I have over 20 1200 series PoE Aironets in a large building, using multiple vlans + WPA.
Starting about 6 weeks ago, random waps will just stop responding to ping, ssh, http, and stops serving clients--I have connected via serial, and I dont get anything... Once I powercyle though, it works fine for an inderterminate amount of time, at which case it goes back to not responding.
I have switch PoE ports on the PoE switch, switched out to using PoE injecters, used a different switch, etc.
System Software Filename: c1200-k9w7-tar.123-8.JA
System Software Version: 12.3(8)JA
Bootloader Version: 12.2(8)JA
I also did some sniffing on this vlan (mgmt vlan) which all it currently has is the 20-odd aironets, and about 5 switches. I am seeing a bit of stp traffic, maybe a couple stp packets / second, with the current root bridge cost of 8.
I dont have any other ideas on what is going on....