Compressed SRv6 Segment List Encoding in SRH
draft-filsfilscheng-spring-srv6-srh-comp-sl-enc-02

Document Type Active Internet-Draft (individual)
Authors Weiqiang Cheng  , Clarence Filsfils  , Zhenbin Li  , Dezhong Cai  , Daniel Voyer  , Francois Clad  , Shay Zadok  , Jim Guichard  , Liu Aihua 
Last updated 2020-11-17
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SPRING                                                     W. Cheng, Ed.
Internet-Draft                                              China Mobile
Intended status: Standards Track                             C. Filsfils
Expires: 21 May 2021                                 Cisco Systems, Inc.
                                                                   Z. Li
                                                     Huawei Technologies
                                                                  D. Cai
                                                                 Alibaba
                                                                D. Voyer
                                                             Bell Canada
                                                            F. Clad, Ed.
                                                     Cisco Systems, Inc.
                                                                S. Zadok
                                                                Broadcom
                                                             J. Guichard
                                             Futurewei Technologies Ltd.
                                                                L. Aihua
                                                         ZTE Corporation
                                                        17 November 2020

              Compressed SRv6 Segment List Encoding in SRH
           draft-filsfilscheng-spring-srv6-srh-comp-sl-enc-02

Abstract

   This document defines a compressed SRv6 Segment List Encoding in the
   SRH.  This solution does not require any SRH data plane change nor
   any SRv6 control plane change.  This solution leverages the SRv6
   Network Programming model.

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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   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 21 May 2021.

Cheng, et al.              Expires 21 May 2021                  [Page 1]
Internet-Draft    SRv6 Segment List Compression in SRH     November 2020

Copyright Notice

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

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   Please review these documents carefully, as they describe your rights
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Basic Concepts  . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  SR Endpoint Flavors . . . . . . . . . . . . . . . . . . . . .   4
     4.1.  NEXT-C-SID Flavor . . . . . . . . . . . . . . . . . . . .   5
     4.2.  REPLACE-C-SID Flavor  . . . . . . . . . . . . . . . . . .   6
     4.3.  Combined NEXT-and-REPLACE-C-SID Flavor  . . . . . . . . .   6
   5.  GIB, LIB, global C-SID and local C-SID  . . . . . . . . . . .   8
     5.1.  Global C-SID  . . . . . . . . . . . . . . . . . . . . . .   8
     5.2.  Local C-SID . . . . . . . . . . . . . . . . . . . . . . .   8
   6.  C-SID and Block Length  . . . . . . . . . . . . . . . . . . .   9
     6.1.  C-SID Length  . . . . . . . . . . . . . . . . . . . . . .   9
     6.2.  Block Length  . . . . . . . . . . . . . . . . . . . . . .   9
     6.3.  GIB/LIB Usage . . . . . . . . . . . . . . . . . . . . . .   9
   7.  Efficient SID-list Encoding . . . . . . . . . . . . . . . . .  10
   8.  Control Plane . . . . . . . . . . . . . . . . . . . . . . . .  10
   9.  Illustrations . . . . . . . . . . . . . . . . . . . . . . . .  10
   10. Interoperability Status . . . . . . . . . . . . . . . . . . .  10
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  10
   12. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  10
   13. References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     13.1.  Normative References . . . . . . . . . . . . . . . . . .  11
     13.2.  Informative References . . . . . . . . . . . . . . . . .  11
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