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BCP 89
RFC 9599
Title: Guidelines for Adding Congestion Notification
to Protocols that Encapsulate IP
Author: B. Briscoe,
J. Kaippallimalil
Status: Best Current Practice
Stream: IETF
Date: August 2024
Mailbox: [email protected],
[email protected]
Pages: 28
Updates: RFC 3819
See Also: BCP 89
I-D Tag: draft-ietf-tsvwg-ecn-encap-guidelines-22.txt
URL: https://www.rfc-editor.org/info/rfc9599
DOI: 10.17487/RFC9599
The purpose of this document is to guide the design of congestion
notification in any lower-layer or tunnelling protocol that
encapsulates IP. The aim is for explicit congestion signals to
propagate consistently from lower-layer protocols into IP. Then, the
IP internetwork layer can act as a portability layer to carry
congestion notification from non-IP-aware congested nodes up to the
transport layer (L4). Specifications that follow these guidelines,
whether produced by the IETF or other standards bodies, should
assure interworking among IP-layer and lower-layer congestion
notification mechanisms. This document is included in BCP 89 and
updates the single paragraph of advice to subnetwork designers about
Explicit Congestion Notification (ECN) in Section 13 of RFC 3819 by
replacing it with a reference to this document.
This document is a product of the Transport and Services Working Group Working
Group of the IETF.
BCP: This document specifies an Internet Best Current Practices for the
Internet Community, and requests discussion and suggestions for
improvements. Distribution of this memo is unlimited.
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