Extended Optional Parameters Length for BGP OPEN Message
Cisco Systems
Juniper Networks
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.