A Data Model for Network Topologies
draft-ietf-i2rs-yang-network-topo-03

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Last updated 2016-06-09
Replaces draft-clemm-i2rs-yang-network-topo
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Network Working Group                                           A. Clemm
Internet-Draft                                                 J. Medved
Intended status: Standards Track                                R. Varga
Expires: December 11, 2016                                     T. Tkacik
                                                                   Cisco
                                                              N. Bahadur
                                                       Bracket Computing
                                                      H. Ananthakrishnan
                                                           Packet Design
                                                                  X. Liu
                                                     Kuatro Technologies
                                                            June 9, 2016

                  A Data Model for Network Topologies
                draft-ietf-i2rs-yang-network-topo-03.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

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Clemm, et al.           Expires December 11, 2016               [Page 1]
Internet-Draft  draft-ietf-i2rs-yang-network-topo-03.txt       June 2016

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Definitions and Acronyms  . . . . . . . . . . . . . . . . . .   7
   3.  Model Structure Details . . . . . . . . . . . . . . . . . . .   7
     3.1.  Base Network Model  . . . . . . . . . . . . . . . . . . .   7
     3.2.  Base Network Topology Model . . . . . . . . . . . . . . .  10
     3.3.  Extending the model . . . . . . . . . . . . . . . . . . .  11
     3.4.  Discussion and selected design decisions  . . . . . . . .  12
       3.4.1.  Container structure . . . . . . . . . . . . . . . . .  12
       3.4.2.  Underlay hierarchies and mappings . . . . . . . . . .  12
       3.4.3.  Dealing with changes in underlay networks . . . . . .  13
       3.4.4.  Use of groupings  . . . . . . . . . . . . . . . . . .  13
       3.4.5.  Cardinality and directionality of links . . . . . . .  13
       3.4.6.  Multihoming and link aggregation  . . . . . . . . . .  14
       3.4.7.  Mapping redundancy  . . . . . . . . . . . . . . . . .  14
       3.4.8.  Typing  . . . . . . . . . . . . . . . . . . . . . . .  14
       3.4.9.  Representing the same device in multiple networks . .  14
     3.5.  Open Issues . . . . . . . . . . . . . . . . . . . . . . .  15
       3.5.1.  Supporting client as well as server provided network
               topology  . . . . . . . . . . . . . . . . . . . . . .  16
       3.5.2.  Identifiers of string or URI type . . . . . . . . . .  17
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