Internet Exchange BGP Route Server Operations
draft-ietf-grow-ix-bgp-route-server-operations-05

Document Type Active Internet-Draft (grow WG)
Last updated 2015-10-14 (latest revision 2015-06-08)
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GROW Working Group                                           N. Hilliard
Internet-Draft                                                      INEX
Intended status: Informational                               E. Jasinska
Expires: December 10, 2015                                    BigWave IT
                                                               R. Raszuk
                                                           Mirantis Inc.
                                                               N. Bakker
                                                Akamai Technologies B.V.
                                                            June 8, 2015

             Internet Exchange BGP Route Server Operations
           draft-ietf-grow-ix-bgp-route-server-operations-05

Abstract

   The popularity of Internet exchange points (IXPs) brings new
   challenges to interconnecting networks.  While bilateral eBGP
   sessions between exchange participants were historically the most
   common means of exchanging reachability information over an IXP, the
   overhead associated with this interconnection method causes serious
   operational and administrative scaling problems for IXP participants.

   Multilateral interconnection using Internet route servers can
   dramatically reduce the administrative and operational overhead
   associated with connecting to IXPs; in some cases, route servers are
   used by IXP participants as their preferred means of exchanging
   routing information.

   This document describes operational considerations for multilateral
   interconnections at IXPs.

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
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   This Internet-Draft will expire on December 10, 2015.

Hilliard, et al.        Expires December 10, 2015               [Page 1]
Internet-Draft       IXP BGP Route Server Operations           June 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
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Notational Conventions  . . . . . . . . . . . . . . . . .   3
   2.  Bilateral BGP Sessions  . . . . . . . . . . . . . . . . . . .   3
   3.  Multilateral Interconnection  . . . . . . . . . . . . . . . .   4
   4.  Operational Considerations for Route Server Installations . .   5
     4.1.  Path Hiding . . . . . . . . . . . . . . . . . . . . . . .   5
     4.2.  Route Server Scaling  . . . . . . . . . . . . . . . . . .   6
       4.2.1.  Tackling Scaling Issues . . . . . . . . . . . . . . .   7
         4.2.1.1.  View Merging and Decomposition  . . . . . . . . .   7
         4.2.1.2.  Destination Splitting . . . . . . . . . . . . . .   8
         4.2.1.3.  NEXT_HOP Resolution . . . . . . . . . . . . . . .   8
     4.3.  Prefix Leakage Mitigation . . . . . . . . . . . . . . . .   8
     4.4.  Route Server Redundancy . . . . . . . . . . . . . . . . .   9
     4.5.  AS_PATH Consistency Check . . . . . . . . . . . . . . . .   9
     4.6.  Export Routing Policies . . . . . . . . . . . . . . . . .   9
       4.6.1.  BGP Communities . . . . . . . . . . . . . . . . . . .  10
       4.6.2.  Internet Routing Registries . . . . . . . . . . . . .  10
       4.6.3.  Client-accessible Databases . . . . . . . . . . . . .  10
     4.7.  Layer 2 Reachability Problems . . . . . . . . . . . . . .  10
     4.8.  BGP NEXT_HOP Hijacking  . . . . . . . . . . . . . . . . .  11
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   7.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  13
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