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need aggressive roaming capable usb wireless adapter suggestions and be able to set minimum wireless speed manually

Posted on 2008-06-23
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Last Modified: 2013-11-09
I need aggressive roaming capable usb wireless adapter suggestions and be able to set minimum wireless speed manually. I have three ap's with same SSID. I want the cards to jump if the speed goes below 20 megs.

Could anyone suggest some products?
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Question by:BryceRichert
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Expert Comment

by:Darr247
ID: 21856631
What if it can't get above 20Mbps on any other AP either?
Do you want it to keep hopping from one to another in that case?
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Author Comment

by:BryceRichert
ID: 21856936
Then I would want no connection at all. We have an applicatin that needs a minimum mount of bandwidth to work. Is there a way to have some sort of smart adapter that I can specify the minimum bandwidth needed? It's better to not have a connection than a terribly slow one. AT that point I would just add more AP's to fill the voids, but we can't have the slow connecton.

Thank for any info on this.
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LVL 44

Expert Comment

by:Darr247
ID: 21857454
20Mbps is a lot of bandwidth, even deducting overhead.
A full T1 line is only 1.5Mbps.

I'm not aware of any adapters you can specify a minimum on, but I'll see what I can find.
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Author Comment

by:BryceRichert
ID: 21860807
This is an internal LAN
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Darr247 earned 500 total points
ID: 21865160
Well, I haven't found any adapters that let you set a minimum... you might be able to specifiy that in the router, though.

Did you mean connect speed or true throughput, btw?

True throughput of a 54g connection is typically only 40-45Mbps, of course... and 2 clients would cut that in half; if more than 2 it wouldn't matter how high the connect speed you enforce - they wouldn't be able to muster 20Mbps speeds if they were all transmitting or receiving simultaneously. And WEP or WPA-PSK lower those throughput figures by 10-15%, too; WPA2-AES security does not lower throughput after initial authentication, nor does 802.1x RADIUS (usually called WPA/WPA2 Enterprise).


> This is an internal LAN

Understood... I only mentioned the T1 speed for comparative bandwidth.
e.g. 10Mbps is sufficient bandwidth for transferring a 100 mebibyte file in under a minute and a half, or a 700MB CD full of data in under 10 minutes.
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Author Comment

by:BryceRichert
ID: 21909492
are there AP's that provide 40-45Mbps per client?

Or to have the client get that full 40-45Mbps do I need a seperate AP per client? That would sound silly. There are AP's at other places serving 20-30 people.
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