Compressed BGP Update Message
draft-przygienda-idr-compressed-updates-03

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Last updated 2017-08-28
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Network Working Group                                      A. Przygienda
Internet-Draft                                                   Juniper
Intended status: Standards Track                              A. Lingala
Expires: March 1, 2018                                              AT&T
                                                                 C. Mate
                                                          NIIF/Hungarnet
                                                             J. Tantsura
                                              Futurewei Technologies Inc
                                                         August 28, 2017

                     Compressed BGP Update Message
               draft-przygienda-idr-compressed-updates-03

Abstract

   This document provides specification of an optional compressed BGP
   update message format to allow family independent reduction in BGP
   control traffic volume.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

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 March 1, 2018.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Przygienda, et al.        Expires March 1, 2018                 [Page 1]
Internet-Draft draft-przygienda-idr-compressed-updates-03    August 2017

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   4
   4.  Procedures  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     4.1.  Decompression Capability Negotiation  . . . . . . . . . .   5
     4.2.  Compressed BGP Update Messages  . . . . . . . . . . . . .   5
     4.3.  Compressor Overflow . . . . . . . . . . . . . . . . . . .   6
     4.4.  Compressor Restarts . . . . . . . . . . . . . . . . . . .   7
     4.5.  Error Handling  . . . . . . . . . . . . . . . . . . . . .   7
   5.  Special Considerations  . . . . . . . . . . . . . . . . . . .   7
     5.1.  Impact on Network Sniffing Tools  . . . . . . . . . . . .   7
   6.  Packet Formats  . . . . . . . . . . . . . . . . . . . . . . .   8
     6.1.  Decompressor Capability . . . . . . . . . . . . . . . . .   8
     6.2.  Compressed Update Messages  . . . . . . . . . . . . . . .   8
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  10
   9.  Normative References  . . . . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   BGP as a protocol evolved over the years to carry larger and larger
   volumes of information and this trend seems to continue unabated.
   And while lots of the growth can be contributed to the advent of new
   address families spurred by [RFC2283], steady increase in attributes
   and their size amplifies this tendency.  Recently, even the same NLRI
   may be advertised multiple times by the means of ADD-PATH [RFC7911]
   extensions.  All those developments drive up the volume of
   information BGP needs to exchange to synchronize RIBs of the peers.

   Although BGP update format provides a simple "semantic" compression
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