A Data Model for Network Topologies
draft-ietf-i2rs-yang-network-topo-14

Document Type Active Internet-Draft (i2rs WG)
Last updated 2017-07-12 (latest revision 2017-06-30)
Replaces draft-clemm-i2rs-yang-network-topo
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Stream WG state WG Consensus: Waiting for Write-Up (wg milestone: Dec 2016 - Request Publication ... )
Revised I-D Needed - Issue raised by AD, Revised I-D Needed - Issue raised by IESG
Document shepherd Susan Hares
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Network Working Group                                           A. Clemm
Internet-Draft                                                    Huawei
Intended status: Standards Track                               J. Medved
Expires: January 1, 2018                                           Cisco
                                                                R. Varga
                                               Pantheon Technologies SRO
                                                              N. Bahadur
                                                       Bracket Computing
                                                      H. Ananthakrishnan
                                                           Packet Design
                                                                  X. Liu
                                                                   Jabil
                                                           June 30, 2017

                  A Data Model for Network Topologies
                draft-ietf-i2rs-yang-network-topo-14.txt

Abstract

   This document defines an abstract (generic) YANG data model for
   network/service topologies and inventories.  The model serves as a
   base model which is augmented with technology-specific details in
   other, more specific topology and inventory models.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on January 1, 2018.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Clemm, et al.            Expires January 1, 2018                [Page 1]
Internet-Draft  draft-ietf-i2rs-yang-network-topo-14.txt       June 2017

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Key Words . . . . . . . . . . . . . . . . . . . . . . . . . .   7
   3.  Definitions and Acronyms  . . . . . . . . . . . . . . . . . .   8
   4.  Model Structure Details . . . . . . . . . . . . . . . . . . .   8
     4.1.  Base Network Model  . . . . . . . . . . . . . . . . . . .   8
     4.2.  Base Network Topology Model . . . . . . . . . . . . . . .  11
     4.3.  Extending the model . . . . . . . . . . . . . . . . . . .  12
     4.4.  Discussion and selected design decisions  . . . . . . . .  13
       4.4.1.  Container structure . . . . . . . . . . . . . . . . .  13
       4.4.2.  Underlay hierarchies and mappings . . . . . . . . . .  13
       4.4.3.  Dealing with changes in underlay networks . . . . . .  14
       4.4.4.  Use of groupings  . . . . . . . . . . . . . . . . . .  14
       4.4.5.  Cardinality and directionality of links . . . . . . .  15
       4.4.6.  Multihoming and link aggregation  . . . . . . . . . .  15
       4.4.7.  Mapping redundancy  . . . . . . . . . . . . . . . . .  15
       4.4.8.  Typing  . . . . . . . . . . . . . . . . . . . . . . .  15
       4.4.9.  Representing the same device in multiple networks . .  16
       4.4.10. Supporting client-configured and server-provided
               network topology  . . . . . . . . . . . . . . . . . .  17
       4.4.11. Identifiers of string or URI type . . . . . . . . . .  17
   5.  Interactions with Other YANG Modules  . . . . . . . . . . . .  18
   6.  YANG Modules  . . . . . . . . . . . . . . . . . . . . . . . .  18
     6.1.  Defining the Abstract Network: network.yang . . . . . . .  18
     6.2.  Creating Abstract Network Topology: network-topology.yang  23
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  29
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  30
   9.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  31
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