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

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Publisher: IETF
Doc Type: Standard
Pages: 8
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".
Publication Date: 2025-11-01
Status Note: Proposed Standard
DOI: 10.17487/RFC9827
Link: https://doi.org/10.17487/RFC9827
Author(s): Valery Smyslov
Keyword(s): Replay Protection, Anti-replay, IPSEC, ESP, AH

Latest version of IETF RFC 9827

Document Versions — IETF RFC 9827

▶ IETF RFC 9827 (2025-11-01)

THIS DOC [ACTIVE] [LATEST VERSION]

Normative Reference(s)

IANA, "Internet Key Exchange Version 2 (IKEv2) Parameters", <http://www.iana.org/assignments/ikev2-parameters>. EXTERNAL
IETF RFC 4301 [Active, Amended*]
IETF RFC 4302 [Active*]
IETF RFC 4303 [Active*]
IETF RFC 7296 [Active*]

Bibliographic Reference(s)

IETF.draft-ietf-ipsecme-eesp-02 — I-D.ietf-ipsecme-eesp EXTERNAL
IETF.draft-pan-ipsecme-anti-replay-notification-01 — I-D.pan-ipsecme-anti-replay-notification EXTERNAL
RFC8750 — RFC8750 EXTERNAL
RFC9347 — RFC9347 EXTERNAL
IETF RFC 9838 [Active*]

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IETF RFC 9827, Renaming the Extended Sequence Numbers (ESN) Transform Type in the Internet Key Exchange Protocol Version 2 (IKEv2). Available at https://doi.org/10.17487/RFC9827

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IETF RFC 9827, Renaming the Extended Sequence Numbers (ESN) Transform Type in the Internet Key Exchange Protocol Version 2 (IKEv2). Available at https://doi.org/10.17487/RFC9827

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IETF RFC 9827, Renaming the Extended Sequence Numbers (ESN) Transform Type in the Internet Key Exchange Protocol Version 2 (IKEv2). Available at https://doi.org/10.17487/RFC9827

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<span class="citation"><cite>IETF RFC 9827</cite>, Renaming the Extended Sequence Numbers (ESN) Transform Type in the Internet Key Exchange Protocol Version 2 (IKEv2). Available at <a href="https://doi.org/10.17487/RFC9827" target="_blank" rel="noopener">https://doi.org/10.17487/RFC9827</a></span>

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IETF RFC 9827, Renaming the Extended Sequence Numbers (ESN) Transform Type in the Internet Key Exchange Protocol Version 2 (IKEv2)
doi: 10.17487/RFC9827
url: https://doi.org/10.17487/RFC9827

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<li>
<cite id="bib-rfc9827">IETF RFC 9827</cite>, Renaming the Extended Sequence Numbers (ESN) Transform Type in the Internet Key Exchange Protocol Version 2 (IKEv2)
<span class="doi">10.17487/RFC9827</span>
</li>

Referenced By

IETF RFC 9838 [Active*]