Name: draft-ietf-tsvwg-tcp-nonce-04
Title: Robust ECN Signaling with Nonces
State: Active
Authors: David Wetherall, Neil Spring, David Ely
Group: Transport Area Working Group (tsvwg)
Date: 2003-03-04
This note describes the 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 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.
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