Skip to main content

Extending the Space Available for TCP Options

Document Type Expired Internet-Draft (individual in tsv area)
Expired & archived
Authors Wesley Eddy , Adam Langley
Last updated 2015-10-14 (Latest revision 2008-07-01)
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Stream WG state (None)
Document shepherd (None)
IESG IESG state Expired (IESG: Dead)
Action Holders
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD Lars Eggert
Send notices to (None)

This Internet-Draft is no longer active.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


This document describes a method for increasing the space available for TCP options. Two new TCP options (LO and SLO) are detailed which reduce the limitations imposed by the TCP header's Data Offset field. The LO option provides this extension after connection establishment, and the SLO option aids in transmission of lengthy connection initialization and configuration options.


Wesley Eddy
Adam Langley

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