The TCP Echo and TCP Echo Reply Options

Document Type Expired Internet-Draft (individual)
Authors Alexander Zimmermann  , Richard Scheffenegger  , Bob Briscoe 
Last updated 2016-01-01 (latest revision 2015-06-30)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document specifies the TCP Echo and TCP Echo Reply options. It provides a single field a TCP sender can use to store any type of data that a TCP receiver simply echo unmodified back. In contrast to the original TCP Echo and TCP Echo Reply options defined in RFC 1072 the options specified in this document have slightly different semantics and support a variable option length.


Alexander Zimmermann (
Richard Scheffenegger (
Bob Briscoe (

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