BGP-LS Extensions for Transport Slice over IPv6 Dataplane
draft-chen-idr-bgp-ls-transport-slice-srv6-01

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IDR                                                              R. chen
Internet-Draft                                                  sh. peng
Intended status: Standards Track                         ZTE Corporation
Expires: April 16, 2021                                 October 13, 2020

       BGP-LS Extensions for Transport Slice over IPv6 Dataplane
             draft-chen-idr-bgp-ls-transport-slice-srv6-01

Abstract

   [I-D.peng-teas-network-slicing]defines a unified TN-slice identifier,
   AII(administrative instance identifier), to indicate the topology,
   computing, storage resources of the dedicated virtual network for
   both intra-domain and inter-domain network slicing scenarios.  This
   draft defines extensions to BGP-LS protocol in order to advertise the
   information of the transport slice over IPv6 dataplane..

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on April 16, 2021.

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   Copyright (c) 2020 IETF Trust and the persons identified as the
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Internet-Draft     BGP-LS Extensions for TS over IPv6       October 2020

   the Trust Legal Provisions and are provided without warranty as
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   3
   3.  BGP-LS Extensions for transport slice over over IPv6
       dataplane . . . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Node Attributes . . . . . . . . . . . . . . . . . . . . . . .   3
     4.1.  SRv6 Node MSD Types . . . . . . . . . . . . . . . . . . .   3
     4.2.  Router Capabilities for TN-slice Identifier . . . . . . .   3
   5.  Link Attributes . . . . . . . . . . . . . . . . . . . . . . .   4
     5.1.  SRv6 End.X SID per TN-slice TLV . . . . . . . . . . . . .   5
     5.2.  SRv6 LAN End.X SID per TN-slice TLV . . . . . . . . . . .   6
   6.  Prefix Attributes . . . . . . . . . . . . . . . . . . . . . .   8
     6.1.  SRv6 Locator per TN-slice TLV . . . . . . . . . . . . . .   8
   7.  SRv6 SID NLRI . . . . . . . . . . . . . . . . . . . . . . . .   9
     7.1.  SRv6 SID per specific TN-slice  . . . . . . . . . . . . .   9
     7.2.  SID Attributes  . . . . . . . . . . . . . . . . . . . . .  10
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
     8.1.  BGP-LS TLVs . . . . . . . . . . . . . . . . . . . . . . .  10
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  11
   11. Normative References  . . . . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  13

1.  Introduction

   For a packet network, 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,
   AII(administrative instance 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 criteria.

   [I-D.peng-lsr-isis-network-slicing-srv6]describes the ISIS extensions
   required to support Packet Network Slicing over IPv6 dataplane.

   For SRv6 case, IPv6 address resource is directly used to represent
   SID, so that different IPv6 block could be allocated to different TN-
   slice.  There are two possible ways to advertise TN-slice specfic
   IPv6 block:

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