I-D ACTION:draft-ietf-tsvwg-tcp-nonce-03.txt

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This draft is a work item of the Transport Area Working Group Working Group of the IETF.

	Title		: Robust ECN Signaling with Nonces
	Author(s)	: D. Wetherall, N. Spring, D. Ely
	Filename	: draft-ietf-tsvwg-tcp-nonce-03.txt
	Pages		: 12
	Date		: 29-Apr-02
	
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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