We have 5-6 access points across a large building. The access points are cheap mismatching brands that have been setup over time as needed. Each one is plugged into our LAN and configured pretty basic. Each has the same SSID, DHCP disabled, and works.
The problem is at varying times I will get a call from users who can't connect to one. When they connect it doesn't give them an IP address on the network and gives the old 'limited connection message' (DHCP is configured on our Domain Controllers) unless I go and reboot the access point, then all works fine. It happens to each brand of access points we have setup. I've checked our DHCP server and we still have plenty of addresses left in the pool.
Does anyone have any ideas or solutions, could it be a switch gone bad somewhere? Any troubleshooting steps?