Network Working Group K. Patel
Internet-Draft Cisco Systems
Intended status: Standards Track R. Raszuk
Expires: June 21, 2013 NTT MCL Inc.
M. Djernaes
Juniper Networks
J. Dong
M. Chen
Huawei Technologies
December 18, 2012
IPv6 Extensions for Route Target Distribution
draft-ietf-idr-bgp-ipv6-rt-constrain-03
Abstract
The current route target distribution specification described in
RFC4684 defines Route Target NLRIs of maximum length of 12 bytes.
The IPv6 specific Route Target extended community is defined in
[RFC5701] as length of 20 bytes. Since the current specification
only supports prefixes of maximum length of 12 bytes, the lack of an
IPv6 specific Route Target reachability information may be a problem
when an operator wants to use this application in a pure IPv6
environment. This document defines an extension that allows BGP to
exchange longer length IPv6 Route Target prefixes.
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
Task Force (IETF). Note that other groups may also distribute
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Internet-Drafts are draft documents valid for a maximum of six months
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material or to cite them other than as "work in progress."
Patel, et al. Expires June 21, 2013 [Page 1]
Internet-Draft IPv6 Extensions for RT Distribution December 2012
This Internet-Draft will expire on June 21, 2013.
Copyright Notice
Copyright (c) 2012 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
(http://trustee.ietf.org/license-info) in effect on the date of
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include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. BGP IPv6 Constrained Route Target Capability . . . . . . . . . 4
3. IPv6 Constrained Route Target NLRI Advertisements . . . . . . . 4
4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 5
5. Security Considerations . . . . . . . . . . . . . . . . . . . . 5
6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 5
7. References . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7.1. Normative References . . . . . . . . . . . . . . . . . . . 5
7.2. Informative References . . . . . . . . . . . . . . . . . . 6
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 6
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1. Introduction
The current constrained route distribution specification defined in
[RFC4684] supports prefixes with a maximum length of 12 bytes. The
prefix length needs to be extended to support the IPv6 specific Route
Target extended community defined in [RFC5701] which is 20 bytes in
datatracker.ietf.org