Compressed SRv6 Segment List Encoding in SRH
draft-filsfilscheng-spring-srv6-srh-comp-sl-enc-01

Document Type Active Internet-Draft (individual)
Last updated 2020-05-19
Stream (None)
Intended RFC status (None)
Formats plain text xml pdf htmlized (tools) htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
SPRING                                                     W. Cheng, Ed.
Internet-Draft                                              China Mobile
Intended status: Standards Track                             C. Filsfils
Expires: November 20, 2020                           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
                                                            May 19, 2020

              Compressed SRv6 Segment List Encoding in SRH
           draft-filsfilscheng-spring-srv6-srh-comp-sl-enc-01

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
   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/.

   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 20, 2020.

Cheng, et al.           Expires November 20, 2020               [Page 1]
Internet-DraftCompressed SRv6 Segment List Encoding in SRH      May 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
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

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. Security Considerations . . . . . . . . . . . . . . . . . . .  10
   11. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  10
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  10
     12.2.  Informative References . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11
Show full document text