IS-IS Extensions to Support Transport Network Slices using Segment Routing
draft-zch-lsr-isis-network-slicing-05

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Last updated 2020-07-09
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Networking Working Group                                          Y. Zhu
Internet-Draft                                             China Telecom
Intended status: Standards Track                                 R. Chen
Expires: January 10, 2021                                        S. Peng
                                                         ZTE Corporation
                                                                  F. Qin
                                                            China Mobile
                                                           July 09, 2020

   IS-IS Extensions to Support Transport Network Slices using Segment
                                Routing
                 draft-zch-lsr-isis-network-slicing-05

Abstract

   [I-D.nsdt-teas-ns-framework] provides a framework of transport
   slices.

   This draft describes the IS-IS extensions required to support
   transport slices using Segment Routing.

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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   Internet-Drafts are draft documents valid for a maximum of six months
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   This Internet-Draft will expire on January 10, 2021.

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   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents

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   carefully, as they describe your rights and restrictions with respect
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions used in this document . . . . . . . . . . . . . .   3
   3.  Router Capabilities for TN-slice Identifier . . . . . . . . .   3
   4.  Advertising TN-slice Identifier as a new TE parameter of a
       link  . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   5.  Advertising TN-slice Identifier for L2 Bundle Member  . . . .   5
   6.  Advertising prefix-SID per TN-slice Identifier  . . . . . . .   5
   7.  Advertising Adjacency-SID per TN-slice Identifier . . . . . .   7
   8.  Advertising Adjacency-SID per TN-slice Identifier in LANs . .   8
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
     9.1.  Router Capabilities for TN-slice Identifier . . . . . . .   9
     9.2.  TN-slice Identifier list sub-TLV  . . . . . . . . . . . .   9
     9.3.  L2 Bundle Member TN-slice Identifier sub-TLV  . . . . . .   9
     9.4.  Prefix-SID for TN-slice Identifier sub-TLV  . . . . . . .  10
     9.5.  Adjacency-SID for TN-slice Identifier sub-TLV . . . . . .  10
     9.6.  LAN-Adj-SID for TN-slice Identifier sub-TLV . . . . . . .  10
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  10
   11. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  10
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     12.1.  Normative references . . . . . . . . . . . . . . . . . .  10
     12.2.  Informative references . . . . . . . . . . . . . . . . .  12
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

1.  Introduction

   [I-D.nsdt-teas-ns-framework] provides a framework for discussing
   transport slices.

   For a Transport Network, transport network slicing requires the
   underlying network to support partitioning of the network resources
   to provide the client with dedicated (private) networking, computing,
   and storage resources drawn from a shared pool.
   [I-D.peng-teas-network-slicing] defines a unified TN-slice identifier
   to indicate the topology, computing, storage resources of the
   dedicated virtual network for both intra-domain and inter-domain
   network slicing scenarios, and how to compute SR-BE or SR-TE path
   according to TN-slice Identifier combined with other creteria.

   This draft describes the IS-IS extensions required to distribute TN-
   slice Identifier(that is AII in this draft) information in an AS.

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