Intemittent wireless slowdowns building wide with Cisco 1100AP's

[Dustinn3]

We are having serious trouble with our wireless network in our main building. We are using Cisco 1100Ap's with 12.15 firmware. We have 6 ap's in our main building and 4 others in other buildings on the same network. All of the access points are set to 1,6,and 11 with no conflicting channels within reach of each other. We haven't added anything to the network or the buildings and we haven't added anything else in the 2.4 ghz range.

As of the last few days we are experiencing building wide wireless network slowdowns. The access points are not affected in adjoining buildings, but they are on the same network, non subnetted. I haven't seen any increased traffic on the network or the ap's. Our wired network is unaffected. I'm at a complete loss, other than hiring someone to come in with a spectrum analazer. Any ideas what could cause this?

 

[vipergg]

Not really unless you are getting strong interference at times from outside . Yeah everyone is clamoring for wireless and these are the problems you will run into , which are a lot harder to diagnose than wired connections . Are all these AP's on the same subnet ???

 

[Dustinn3]

They're all on the same subnet. Is there anything on the wired network side that could affect just the ap's?

 

[vipergg]

Do you have wired clients on this subnet along with wireless ? If so then it could be someone on the wired side causing problems . I think it is smart to totally separate the wired clients from the wireless and put them on their own subnet . If you http into the waps do you see anyone transmitting traffic at a lot higher rate than the others ? Also are these "B" waps or "G" ? What do you have the uplinks set at speedwise ? Maybe when this is happening you can look at your wired connection points from the waps and see if one is a lot more busy than the others . Just the fact the everyone sees the slowdown I would almost look at the wired end and work out from their .

 

[Dustinn3]

They are all B ap's. All the uplinks are 100MB execept on that is connected to a 10mb's hub. Our wired network is not experiencing any slowdowns whatsoever. I'll continue to monitor the traffic at the ap's to see if there is any increase in traffic.

Thanks,