We have three wireless controllers (5508) SW: 7.6.130 in enterprise with around 250 AP. ( 2600, 3702, e t c )
They all, on different networks, over L3. no mobility configured between them.
Problem: on some Access points, users get connected to SSID, authenticated, obtained dhcp address but unable to communicate with rest of the network. I have connected my laptop on same AP and same SSID.
I've got ip from dhcp, but not traffic passes. I cannot ping my gateway, cannot access internet and so on. My pc is able to reach/ping only WLC virtual interface, but not management IP, or my own gateway.
as workaround, If I move this AP to another controller, all works fine.
I have checked switchport config for AP. it's fine. ( switchport access vlan xxx)
Trunk to WLC controller is in portchannel. with all vlans allowed.
I upgraded version for controller to 8.3.102, but no luck.
Please assist me with this, as it becomes critical now.
I could not raise a TAC case, as serial numbers for those controllers are not covered anymore.
