The IPv6 Compressed Routing Header (CRH)
draft-bonica-6man-comp-rtg-hdr-08

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Last updated 2019-10-15
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6man                                                           R. Bonica
Internet-Draft                                          Juniper Networks
Intended status: Standards Track                               Y. Kamite
Expires: April 17, 2020                   NTT Communications Corporation
                                                                 T. Niwa
                                                                    KDDI
                                                               A. Alston
                                                            D. Henriques
                                                          Liquid Telecom
                                                                L. Jalil
                                                                 Verizon
                                                                   N. So
                                                                   F. Xu
                                                            Reliance Jio
                                                                 G. Chen
                                                                   Baidu
                                                                  Y. Zhu
                                                                 G. Yang
                                                           China Telecom
                                                                 Y. Zhou
                                                               ByteDance
                                                        October 15, 2019

                The IPv6 Compressed Routing Header (CRH)
                   draft-bonica-6man-comp-rtg-hdr-08

Abstract

   This document defines two new IPv6 Routing header types.
   Generically, they are called the Compressed Routing Header (CRH).
   More specifically, the 16-bit version of the CRH is called the CRH-
   16, while the 32-bit version of the CRH is called the CRH-32.  SRm6
   nodes use the CRH to steer packets from segment to segment along SRm6
   paths.

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
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   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

Bonica, et al.           Expires April 17, 2020                 [Page 1]
Internet-Draft       IPv6 Compressed Routing Header         October 2019

   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 April 17, 2020.

Copyright Notice

   Copyright (c) 2019 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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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   3
   3.  The Compressed Routing Header (CRH) . . . . . . . . . . . . .   3
   4.  The Segment Forwarding Information Base (SFIB)  . . . . . . .   4
   5.  Processing Rules  . . . . . . . . . . . . . . . . . . . . . .   5
     5.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .   5
     5.2.  CRH Specific  . . . . . . . . . . . . . . . . . . . . . .   6
       5.2.1.  Computing Minimum CRH Length  . . . . . . . . . . . .   7
       5.2.2.  Topological Instructions That Control Adjacency
               Segments  . . . . . . . . . . . . . . . . . . . . . .   8
       5.2.3.  Topological Instructions That Control Node Segments .   9
       5.2.4.  Topological Instructions That Control Binding
               Segments  . . . . . . . . . . . . . . . . . . . . . .   9
   6.  Mutability  . . . . . . . . . . . . . . . . . . . . . . . . .  10
   7.  Compliance  . . . . . . . . . . . . . . . . . . . . . . . . .  10
   8.  Management Considerations . . . . . . . . . . . . . . . . . .  10
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   11. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  11
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