BGP ACCEPT_OWN Community Attribute
RFC 7611
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RFC - Proposed Standard
(August 2015; No errata)
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Last updated |
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2015-10-14
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Replaces |
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draft-pmohapat-l3vpn-acceptown-community
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IETF
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plain text
pdf
html
bibtex
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WG state
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Submitted to IESG for Publication
(wg milestones:
Nov 2013 - Submit specification...,
Nov 2014 - Submit specification...
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Document shepherd |
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Thomas Morin
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Shepherd write-up |
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Show
(last changed 2014-11-23)
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| IESG |
IESG state |
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RFC 7611 (Proposed Standard)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Alvaro Retana
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Send notices to |
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(None)
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| IANA |
IANA review state |
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Version Changed - Review Needed
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IANA action state |
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RFC-Ed-Ack
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Internet Engineering Task Force (IETF) J. Uttaro
Request for Comments: 7611 AT&T
Category: Standards Track P. Mohapatra
ISSN: 2070-1721 Sproute Networks
D. Smith
Cisco Systems
R. Raszuk
Mirantis Inc.
J. Scudder
Juniper Networks
August 2015
BGP ACCEPT_OWN Community Attribute
Abstract
Under certain conditions, it is desirable for a Border Gateway
Protocol (BGP) route reflector to be able to modify the Route Target
(RT) list of a Virtual Private Network (VPN) route that the route
reflector distributes, enabling the route reflector to control how a
route originated within one VPN Routing and Forwarding table (VRF) is
imported into other VRFs. This technique works effectively as long
as the VRF that exports the route is not on the same Provider Edge
(PE) router as the VRF(s) that imports the route. However, due to
the constraints of BGP, it does not work if the two are on the same
PE. This document describes a modification to BGP allowing this
technique to work when the VRFs are on the same PE and to be used in
a standard manner throughout an autonomous system.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc7611.
Uttaro, et al. Standards Track [Page 1]
RFC 7611 ACCEPT_OWN August 2015
Copyright Notice
Copyright (c) 2015 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
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
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.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 3
2. ACCEPT_OWN Community . . . . . . . . . . . . . . . . . . . . 3
2.1. Route Acceptance . . . . . . . . . . . . . . . . . . . . 3
2.2. Propagating ACCEPT_OWN between Address Families . . . . . 4
2.3. Configuration Control . . . . . . . . . . . . . . . . . . 4
3. Decision Process . . . . . . . . . . . . . . . . . . . . . . 4
4. Deployment Considerations . . . . . . . . . . . . . . . . . . 5
5. Other Applications . . . . . . . . . . . . . . . . . . . . . 5
6. Security Considerations . . . . . . . . . . . . . . . . . . . 5
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 5
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 6
8.1. Normative References . . . . . . . . . . . . . . . . . . 6
8.2. Informative References . . . . . . . . . . . . . . . . . 6
Appendix A. Local Extranet Application (Non-normative) . . . . . 7
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 8
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 8
1. Introduction
In certain scenarios, a BGP speaker may maintain multiple VRFs
[RFC4364]. Under certain conditions, it is desirable for a route
reflector to be able to modify the RT list of a VPN route that the
route reflector distributes, enabling the route reflector to control
how a route originated within one VRF is imported into other VRFs.
Though it is possible to perform such control directly on the
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