YANG Data Model for RIB Extensions
draft-acee-rtgwg-yang-rib-extend-00

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Network Working Group                                          A. Lindem
Internet-Draft                                                     Y. Qu
Intended status: Standards Track                           Cisco Systems
Expires: April 18, 2016                                 October 16, 2015

                   YANG Data Model for RIB Extensions
                draft-acee-rtgwg-yang-rib-extend-00.txt

Abstract

   The Routing Information Base (RIB) is a list of routes and their
   corresponding administrative data and operational state.

   The document [ROUTING-CFG] defines the basic building blocks for RIB,
   and this model augments it to support multiple next-hops (aka, paths)
   for each route as well as additional attributes.

Status of This Memo

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   This Internet-Draft will expire on April 18, 2016.

Copyright Notice

   Copyright (c) 2015 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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   include Simplified BSD License text as described in Section 4.e of

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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Notation . . . . . . . . . . . . . . . . . .   2
   2.  Design of the Model . . . . . . . . . . . . . . . . . . . . .   2
     2.1.  RIB next-hop dampening  . . . . . . . . . . . . . . . . .   3
     2.2.  Multiple next-hops  . . . . . . . . . . . . . . . . . . .   3
     2.3.  Repair path . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  RIB Extensions Model Tree . . . . . . . . . . . . . . . . . .   3
   4.  RIB Extensions YANG Model . . . . . . . . . . . . . . . . . .   5
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .  11
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  11
   Appendix A.  Acknowledgments  . . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   This document defines a YANG, [YANG], data model which extends the
   generic data model for RIB by augmenting the ietf-routing model as
   defined in [ROUTING-CFG].

   RIB is a collection of best routes from all routing protocols.
   Within a protocol routes are selected based on the metrics in use by
   that protocol, and the protocol install its best routes to RIB.  RIB
   selects the best route by comparing the route preference (aka,
   administrative distance) of the associated protocol.

   The augmentations described herein extend the RIB to support multiple
   paths per route, route metrics, and administrative tags.

1.1.  Requirements Notation

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC-KEYWORDS].

2.  Design of the Model

   The YANG definitions in this document augment the ietf-routing model
   defined in [ROUTING-CFG], which provides a basis for routing system
   data model development.  Together with modules defined in

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   [ROUTING-CFG], a generic RIB Yang model is defined to implement and
   monitor RIB.

   The models in [ROUTING-CFG] also define the basic configuration and
   operational state for both IPv4 and IPv6 static routes and this
   document also provides augmentations for static routes to support
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