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TCP Extended Data Offset Option

Document Type Replaced Internet-Draft (individual)
Expired & archived
Authors Dr. Joseph D. Touch , Wesley Eddy
Last updated 2014-07-02
Replaced by draft-ietf-tcpm-tcp-edo
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-ietf-tcpm-tcp-edo
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


TCP segments include a Data Offset field to indicate space for TCP options, but the size of the field can limit the space available for complex options that have evolved. This document updates RFC 793 with an optional TCP extension to that space to support the use of multiple large options such as SACK with either TCP Multipath or TCP AO. It also explains why the initial SYN of a connection cannot be extending as a single segment.


Dr. Joseph D. Touch
Wesley Eddy

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