The TechNet Cable Guy article for October 2006 is titled "Explicit Congestion Notification (ECN) for TCP/IP" and describes the need for ECN, how ECN works for IP and TCP traffic, and how ECN is supported in Windows Vista Release Candidate 1.
http://www.microsoft.com/technet/community/columns/cableguy/cg1006.mspxFor a complete list of TechNet Cable Guy articles, see
http://www.microsoft.com/technet/community/columns/cableguy/cgarch.mspx.
