02:00"
                 },
                 {
                   "ietf-ipv6-unicast-routing:destination-prefix":
                     "2001:db8:0:2::/64",
                   "next-hop": {
                     "outgoing-interface": "eth1"
                   },
                   "source-protocol": "ietf-routing:direct",
                   "route-preference": 0,
                   "last-updated": "2015-10-24T17:11:27+02:00"
                 },
                 {
                   "ietf-ipv6-unicast-routing:destination-prefix":
                     "::/0",
                   "next-hop": {
                     "ietf-ipv6-unicast-routing:next-hop-address":
                       "2001:db8:0:1::2"
                   },
                   "source-protocol": "ietf-routing:static",
                   "route-preference": 5,
                   "last-updated": "2015-10-24T18:02:45+02:00"
                 }
               ]
             }
           }
         ]
       }
     }
   }
        
Appendix E. NETCONF Get Data Reply Example
付録E. NETCONFデータ取得応答の例

This section gives an example of an XML [W3C.REC-xml-20081126] reply to the NETCONF <get-data> request for <operational> for a device that implements the example data models above.

This section gives an example of an XML [W3C.REC-xml-20081126] reply to the NETCONF <get-data> request for <operational> for a device that implements the example data models above.

   <rpc-reply
    xmlns="urn:ietf:params:xml:ns:netconf:base:1.0"
    message-id="101">
    <data>
      <routing
        xmlns="urn:ietf:params:xml:ns:yang:ietf-routing"
        xmlns:or="urn:ietf:params:xml:ns:yang:ietf-origin">
        
        <router-id or:origin="or:intended">192.0.2.1</router-id>
        <control-plane-protocols or:origin="or:intended">
          <control-plane-protocol>
            <type>ietf-routing:static</type>
            <name>static-routing-protocol</name>
            <static-routes>
              <ietf-ipv4-unicast-routing:ipv4>
                <route>
                  <destination-prefix>0.0.0.0/0</destination-prefix>
                  <next-hop>
                    <next-hop-address>192.0.2.2</next-hop-address>
                  </next-hop>
                </route>
              </ietf-ipv4-unicast-routing:ipv4>
              <ietf-ipv6-unicast-routing:ipv6>
                <route>
                  <destination-prefix>::/0</destination-prefix>
                  <next-hop>
                    <next-hop-address>2001:db8:0:1::2</next-hop-address>
                  </next-hop>
                </route>
              </ietf-ipv6-unicast-routing:ipv6>
            </static-routes>
          </control-plane-protocol>
        </control-plane-protocols>
        
        <ribs>
          <rib or:origin="or:intended">
            <name>ipv4-master</name>
            <address-family>
              ietf-ipv4-unicast-routing:ipv4-unicast
            </address-family>
            <default-rib>true</default-rib>
            <routes>
        
              <route>
                <ietf-ipv4-unicast-routing:destination-prefix>
                  192.0.2.1/24
                </ietf-ipv4-unicast-routing:destination-prefix>
                <next-hop>
                  <outgoing-interface>eth0</outgoing-interface>
                </next-hop>
                <route-preference>0</route-preference>
                <source-protocol>ietf-routing:direct</source-protocol>
                <last-updated>2015-10-24T17:11:27+02:00</last-updated>
              </route>
              <route>
                <ietf-ipv4-unicast-routing:destination-prefix>
                  198.51.100.0/24
                </ietf-ipv4-unicast-routing:destination-prefix>
                <next-hop>
                  <outgoing-interface>eth1</outgoing-interface>
                </next-hop>
                <route-preference>0</route-preference>
                <source-protocol>ietf-routing:direct</source-protocol>
                <last-updated>2015-10-24T17:11:27+02:00</last-updated>
              </route>
              <route>
                <ietf-ipv4-unicast-routing:destination-prefix>0.0.0.0/0
                </ietf-ipv4-unicast-routing:destination-prefix>
                <next-hop>
                  <ietf-ipv4-unicast-routing:next-hop-address>192.0.2.2
                  </ietf-ipv4-unicast-routing:next-hop-address>
                </next-hop>
                <route-preference>5</route-preference>
                <source-protocol>ietf-routing:static</source-protocol>
                <last-updated>2015-10-24T18:02:45+02:00</last-updated>
              </route>
            </routes>
          </rib>
          <rib or:origin="or:intended">
            <name>ipv6-master</name>
            <address-family>
              ietf-ipv6-unicast-routing:ipv6-unicast
            </address-family>
            <default-rib>true</default-rib>
            <routes>
              <route>
                <ietf-ipv6-unicast-routing:destination-prefix>
                  2001:db8:0:1::/64
                </ietf-ipv6-unicast-routing:destination-prefix>
                <next-hop>
                  <outgoing-interface>eth0</outgoing-interface>
        
                </next-hop>
                <route-preference>0</route-preference>
                <source-protocol>ietf-routing:direct</source-protocol>
                <last-updated>2015-10-24T17:11:27+02:00</last-updated>
              </route>
              <route>
                <ietf-ipv6-unicast-routing:destination-prefix>
                  2001:db8:0:2::/64
                </ietf-ipv6-unicast-routing:destination-prefix>
                <next-hop>
                  <outgoing-interface>eth1</outgoing-interface>
                </next-hop>
                <route-preference>0</route-preference>
                <source-protocol>ietf-routing:direct</source-protocol>
                <last-updated>2015-10-24T17:11:27+02:00</last-updated>
              </route>
              <route>
                <ietf-ipv6-unicast-routing:destination-prefix>::/0
                </ietf-ipv6-unicast-routing:destination-prefix>
                <next-hop>
                  <ietf-ipv6-unicast-routing:next-hop-address>
                    2001:db8:0:1::2
                  </ietf-ipv6-unicast-routing:next-hop-address>
                </next-hop>
                <route-preference>5</route-preference>
                <source-protocol>ietf-routing:static</source-protocol>
                <last-updated>2015-10-24T18:02:45+02:00</last-updated>
              </route>
            </routes>
          </rib>
        </ribs>
      </routing>
    </data>
   </rpc-reply>
        

Acknowledgments

謝辞

The authors wish to thank Nitin Bahadur, Martin Bjorklund, Dean Bogdanovic, Joe Clarke, Francis Dupont, Jeff Haas, Joel Halpern, Wes Hardaker, Jia He, Sriganesh Kini, Suresh Krishnan, David Lamparter, Xiang Li, Stephane Litkowski, Andrew McGregor, Jan Medved, Thomas Morin, Tom Petch, Bruno Rijsman, Juergen Schoenwaelder, Phil Shafer, Dave Thaler, Vladimir Vassilev, Rob Wilton, Yi Yang, Derek Man-Kit Yeung, and Jeffrey Zhang for their helpful comments and suggestions.

著者は、ニティン・バハドゥール、マーティン・ビョークルンド、ディーン・ボグダノビッチ、ジョー・クラーク、フランシス・デュポン、ジェフ・ハース、ジョエル・ハルパーン、ウェス・ハーダーカー、ジア・ヘ、スリガネシ・キニ、スレッシュ・クリシュナン、デビッド・ランパルター、シャン・リー、ステファン・リトコウスキー、アンドリュー・マックJan Medved、Thomas Morin、Tom Petch、Bruno Rijsman、Juergen Schoenwaelder、Phil Shafer、Dave Thaler、Vladimir Vassilev、Rob Wilton、Yi Yang、Derek Man-Kit Yeung、およびJeffrey Zhangの有益なコメントと提案。

Authors' Addresses

Authors' Addresses

Ladislav Lhotka CZ.NIC

ラディスラフ・ロトカCZ.NIC

   Email: lhotka@nic.cz
        

Acee Lindem Cisco Systems

Acee Lindem Cisco Systems

   Email: acee@cisco.com
        

Yingzhen Qu Huawei 2330 Central Expressway Santa Clara, CA 95050 United States of America

Yingzhen Qu Huawei 2330 Central Expressway Santa Clara, CA 95050 United States of America

   Email: yingzhen.qu@huawei.com