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Shim6: Level 3 Multihoming Shim Protocol for IPv6 (RFC5533)

IP.com Disclosure Number: IPCOM000184288D
Original Publication Date: 2009-Jun-01
Included in the Prior Art Database: 2009-Jun-19

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

E. Nordmark: AUTHOR [+2]

Abstract

This document defines the Shim6 protocol, a layer 3 shim for providing locator agility below the transport protocols, so that multihoming can be provided for IPv6 with failover and load-sharing properties, without assuming that a multihomed site will have a provider-independent IPv6 address prefix announced in the global IPv6 routing table. The hosts in a site that has multiple provider- allocated IPv6 address prefixes will use the Shim6 protocol specified in this document to set up state with peer hosts so that the state can later be used to failover to a different locator pair, should the original one stop working.

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Network Working Group                                        E. Nordmark Request for Comments: 5533                              Sun Microsystems Category: Standards Track                                     M. Bagnulo                                                                     UC3M                                                                June 2009

            Shim6: Level 3 Multihoming Shim Protocol for IPv6

Status of This Memo

   This document specifies an Internet standards track protocol for the    Internet community, and requests discussion and suggestions for    improvements.  Please refer to the current edition of the "Internet    Official Protocol Standards" (STD 1) for the standardization state    and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (c) 2009 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 in effect on the date of    publication of this document (http://trustee.ietf.org/license-info).    Please review these documents carefully, as they describe your rights    and restrictions with respect to this document.

Abstract

   This document defines the Shim6 protocol, a layer 3 shim for    providing locator agility below the transport protocols, so that    multihoming can be provided for IPv6 with failover and load-sharing    properties, without assuming that a multihomed site will have a    provider-independent IPv6 address prefix announced in the global IPv6    routing table.  The hosts in a site that has multiple provider-    allocated IPv6 address prefixes will use the Shim6 protocol specified    in this document to set up state with peer hosts so that the state    can later be used to failover to a different locator pair, should the    original one stop working.

Nordmark & Bagnulo          Standards Track                     [Page 1]
 RFC 5533                     Shim6 Protocol                    June 2009

 Table of Contents

   1. Introduction ....................................................4

      1.1. Goals ......................................................5

      1.2. Non-Goals ..................................................5

      1.3. Locators as Upper-Layer Identifiers (ULID) .................6

      1.4. IP Multicast ...............................................7

      1.5. Renumbering Implications ...................................8

      1.6....