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Solutions for BGP Persistent Route Oscillation (RFC7964)

IP.com Disclosure Number: IPCOM000247724D
Original Publication Date: 2016-Sep-01
Included in the Prior Art Database: 2016-Sep-30
Document File: 18 page(s) / 20K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

D. Walton: AUTHOR [+4]

Abstract

As documented in [RFC3345], routing information reduction by BGP Route Reflection [RFC4456] or BGP Confederation [RFC5065] can result in persistent Internal BGP (IBGP) route oscillations with certain routing setups and network topologies. Except for a couple of artificially engineered network topologies, the MULTI_EXIT_DISC (MED) attribute [RFC4271] has played a pivotal role in virtually all known persistent IBGP route oscillations. For the sake of brevity, we use the term "MED-induced route oscillation" hereafter to refer to a persistent IBGP route oscillation in which the MED plays a role.

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Internet Engineering Task Force (IETF)                         D. Walton Request for Comments: 7964                              Cumulus Networks Category: Standards Track                                      A. Retana ISSN: 2070-1721                                                  E. Chen                                                      Cisco Systems, Inc.                                                               J. Scudder                                                         Juniper Networks                                                           September 2016

              Solutions for BGP Persistent Route Oscillation

Abstract

   Routing information reduction by BGP Route Reflection or    Confederation can result in persistent internal BGP route    oscillations with certain routing setups and network topologies.    This document specifies two sets of additional paths that can be used    to eliminate these route oscillations in a network.

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 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/rfc7964.

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    (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.

Walton, et al.               Standards Track                    [Page 1]
 RFC 7964                BGP Oscillation Solutions         September 2016

 Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . ...