maximizing windows 2003 server network throughput

I was using that setting on a heavy stressed RAC database.

TcpWindowSize, set to 64k if your have Gb network

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip
\Parameters\TcpWindowSize 65535

Tcp1323Opts, allow scaling on high speed network

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters
\Tcp1323Opts 1

MaxHashTableSize, maximize tcp control blocks

 HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip
\Parameters\MaxHashTableSize 65536

MaxUserPort, maximizes open port if you have plenty of memory

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip
\Parameters\MaxUserPort   65534