[Cu-wireless] wireless and the Windows registry

David Young dyoung at pobox.com
Fri Feb 14 16:42:58 CST 2003

Windows closes a TCP session after retransmitting the same segment just
five times. That is a lot faster than BSD and derivatives such as Mac
OS X will give up.

Our Green-to-Main wireless link will drop out for several seconds at
a time. In that time, sometimes Windows will send five retransmissions
and then reset the TCP connection. Sascha sees Windows disconnect a TCP
session about every five minutes for this reason.

I have found out that we can change his registry settings to help.
The first thing I have tried is to bump up his TcpMaxDataRetransmissions
setting from 5 to 20.

There are more applicable registry settings
than that. To find out more, read this URL,
and this one,


David Young             OJC Technologies
dyoung at ojctech.com      Engineering from the Right Brain
                        Urbana, IL * (217) 278-3933

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