Connecting MPLS-SPRING Islands over IP Networks
draft-xu-spring-islands-connection-over-ip-01

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Network Working Group                                              X. Xu
Internet-Draft                                                    Huawei
Intended status: Informational                              S. Sivabalan
Expires: February 5, 2015                                          Cisco
                                                               R. Raszuk
                                                              Individual
                                                             U. Chunduri
                                                                Ericsson
                                                         V. Lopezalvarez
                                                              Telefonica
                                                          August 4, 2014

            Connecting MPLS-SPRING Islands over IP Networks
             draft-xu-spring-islands-connection-over-ip-01

Abstract

   MPLS-SPRING is a 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 using stacked MPLS labels.  The
   current MPLS-SRPING architecture requires an end-to-end MPLS Label
   Switched Path (LSP) between any two MPLS-SPRING-enabled routers
   (e.g., two adjacent hops of a given explicit path).  In order to
   enable MPLS-SPRING-enabled routers to be deployed even when there are
   non-MPLS routers along the path between two MPLS-SPRING-enabled
   routers, it is desirable to have an alternative, which allows the use
   of IP-based tunnels (e.g., GRE tunnels) to connect two MPLS-SPRING-
   enabled routers.  This document describes a mechanism for such usage.

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   This Internet-Draft will expire on February 5, 2015.

Xu, et al.              Expires February 5, 2015                [Page 1]
Internet-Draft                                               August 2014

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Packet Forwarding Procedures  . . . . . . . . . . . . . . . .   3
   4.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   3
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   4
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   4
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   4
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   4
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   4

1.  Introduction

   MPLS-SPRING [I-D.gredler-spring-mpls]
   [I-D.filsfils-spring-segment-routing-mpls] is a 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
   using stacked MPLS labels.  The current MPLS-SRPING architecture
   requires an end-to-end MPLS Label Switched Path (LSP) between any two
   MPLS-SPRING-enabled routers (e.g., two adjacent hops of a given
   explicit path).  In order to enable MPLS-SPRING-enabled routers to be
   deployed even when there are non-MPLS routers along the path between
   two MPLS-SPRING-enabled routers, it is desirable to have an
   alternative, which allows the use of IP-based tunnels (e.g., GRE
   tunnels [RFC4023] or UDP tunnels [I-D.ietf-mpls-in-udp]) to connect
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