RFC 9827

Renaming the Extended Sequence Numbers (ESN) Transform Type in the Internet Key Exchange Protocol Version 2 (IKEv2), November 2025

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Also available: XML file for editing
 
Status:
PROPOSED STANDARD
Updates:
RFC 7296
Author:
V. Smyslov
Stream:
IETF
Source:
ipsecme (sec)

Cite this RFC: TXT  |  XML  |   BibTeX

DOI:  https://doi.org/10.17487/RFC9827

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Abstract

This document clarifies and extends the meaning of Transform Type 5 in Internet Key Exchange Protocol Version 2 (IKEv2). It updates RFC 7296 by renaming Transform Type 5 from "Extended Sequence Numbers (ESN)" to "Sequence Numbers (SN)". It also renames two currently defined values for this Transform Type: value 0 from "No Extended Sequence Numbers" to "32-bit Sequential Numbers" and value 1 from "Extended Sequence Numbers" to "Partially Transmitted 64-bit Sequential Numbers".


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.




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