Extended Optional Parameters Length for BGP OPEN Message

Document Type Replaced Internet-Draft (individual)
Authors Enke Chen  , John Scudder 
Last updated 2010-08-10 (latest revision 2010-02-10)
Replaced by draft-ietf-idr-ext-opt-param
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The Optional Parameters in the BGP OPEN message as defined in the base BGP specification are limited to 255 octets due to a one-octet length field. BGP Capabilities are carried in this field and may foreseeably exceed 255 octets in the future, leading to concern about this limitation. In this document we extend the BGP OPEN length field in a backward- compatible manner. The Parameter Length field of individual Optional Parameters is similarly extended.


Enke Chen (enkechen@cisco.com)
John Scudder (jgs@juniper.net)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)