Use of BGP Large Communities
RFC 8195
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Type |
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RFC - Informational
(June 2017; No errata)
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Last updated |
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2017-06-30
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Replaces |
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draft-snijders-grow-large-communities-usage
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Stream |
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IETF
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plain text
pdf
html
bibtex
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Reviews |
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SECDIR
will not review this version
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WG state
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Submitted to IESG for Publication
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Document shepherd |
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Christopher Morrow
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Shepherd write-up |
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Show
(last changed 2017-03-23)
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| IESG |
IESG state |
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RFC 8195 (Informational)
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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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Warren Kumari
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Send notices to |
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Christopher Morrow <christopher.morrow@gmail.com>
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| IANA |
IANA review state |
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IANA OK - No Actions Needed
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IANA action state |
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No IC
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Internet Engineering Task Force (IETF) J. Snijders
Request for Comments: 8195 J. Heasley
Category: Informational NTT
ISSN: 2070-1721 M. Schmidt
i3D.net
June 2017
Use of BGP Large Communities
Abstract
This document presents examples and inspiration for operator
application of BGP Large Communities. Based on operational
experience with BGP Communities, this document suggests logical
categories of BGP Large Communities and demonstrates an orderly
manner of organizing community values within them to achieve typical
goals in routing policy. Any operator can consider using the
concepts presented as the basis for their own BGP Large Communities
repertoire.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
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). Not all documents
approved by the IESG are a candidate for any level of Internet
Standard; see Section 2 of RFC 7841.
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/rfc8195.
Snijders, et al. Informational [Page 1]
RFC 8195 Use of BGP Large Communities June 2017
Copyright Notice
Copyright (c) 2017 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 . . . . . . . . . . . . . . . . . . . . . . . . 3
2. The Design Overview . . . . . . . . . . . . . . . . . . . . . 3
2.1. Informational Communities . . . . . . . . . . . . . . . . 4
2.2. Action Communities . . . . . . . . . . . . . . . . . . . 5
3. Examples of Informational Communities . . . . . . . . . . . . 5
3.1. Location . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1.1. An ISO 3166-1 Numeric Function . . . . . . . . . . . 6
3.1.2. A UN M.49 Region Function . . . . . . . . . . . . . . 6
3.2. Relation Function . . . . . . . . . . . . . . . . . . . . 7
3.3. Combining Informational Communities . . . . . . . . . . . 7
4. Examples of Action Communities . . . . . . . . . . . . . . . 7
4.1. Selective NO_EXPORT . . . . . . . . . . . . . . . . . . . 7
4.1.1. ASN-Based Selective NO_EXPORT . . . . . . . . . . . . 8
4.1.2. Location-Based Selective NO_EXPORT . . . . . . . . . 8
4.2. Selective AS_PATH Prepending . . . . . . . . . . . . . . 9
4.2.1. ASN-Based Selective AS_PATH Prepending . . . . . . . 9
4.2.2. Location-Based Selective AS_PATH Prepending . . . . . 10
4.3. Manipulation of the LOCAL_PREF Attribute . . . . . . . . 10
4.3.1. Global Manipulation of LOCAL_PREF . . . . . . . . . . 11
4.3.2. Region-Based Manipulation of LOCAL_PREF . . . . . . . 11
4.3.3. Note of Caution for LOCAL_PREF Functions . . . . . . 12
4.4. Route Server Prefix Distribution Control . . . . . . . . 12
5. Security Considerations . . . . . . . . . . . . . . . . . . . 13
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 14
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.1. Normative References . . . . . . . . . . . . . . . . . . 14
7.2. Informative References . . . . . . . . . . . . . . . . . 14
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 15
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 15
Snijders, et al. Informational [Page 2]
RFC 8195 Use of BGP Large Communities June 2017
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