RFC 3540

Robust Explicit Congestion Notification (ECN) Signaling with Nonces, June 2003

Canonical URL:
https://www.rfc-editor.org/rfc/rfc3540.txt
File formats:
Plain TextPDF
Status:
EXPERIMENTAL
Authors:
N. Spring
D. Wetherall
D. Ely
Stream:
IETF
Source:
tsvwg (tsv)

Cite this RFC: TXT  |  XML

DOI:  10.17487/RFC3540

Discuss this RFC: Send questions or comments to tsvwg@ietf.org

Other actions: Submit Errata  |  Find IPR Disclosures from the IETF


Abstract

This note describes the Explicit Congestion Notification (ECN)-nonce, an optional addition to ECN that protects against accidental or malicious concealment of marked packets from the TCP sender. It improves the robustness of congestion control by preventing receivers from exploiting ECN to gain an unfair share of network bandwidth. The ECN-nonce uses the two ECN-Capable Transport (ECT)codepoints in the ECN field of the IP header, and requires a flag in the TCP header. It is computationally efficient for both routers and hosts. This memo defines an Experimental Protocol for the Internet community.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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