I have a WCS running at our main data center. We recently added a WLAN Controller (4402)in a remote office that is located over a VPN tunnel.
The WCS can PING the WLC (but it is slow at about 250ms), and I can access the controller's web interface from the WCS server. I just cannot add the controller, it gives me the error "No response from device, check SNMP communities, version or network for issues."
Any thoughts on what I can try?
I have also verified the SNMP communities and removed and re-added them on both the WCS and WLC, and I've tried both the RO and RW strings. No difference.