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IETF RFC 9601
[ACTIVE]

Propagating Explicit Congestion Notification across IP Tunnel Headers Separated by a Shim

Metadata

Publisher
IETF
Doc Type
Standard
Pages
19
Abstract
RFC 6040 on "Tunnelling of Explicit Congestion Notification" made the rules for propagation of Explicit Congestion Notification (ECN) consistent for all forms of IP-in-IP tunnel. This specification updates RFC 6040 to clarify that its scope includes tunnels where two IP headers are separated by at least one shim header that is not sufficient on its own for wide-area packet forwarding. It surveys widely deployed IP tunnelling protocols that use such shim headers and updates the specifications of those that do not mention ECN propagation (including RFCs 2661, 3931, 2784, 4380 and 7450, which specify L2TPv2, L2TPv3, Generic Routing Encapsulation (GRE), Teredo, and Automatic Multicast Tunneling (AMT), respectively). This specification also updates RFC 6040 with configuration requirements needed to make any legacy tunnel ingress safe.
Publication Date
2024-08-01
Status Note
Proposed Standard
DOI
10.17487/RFC9601
Link
https://doi.org/10.17487/RFC9601
Author(s)
Bob Briscoe
Keyword(s)
Congestion Control, Congestion Notification, Information Security, Tunnel, Protocol, ECN
Latest version of IETF RFC 9601

Document Versions — IETF RFC 9601

  • ▶ IETF RFC 9601 (2024-08-01)
    THIS DOC [ACTIVE] [LATEST VERSION]

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IETF RFC 9601, Propagating Explicit Congestion Notification across IP Tunnel Headers Separated by a Shim. Available at https://doi.org/10.17487/RFC9601
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IETF RFC 9601, Propagating Explicit Congestion Notification across IP Tunnel Headers Separated by a Shim. Available at https://doi.org/10.17487/RFC9601

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IETF RFC 9601, Propagating Explicit Congestion Notification across IP Tunnel Headers Separated by a Shim. Available at https://doi.org/10.17487/RFC9601
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<span class="citation"><cite>IETF RFC 9601</cite>, Propagating Explicit Congestion Notification across IP Tunnel Headers Separated by a Shim. Available at <a href="https://doi.org/10.17487/RFC9601" target="_blank" rel="noopener">https://doi.org/10.17487/RFC9601</a></span>

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IETF RFC 9601, Propagating Explicit Congestion Notification across IP Tunnel Headers Separated by a Shim
doi: 10.17487/RFC9601
url: https://doi.org/10.17487/RFC9601
Snippet:
<li>
<cite id="bib-rfc9601">IETF RFC 9601</cite>, Propagating Explicit Congestion Notification across IP Tunnel Headers Separated by a Shim
<span class="doi">10.17487/RFC9601</span>
</li>

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