SRv6 Network Programming
draft-ietf-spring-srv6-network-programming-02

Document Type Active Internet-Draft (spring WG)
Last updated 2019-09-20
Replaces draft-filsfils-spring-srv6-network-programming
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SPRING                                                  C. Filsfils, Ed.
Internet-Draft                                         P. Camarillo, Ed.
Intended status: Standards Track                     Cisco Systems, Inc.
Expires: March 22, 2020                                         J. Leddy
                                                  Individual Contributor
                                                                D. Voyer
                                                             Bell Canada
                                                           S. Matsushima
                                                                SoftBank
                                                                   Z. Li
                                                     Huawei Technologies
                                                      September 19, 2019

                        SRv6 Network Programming
             draft-ietf-spring-srv6-network-programming-02

Abstract

   This document describes the SRv6 network programming concept and its
   most basic functions.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

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 March 22, 2020.

Filsfils, et al.         Expires March 22, 2020                 [Page 1]
Internet-Draft          SRv6 Network Programming          September 2019

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
   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  . . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  SRv6 SID  . . . . . . . . . . . . . . . . . . . . . . . . . .   5
     3.1.  SID format  . . . . . . . . . . . . . . . . . . . . . . .   6
     3.2.  SID reachability  . . . . . . . . . . . . . . . . . . . .   6
   4.  Behaviors associated with a SID . . . . . . . . . . . . . . .   8
     4.1.  End: Endpoint . . . . . . . . . . . . . . . . . . . . . .   9
     4.2.  End.X: Layer-3 cross-connect  . . . . . . . . . . . . . .  10
     4.3.  End.T: Specific IPv6 table lookup . . . . . . . . . . . .  11
     4.4.  End.DX6: Decapsulation and IPv6 cross-connect . . . . . .  12
     4.5.  End.DX4: Decapsulation and IPv4 cross-connect . . . . . .  13
     4.6.  End.DT6: Decapsulation and specific IPv6 table lookup . .  14
     4.7.  End.DT4: Decapsulation and specific IPv4 table lookup . .  15
     4.8.  End.DT46: Decapsulation and specific IP table lookup  . .  16
     4.9.  End.DX2: Decapsulation and L2 cross-connect . . . . . . .  17
     4.10. End.DX2V: Decapsulation and VLAN L2 table lookup  . . . .  18
     4.11. End.DT2U: Decapsulation and unicast MAC L2 table lookup .  19
     4.12. End.DT2M: Decapsulation and L2 table flooding . . . . . .  19
     4.13. End.B6.Insert: Endpoint bound to an SRv6 policy . . . . .  20
     4.14. End.B6.Insert.Red: [...] with reduced SRH . . . . . . . .  21
     4.15. End.B6.Encaps: Endpoint bound to an SRv6 policy w/ encaps  22
     4.16. End.B6.Encaps.Red: [...] with reduced SRH . . . . . . . .  23
     4.17. End.BM: Endpoint bound to an SR-MPLS policy . . . . . . .  23
     4.18. Flavors . . . . . . . . . . . . . . . . . . . . . . . . .  25
       4.18.1.  PSP: Penultimate Segment Pop of the SRH  . . . . . .  25
       4.18.2.  USP: Ultimate Segment Pop of the SRH . . . . . . . .  25
       4.18.3.  USD: Ultimate Segment Decapsulation  . . . . . . . .  25
   5.  Transit behaviors . . . . . . . . . . . . . . . . . . . . . .  27
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