I have a setup at a costumer where they use a lot of AP's in a building with a very open florplan arcitecture. This meens that a single laptop client can see 10 or more concurrent AP's.
The are also using 6 broadcasting SSID's. This meens that a single client sees beacons from around 60 AP/SSID combinations.
This result en very severy connectiong trouble from the clients. It seems to kill the wlan driver in windows XP. When limiting the number of SSID's to 4 the problem disapears. The problem is worst for Atheros interfaces but also present on Intel5300.
Any one have seen simular issue.
We are using Cisco WiSM 1131 and 1142 AP's
Just my 2 cents:
- Adding APs to support additional users is fine as long as you do a site survey to make sure that this will not cause interference. Remember that B/G only has 3 usable channels, thus the more users you have connected per channel and the more interference on that channel the longer they will have to wait to transmit.
- Although disabling SSID broadcasting does not improve security.....it will save resources. By default, wireless clients (phones, laptops, etc.) will attempt to join networks that they see automatically....this can mean hogging valuable bandwith and memory. If you add this to a dense AP deproyment with co-channel interference....which you probably have....you will definately see some issues.
Adding APs doesn't solve all problems....no matter what Cisco says. Use Airmagnet or some other site survey utility to get a look at your environment. Disable SSID broadacsting on as many SSIDs as possible to save resources....not for security.
For further help, please attach your show run-config. Thanks.