We are running WCS Version 22.214.171.124 and had a 5508 WLC fail that was connected to this WCS. The WLC was replaced and is running the same config and Software Version 126.96.36.199.
In WCS the old controller shows up as unreachable which you would expect, but with the new WLC online it does not see it at all. Is there somewhere that I need to change the MAC address or something for WCS to accept the new WLC?
From the WCS, remove the old controller. On the new WLC, make sure that you have configured the SNMP RW community string. Then add the WLC to the WCS with this new SNMP RW community.
Let me know how that goes.