RFC 8654: Extended Message Support for BGP
Recent RFCs 2019-10-25
Summary:
The BGP specification (RFC 4271) mandates a maximum BGP message size
of 4,096 octets. As BGP is extended to support new Address Family
Identifiers (AFIs), Subsequent AFIs (SAFIs), and other features,
there is a need to extend the maximum message size beyond 4,096
octets. This document updates the BGP specification by extending the
maximum message size from 4,096 octets to 65,535 octets for all
messages except for OPEN and KEEPALIVE messages.