Additional negotiation in the TCP Timestamp Option field during the TCP handshake

The information below is for an old version of the document
Document Type Expired Internet-Draft (individual)
Last updated 2012-05-03 (latest revision 2011-10-31)
Stream (None)
Intended RFC status (None)
Expired & archived
pdf htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


A number of TCP enhancements in so diverse fields as congestion control, loss recovery or side-band signaling could be improved by allowing both ends of a TCP session to interpret the values carried in the Timestamp option. Further enhancements are enabled by changing the receiver side processing of timestamps in the presence of Selective Acknowledgements. This documents updates RFC1323 and specifies a backwards compatible way of negotiating for Timestamp capabilities, and lists a number of benefits and drawbacks of this approach.


Mirja K├╝hlewind (
Richard Scheffenegger (

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