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Aggregated Option for SYN Option Space Extension

Document Type Expired Internet-Draft (individual)
Expired & archived
Author Yoshifumi Nishida
Last updated 2024-01-06 (Latest revision 2023-07-05)
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
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This Internet-Draft is no longer active.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 option space is scarce resource as its maximum length is limited to 40 bytes. This limitation becomes more significant in SYN segments as all options used in a connection should be exchanged during SYN negotiations. This document proposes a new SYN option negotiation scheme that can aggregate multiple TCP options in SYN segments into a single option so that more options can be negotiate during 3-way handshake. With its simple design, the approach does not require fundamental changes in TCP.


Yoshifumi Nishida

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