Unified Source Routing Instructions using MPLS Label Stack
draft-xu-mpls-unified-source-routing-instruction-03

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Last updated 2017-08-10
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Network Working Group                                              X. Xu
Internet-Draft                                                    Huawei
Intended status: Standards Track                             C. Filsfils
Expires: February 11, 2018                                   A. Bashandy
                                                                   Cisco
                                                               R. Raszuk
                                                            Bloomberg LP
                                                             U. Chunduri
                                                                  Huawei
                                                            L. Contreras
                                                          Telefonica I+D
                                                                L. Jalil
                                                                 Verizon
                                                            H. Assarpour
                                                                Broadcom
                                                         G. Van De Velde
                                                                   Nokia
                                                             J. Tantsura
                                                              Individual
                                                                   S. Ma
                                                                 Juniper
                                                              T. Mizrahi
                                                                 Marvell
                                                         August 10, 2017

       Unified Source Routing Instructions using MPLS Label Stack
          draft-xu-mpls-unified-source-routing-instruction-03

Abstract

   MPLS Segment Routing (SR-MPLS in short) is an MPLS data plane-based
   source routing paradigm in which a sender of a packet is allowed to
   partially or completely specify the route the packet takes through
   the network by imposing stacked MPLS labels to the packet.  SR-MPLS
   could be leveraged to realize a unified source routing mechanism
   across MPLS, IPv4 and IPv6 data planes by using an MPLS label stack
   as a unified source routing instruction set while preserving backward
   compatibility with SR-MPLS.

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

Xu, et al.              Expires February 11, 2018               [Page 1]
Internet-Draft                     USR                       August 2017

   working documents as Internet-Drafts.  The list of current Internet-
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   This Internet-Draft will expire on February 11, 2018.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Use Cases . . . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Packet Forwarding Procedures  . . . . . . . . . . . . . . . .   4
     4.1.  Forwarding Entry Construction . . . . . . . . . . . . . .   5
     4.2.  Packet Forwarding Procedures  . . . . . . . . . . . . . .   6
   5.  Signalling Considerations . . . . . . . . . . . . . . . . . .   9
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   9
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
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