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Wi-Fi Configuration

Posted on 2011-03-19
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Last Modified: 2013-11-12
Hello,
I have 5 Nortel AP in each floor which is supporting only B/G networks ,CTS/RTS enabled, Beacon internal set to 50. The end users are frequently complaining about that the slow connection  and inconsistent connection.
The internet bandwidth is very sufficient, signal strength also fair, access points are on same channel. I have noticed that the lighting pattern of the router start to change with more than 2 concurrent connections.
What would be the most probable cause?  And how to overcome the issue.

Thanks


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Question by:leolink1982
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by:Darr247
ID: 35174119
The first thing I would do is switch them to use channels 1, 6 and 11 instead of having them all on the same channel.
That should effectively give you 3x as much wireless bandwidth.

You don't mention how many floors there are. Try to assign the channels so the layout ends up something like

floor 3  ch11     ch1     ch6     ch11     ch1

floor 2  ch1      ch6      ch11     ch1     ch6

floor 1  ch6      ch11     ch1     ch6     ch11


Just repeat that pattern if there are more than 3 floors.
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by:leolink1982
ID: 35174223
Thanks ,

I have 10 floors, some floors i have N supported Ap's .

What about the clients ,will they automatically negotiate the channel no .

also ,can i use same SSID for all the access points

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Darr247 earned 500 total points
ID: 35174395
> I have 10 floors, some floors i have N supported Ap's .

2.4GHz 11n can coexist with 11g... just don't bother to enable wide channels on those APs.  22MHz channels can still give connection speeds betwen 130Mbps and 150Mbps with 11n.



What about the clients ,will they automatically negotiate the channel no .

Yes, they should. Typically they'll connect to the strongest one.  Windows wireless zero configuration (WZC) doesn't let you pick which channel to use, but most 3rd party connection managers (like from Broadcom, Atheros, Intel... or the customized versions from Dell, HP, et al) do allow you to pick which channel to save in a connection profile (or they can leave it set on Auto-select).



also ,can i use same SSID for all the access points

Yes.  Using the same SSID will make the APs that are on the same channels take turns gracefully if their signals overlap.
If you want to use a different SSID for each channel (e.g. AP-1, AP-6, AP-11), so windows clients can choose which channel to use, that's fine... just ensure the SSID stays the same across the same channel.
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