SRv6 Network Programming
draft-filsfils-spring-srv6-network-programming-06

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Last updated 2018-10-22
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SPRING                                                       C. Filsfils
Internet-Draft                                         P. Camarillo, Ed.
Intended status: Standards Track                     Cisco Systems, Inc.
Expires: April 25, 2019                                         J. Leddy
                                                                 Comcast
                                                                D. Voyer
                                                             Bell Canada
                                                           S. Matsushima
                                                                SoftBank
                                                                   Z. Li
                                                     Huawei Technologies
                                                        October 22, 2018

                        SRv6 Network Programming
           draft-filsfils-spring-srv6-network-programming-06

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", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

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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   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 April 25, 2019.

Filsfils, et al.         Expires April 25, 2019                 [Page 1]
Internet-Draft          SRv6 Network Programming            October 2018

Copyright Notice

   Copyright (c) 2018 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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  SRv6 Segment  . . . . . . . . . . . . . . . . . . . . . . . .   6
   4.  Functions associated with a SID . . . . . . . . . . . . . . .   8
     4.1.  End: Endpoint . . . . . . . . . . . . . . . . . . . . . .   9
     4.2.  End.X: Layer-3 cross-connect  . . . . . . . . . . . . . .   9
     4.3.  End.T: Specific IPv6 table lookup . . . . . . . . . . . .  10
     4.4.  End.DX2: Decapsulation and L2 cross-connect . . . . . . .  11
     4.5.  End.DX2V: Decapsulation and VLAN L2 table lookup  . . . .  11
     4.6.  End.DT2U: Decapsulation and unicast MAC L2 table lookup .  12
     4.7.  End.DT2M: Decapsulation and L2 table flooding . . . . . .  13
     4.8.  End.DX6: Decapsulation and IPv6 cross-connect . . . . . .  14
     4.9.  End.DX4: Decapsulation and IPv4 cross-connect . . . . . .  14
     4.10. End.DT6: Decapsulation and specific IPv6 table lookup . .  15
     4.11. End.DT4: Decapsulation and specific IPv4 table lookup . .  16
     4.12. End.DT46: Decapsulation and specific IP table lookup  . .  16
     4.13. End.B6.Insert: Endpoint bound to an SRv6 policy . . . . .  17
     4.14. End.B6.Insert.Red: [...] with reduced SRH insertion . . .  18
     4.15. End.B6.Encaps: Endpoint bound to an SRv6 policy w/ encaps  18
     4.16. End.B6.Encaps.Red: [...] with reduced SRH insertion . . .  19
     4.17. End.BM: Endpoint bound to an SR-MPLS policy . . . . . . .  19
     4.18. End.S: Endpoint in search of a target in table T  . . . .  19
     4.19. SR-aware application  . . . . . . . . . . . . . . . . . .  20
     4.20. Non SR-aware application  . . . . . . . . . . . . . . . .  20
     4.21. Flavours  . . . . . . . . . . . . . . . . . . . . . . . .  21
       4.21.1.  PSP: Penultimate Segment Pop of the SRH  . . . . . .  21
       4.21.2.  USP: Ultimate Segment Pop of the SRH . . . . . . . .  21
   5.  Transit behaviors . . . . . . . . . . . . . . . . . . . . . .  22
     5.1.  T: Transit behavior . . . . . . . . . . . . . . . . . . .  22
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