Generalized SRv6 Network Programming for SRv6 Compression
draft-cl-spring-generalized-srv6-for-cmpr-01

Document Type Active Internet-Draft (individual)
Authors Weiqiang Cheng  , Zhenbin Li  , Cheng Li  , Francois Clad  , Liu Aihua  , Chongfeng Xie  , Yisong Liu  , Shay Zadok 
Last updated 2020-05-19
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SPRING Working Group                                            W. Cheng
Internet-Draft                                              China Mobile
Intended status: Standards Track                                   Z. Li
Expires: November 21, 2020                                         C. Li
                                                     Huawei Technologies
                                                                 F. Clad
                                                      Cisco Systems, Inc
                                                                  A. Liu
                                                         ZTE Corporation
                                                                  C. Xie
                                                           China Telecom
                                                                  Y. Liu
                                                            China Mobile
                                                                S. Zadok
                                                                Broadcom
                                                            May 20, 2020

       Generalized SRv6 Network Programming for SRv6 Compression
              draft-cl-spring-generalized-srv6-for-cmpr-01

Abstract

   This document proposes Generalized Segment Routing over IPv6 (G-SRv6)
   Networking Programming for SRv6 compression.

   G-SRv6 can reduce the overhead of SRv6 by encoding the Generalized
   SIDs(G-SID) in SID list, and it also supports to program SRv6 SIDs
   and G-SIDs in a single SRH to support incremental deployment and
   smooth upgrade.

   G-SRv6 is fully compatible with SRv6 with no modification of SRH, no
   new address consumption, no new route creation, and even no
   modification of control plane.

   G-SRv6 for Compression is designed based on the Compressed SRv6
   Segment List Encoding in SRH
   [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc] framework.

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
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

Cheng, et al.           Expires November 21, 2020               [Page 1]
Internet-Draft               G-SRv6 for Cmpr                    May 2020

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on November 21, 2020.

Copyright Notice

   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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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Requirements Language . . . . . . . . . . . . . . . . . .   4
   3.  Concepts of G-SRv6  . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  G-SID . . . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.2.  G-SID Container . . . . . . . . . . . . . . . . . . . . .   5
     3.3.  G-SID Index . . . . . . . . . . . . . . . . . . . . . . .   6
     3.4.  COC Flavor  . . . . . . . . . . . . . . . . . . . . . . .   6
   4.  G-SRH . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
   5.  Packet Processing . . . . . . . . . . . . . . . . . . . . . .   9
   6.  Illustration  . . . . . . . . . . . . . . . . . . . . . . . .  10
   7.  Benefits  . . . . . . . . . . . . . . . . . . . . . . . . . .  12
   8.  Protocol Extensions Requirements  . . . . . . . . . . . . . .  13
     8.1.  Data Plane  . . . . . . . . . . . . . . . . . . . . . . .  13
     8.2.  Control Plane . . . . . . . . . . . . . . . . . . . . . .  14
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  15
   11. Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  15
   12. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  15
   13. References  . . . . . . . . . . . . . . . . . . . . . . . . .  15
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