jernstrom.org

I better just dump this for reference before I forget about the whole thing….

You can check if your home router supports ECN with Micosoft Internet Connectivity Evaluation Tool

Summary below stolen from
http://technet.microsoft.com/en-us/library/bb726965.aspx

Compound TCP
For TCP connections with a large receive window size and a large bandwidth-delay product, Compound TCP (CTCP) in the Next Generation TCP/IP stack aggressively increases the amount of data sent at a time by monitoring the bandwidth-delay product, delay variations, and packet losses. CTCP also ensures that its behavior does not negatively impact other TCP connections. In testing performed internally at Microsoft, large file backup times were reduced by almost half for a 1 Gigabit per second connection with a 50 millisecond round-trip time. Connections with a larger bandwidth-delay product can have even better performance.

Receive Window Auto Tuning optimizes receiver-side throughput and CTCP optimizes sender-side throughput. By working together, they can increase link utilization and produce substantial performance gains for large bandwidth-delay product connections.

CTCP is enabled by default for computers running Windows Server 2008 and disabled by default for computers running Windows Vista. You can enable CTCP with the netsh interface tcp set global congestionprovider=ctcp command and disable CTCP with the netsh interface tcp set global congestionprovider=none command.

ECN Support
When a TCP segment is lost, TCP assumes that the segment was lost due to congestion at a router and performs congestion control, which dramatically lowers the TCP sender’s transmission rate. With Explicit Congestion Notification (ECN) support (RFC 3168) on both TCP peers and the routers in the routing infrastructure, routers experiencing congestion mark the packets as they forward them. TCP peers receiving marked packets lower their transmission rate to ease congestion and prevent segment losses. Detecting congestion before packet losses are incurred increases the overall throughput between TCP peers. Windows Server 2008 and Windows Vista support ECN, but it is disabled by default. You can enable ECN support with the netsh interface tcp set global ecncapability=enabled command.

Got tired of the %20 in downloaded files…

mycmd