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Tweaking wireless cards

Posted on 2004-10-16
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I have had some difficulty connecting one of my computers to a wireless network.  It was much slower than the other two computers in loading Internet pages and only a small number of pages could be loaded.  Some very helpful people on this site assisted me in finding a solution to that.    in fact I went back to just directly conected the slow computer via an ethernet cable and then tweaking the packet size for the Ethernet port (whatever the terminology is.  I am happy to be corrected on all this).  When I did that, and restarted the comptuer, I could load any required internet page.

I tried tweaking when I just had the wireless connection but  I found it just did not help.  Why is that?  

The wireless card in the slow computer is a DWL-G520.  The cards in the other two computers working well are Netcomm NP5420.  

In essence, can you tweak the packet size for a wireless card?  If so do you use the same sort of tweaking tool that you use for Ethernet ports?  Or is there something else?

Should all the wireless cards be tweaked using the same packet size?  Or do you test each individually using the DSL-REPORTS site?

Leon the Wolf  
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Question by:Leonthewolf
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schumakers earned 250 total points
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You actually adjust the packet size in the Access Point that you are connecting to.  That way all wireless clients are communicating with the same packet size.  The client gets this information when communicating with the access point.  You can reduce the size of the packet to reduce collisions and effectively increase throughput.  

There are a few other things to consider.  Where is the 3rd computer compared to the other two in relation to the access point?  If the 3rd computer is too far away compared to the other two they could drown out the other one.  This is called Near/Far by most people.
It can be handled in a couple ways
Decrease the power output of the wireless clients that are near to the access points
Increase the power output of the far client.
Move the remote node closer to the access point
Or in most cases a last resort move the access point or install another one

You also need to watch out with compatablility.  Sometimes different vendors products don't communicate very well and cause a lot of interference.  The Wi-Fi stamp of approval certifies that the access points and wireless cards meet the specs and should communicate properly.

Also you need to look for other signs of interference.  If you take the problem computer closer to the access point does it have problems still?   If not there may be interference close to where the computer is located.  Microwaves, Cordless phones, or other things that communicate at the same frequency and cause interference.

I will stop rambling now.  Hope this helps.
Shane
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Another note if you install the client's driver software it is usually much more configurable than the default microsofts drivers that it uses if you don't.
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