Use of BGP for dissemination of ILA mapping information
draft-lapukhov-bgp-ila-afi-02

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Inter-Domain Routing                                         P. Lapukhov
Internet-Draft                                                  Facebook
Intended status: Standards Track                        October 31, 2016
Expires: May 4, 2017

        Use of BGP for dissemination of ILA mapping information
                     draft-lapukhov-bgp-ila-afi-02

Abstract

   Identifier-Locator Addressing [I-D.herbert-nvo3-ila] relies on
   splitting the 128-bit IPv6 address into identifier and locator parts
   to implement identifier mobility, and network virtualization.  This
   document proposes a method for distributing the identifier to locator
   mapping information using Multiprotocol Extensions for BGP-4
   [RFC4760].

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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   This Internet-Draft will expire on May 4, 2017.

Copyright Notice

   Copyright (c) 2016 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

Lapukhov                   Expires May 4, 2017                  [Page 1]
Internet-Draft         draft-lapukhov-bgp-ila-afi           October 2016

   (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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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  BGP ILA AFI . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Capability Advertisement  . . . . . . . . . . . . . . . . . .   3
   4.  Disseminating Identifier-Locator mapping information  . . . .   3
     4.1.  Advertising ILA mapping information . . . . . . . . . . .   3
     4.2.  Withdrawing ILA mapping information . . . . . . . . . . .   4
   5.  Interpreting the mapping information  . . . . . . . . . . . .   4
     5.1.  Unicast SAFI  . . . . . . . . . . . . . . . . . . . . . .   4
     5.2.  Multicast SAFI  . . . . . . . . . . . . . . . . . . . . .   5
   6.  Inter-domain mapping exchange . . . . . . . . . . . . . . . .   5
   7.  BGP Next-Hop attribute handling with ILA  . . . . . . . . . .   6
   8.  Use of Add-Paths extension with ILA AFI . . . . . . . . . . .   7
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
   10. Manageability Considerations  . . . . . . . . . . . . . . . .   7
   11. Security Considerations . . . . . . . . . . . . . . . . . . .   8
   12. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   8
   13. References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     13.1.  Normative References . . . . . . . . . . . . . . . . . .   8
     13.2.  Informative References . . . . . . . . . . . . . . . . .   8
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   Under the ILA proposal, IPv6 address is split in 64-bit identifier
   (lower address bits) and locator (higher address bits) portions.  The
   locator part is determined dynamically from a mapping table that
   maintains associations between the location-independent identifiers
   and topologically significant locators.  The hosts that collectively
   implement and maintain such mappings are referred to as "ILA domain"
   in this document.  The ILA domain has a globally unique 64-bit SIR
   (Standard Identifier Representation) prefix assigned to it (see
   [I-D.herbert-nvo3-ila] for more details on SIR prefix use).

   This document proposes a new address family identifier (AFI) for the
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