TCP ESN: Extended Sequence Numbers for TCP

Document Type Expired Internet-Draft (individual)
Authors Marcelo Bagnulo  , Yoshifumi Nishida 
Last updated 2018-04-19 (latest revision 2017-09-29)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This note defines the Extended Sequence Number (ESN) experimental modification to TCP to increase TCP's sequence number using the TimeStamp (TS) option. It also modifies the Window Scale (WS) option to support larger receiver window enable by the extended sequence number space. At this stage, the purpose of this document is to discuss different design choices to generate discussion about the approach to follow.


Marcelo Bagnulo (
Yoshifumi Nishida (

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