Segment Routing Mapped To IPv6 (SRm6)
draft-bonica-spring-sr-mapped-six-00

Document Type Active Internet-Draft (individual)
Last updated 2019-11-19
Replaces draft-bonica-spring-srv6-plus
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SPRING Working Group                                           R. Bonica
Internet-Draft                                                  S. Hegde
Intended status: Standards Track                        Juniper Networks
Expires: May 22, 2020                                          Y. Kamite
                                          NTT Communications Corporation
                                                               A. Alston
                                                            D. Henriques
                                                          Liquid Telecom
                                                                L. Jalil
                                                                 Verizon
                                                              J. Halpern
                                                                Ericsson
                                                              J. Linkova
                                                                  Google
                                                                 G. Chen
                                                                   Baidu
                                                       November 19, 2019

                 Segment Routing Mapped To IPv6 (SRm6)
                  draft-bonica-spring-sr-mapped-six-00

Abstract

   This document describes Segment Routing mapped to IPv6 (SRm6).  SRm6
   is a Segment Routing (SR) solution that leverages IPv6.  It supports
   a wide variety of use-cases while remaining in strict compliance with
   IPv6 specifications.  SRm6 is optimized for ASIC-based forwarding
   devices that operate at high data rates.

Status of This Memo

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   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on May 22, 2020.

Bonica, et al.            Expires May 22, 2020                  [Page 1]
Internet-Draft                    SRm6                     November 2019

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Table of Contents

   1.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   4
   3.  Paths, Segments And Instructions  . . . . . . . . . . . . . .   5
   4.  Segment Types . . . . . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Adjacency Segments  . . . . . . . . . . . . . . . . . . .   6
     4.2.  Node Segments . . . . . . . . . . . . . . . . . . . . . .   7
     4.3.  Binding Segments  . . . . . . . . . . . . . . . . . . . .   7
   5.  Segment Identifiers (SID) . . . . . . . . . . . . . . . . . .   8
     5.1.  Range . . . . . . . . . . . . . . . . . . . . . . . . . .   9
     5.2.  Assigning SIDs to Adjacency  Segments . . . . . . . . . .  10
     5.3.  Assigning SIDs to Node Segments . . . . . . . . . . . . .  11
     5.4.  Assigning SIDs to Binding  Segments . . . . . . . . . . .  11
   6.  Service Instructions  . . . . . . . . . . . . . . . . . . . .  11
     6.1.  Per-Segment . . . . . . . . . . . . . . . . . . . . . . .  11
     6.2.  Per-Path  . . . . . . . . . . . . . . . . . . . . . . . .  12
   7.  The IPv6 Data Plane . . . . . . . . . . . . . . . . . . . . .  12
     7.1.  The Routing Header  . . . . . . . . . . . . . . . . . . .  13
     7.2.  The Destination Options Header  . . . . . . . . . . . . .  14
   8.  Control Plane . . . . . . . . . . . . . . . . . . . . . . . .  15
   9.  Differences Between SRv6 and SRm6 . . . . . . . . . . . . . .  15
     9.1.  Routing Header Size . . . . . . . . . . . . . . . . . . .  15
     9.2.  Decoupling of Topological and Service Instructions  . . .  17
     9.3.  Authentication  . . . . . . . . . . . . . . . . . . . . .  17
     9.4.  Traffic Engineering Capability  . . . . . . . . . . . . .  18
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