Use of BGP Large Communities
draft-ietf-grow-large-communities-usage-05

Document Type Active Internet-Draft (grow WG)
Last updated 2017-03-27
Stream IETF
Intended RFC status Informational
Formats plain text xml pdf html bibtex
Stream WG state Submitted to IESG for Publication
Document shepherd Christopher Morrow
Shepherd write-up Show (last changed 2017-03-23)
IESG IESG state Publication Requested
Consensus Boilerplate Unknown
Telechat date
Responsible AD Joel Jaeggli
Send notices to Christopher Morrow <christopher.morrow@gmail.com>
Global Routing Operations                                    J. Snijders
Internet-Draft                                                J. Heasley
Intended status: Informational                                       NTT
Expires: September 28, 2017                                   M. Schmidt
                                                                 i3D.net
                                                          March 27, 2017

                      Use of BGP Large Communities
               draft-ietf-grow-large-communities-usage-05

Abstract

   Examples and inspiration for operators to use BGP Large Communities.

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on September 28, 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.

Snijders, et al.       Expires September 28, 2017               [Page 1]
Internet-Draft        Use of BGP Large Communities            March 2017

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  The Design Overview . . . . . . . . . . . . . . . . . . . . .   2
     2.1.  Informational Communities . . . . . . . . . . . . . . . .   4
     2.2.  Action Communities  . . . . . . . . . . . . . . . . . . .   4
   3.  Examples of Informational Communities . . . . . . . . . . . .   5
     3.1.  Location  . . . . . . . . . . . . . . . . . . . . . . . .   5
       3.1.1.  An ISO 3166-1 Numeric Function  . . . . . . . . . . .   5
       3.1.2.  An UN M.49 Region Function  . . . . . . . . . . . . .   5
     3.2.  Relation Function . . . . . . . . . . . . . . . . . . . .   6
     3.3.  Combining Informational Communities . . . . . . . . . . .   6
   4.  Examples of Action Communities  . . . . . . . . . . . . . . .   7
     4.1.  Selective NO_EXPORT . . . . . . . . . . . . . . . . . . .   7
       4.1.1.  ASN Based Selective NO_EXPORT . . . . . . . . . . . .   7
       4.1.2.  Location Based Selective NO_EXPORT  . . . . . . . . .   7
     4.2.  Selective AS_PATH Prepending  . . . . . . . . . . . . . .   8
       4.2.1.  ASN Based Selective AS_PATH Prepending  . . . . . . .   8
       4.2.2.  Location Based Selective AS_PATH Prepending . . . . .   9
     4.3.  Manipulation of the LOCAL_PREF Attribute  . . . . . . . .   9
       4.3.1.  Global Manipulation of LOCAL_PREF . . . . . . . . . .  10
       4.3.2.  Region Based Manipulation of LOCAL_PREF . . . . . . .  10
       4.3.3.  Note of Caution for LOCAL_PREF Functions  . . . . . .  11
     4.4.  Route Server Prefix Distribution Control  . . . . . . . .  11
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
   7.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  12
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  13
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  13
     8.3.  URIs  . . . . . . . . . . . . . . . . . . . . . . . . . .  13
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  13

1.  Introduction

   BGP Large Communities [RFC8092] provide a mechanism to signal opaque
   information between Autonomous Systems (ASs).  This document presents
   examples of how operators might utilize BGP Large Communities to
   achieve various goals.  This document draws on the experience of
   operator communities such as NANOG [1] and NLNOG [2].

2.  The Design Overview
Show full document text