How to shorten timeout for connection to a non-existing IP

This command

C:\>telnet 123.45.67.89 1521
Connecting To 123.45.67.89...Could not open connection to the host, on
port 1521: Connect failed

comes back with Connect failed error in about 20 or 21 seconds. What
can be done to shorten this time? I tried these registry settings at
HKLM\System\CurrentControlSet\Services\Tcpip\Param eters:

KeepAliveTime 120000
TcpTimedWaitDelay 120000
TcpWindowSize 64512
TCPMaxRetransmissions 1

The telnet still hangs for about 20 seconds. What am I missing?
Thanks.

Yong Huang

> TCPMaxRetransmissions 1

Wrong param. After I set TcpMaxConnectRetransmissions to 2 (default 3)
and reboot, timeout occurs in 9 seconds instead of 21.

Ref:
http://www.microsoft.com/technet/pro...try/58804.mspx

I thought setting TcpInitialRTT to 2 (default 3) would also help. I
set it under the specific interface in registry and rebooted. It did
not shorten the timeout.

Yong Huang