wireless networking problem

[oneeyejack7]

i have a friend using a linksys BEFSR41W wireless router connected to a linksys WAP11 (WAP). he has 3 winxp home machines and each machine has a linksys WUSB11 wireless USB network adapter. in addition he has a w2k laptop using a built in wireless lan.

when he connects his laptop and runs a bandwidth test from cnet ((http://webservices.cnet.com/Bandwidth/) he gets a pretty good connection - around 700kbps+. (don't ask me why he uses that instead of dslreports) after he turns on another computer on (the winxp machine) and runs the test again his bandwidth significantly drops to around 200kbps or sometimes even lower to around 100kbps. even after he turns the winxp machine off he still gets around the same bandwidth. he gets the regular bandwidth back when he resets the cable modem or router. strange.

any suggestions or solutions on why this would happen??

 

[JackMDS]

These online tests depends on so many ancillary variables that they almost meaningless.

Down load a large (10MB) file from a good sever, and measure the time. The Bandwidth is usually about 10 times more in Mb/sec. Then the download in KB/sec.

I.e. If the download is steady at200KB/sec. the bandwidth is about 2Mb/sec.

However if you want to optimize the connection.

Download - DrTCP (it is free)

<a target=new class=ftalternatingbarlinklarge href="http://www.dslre
ports.com/front/DRTCP019.exe">http://www.dslreports.com/front/DRTCP019.exe</a>

Run the proggie and write down your current setting, just in case you want to set it back.

Make sure that Adapter Settings shows the correct NIC.

The following is an Example of settings optimized for DSL Internet system.

Tcp Receive - 256960

Window Scaling - Yes

Time Stamping - No

Selective Acks - Yes

Path MTU Discovery - Yes.

Black Hole - NO

Max Duplicate - 3

TTL - 64

MaxMTU ? 1500 for Cable, 1492 for DSL.

Enter these values, click Apply, and reboot.

 

[oneeyejack7]

thanks jackmds!!!

would i have to place drtcp on every machine or just one of them?

 

[JackMDS]

You better off optimizing all of them.