Multihoming with IPv6-to-IPv6 Network Prefix Translation (NPTv6)
draft-bonica-v6-multihome-02

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INTAREA                                                   R. Bonica, Ed.
Internet-Draft                                          Juniper Networks
Updates: 6296 (if approved)                                     F. Baker
Intended status: Experimental                              Cisco Systems
Expires: June 13, 2012                                      M. Wasserman
                                                       Painless Security
                                                               G. Miller
                                                                 Verizon
                                                               W. Kumari
                                                            Google, Inc.
                                                       December 11, 2011

    Multihoming with IPv6-to-IPv6 Network Prefix Translation (NPTv6)
                      draft-bonica-v6-multihome-02

Abstract

   This memo describes an architecture for sites that are homed to
   multiple upstream providers.  The architecture described herein uses
   IPv6-to-IPv6 Network Prefix Translation (NPTv6) to achieve
   redundancy, transport-layer survivability, load sharing and address
   independence.

   This memo updates Section 2.4 of RFC 6296.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on June 13, 2012.

Copyright Notice

   Copyright (c) 2011 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Bonica, et al.            Expires June 13, 2012                 [Page 1]
Internet-Draft            Multihoming With NPT6            December 2011

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://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
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   include Simplified BSD License text as described in Section 4.e of
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  4
   2.  NPTv6 Deployment . . . . . . . . . . . . . . . . . . . . . . .  4
     2.1.  Topology . . . . . . . . . . . . . . . . . . . . . . . . .  5
     2.2.  Addressing . . . . . . . . . . . . . . . . . . . . . . . .  6
       2.2.1.  Upstream Provider Addressing . . . . . . . . . . . . .  6
       2.2.2.  Site Addressing  . . . . . . . . . . . . . . . . . . .  6
     2.3.  Address Translation  . . . . . . . . . . . . . . . . . . .  7
     2.4.  Domain Name System (DNS) . . . . . . . . . . . . . . . . .  8
     2.5.  Routing  . . . . . . . . . . . . . . . . . . . . . . . . .  8
     2.6.  Failure Detection and Recovery . . . . . . . . . . . . . .  9
     2.7.  Load Balancing . . . . . . . . . . . . . . . . . . . . . . 10
   3.  Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . 10
   4.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 11
   5.  Security Considerations  . . . . . . . . . . . . . . . . . . . 11
   6.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 11
   7.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 12
     7.1.  Normative References . . . . . . . . . . . . . . . . . . . 12
     7.2.  Informative References . . . . . . . . . . . . . . . . . . 12
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 13

Bonica, et al.            Expires June 13, 2012                 [Page 2]
Internet-Draft            Multihoming With NPT6            December 2011

1.  Introduction

   [RFC3582] establishes the following goals for IPv6 site multihoming:

         Redundancy - A site's ability to remain connected to the
         Internet, even when connectivity through one or more of its
         upstream providers fails.

         Transport-Layer Survivability - A site's ability to maintain
         transport-layer sessions across failover and restoration
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