I have just installed a secondary WLC 4402 where a client has 1121 APs and 1010 APs and I am slightly confused.
We have 2 CISCO-LWAPP-CONTROLLER entries in DNS
The WLCs are WLC1 and WLC2
The 1010 APs fail over to the secondary controller perfectly well.
The 1121 APs do not fail over.
I have given the APs primary and secondary controller names of WLC1 and WLC2.
Is this due to Option 43 not being configured correctly.
I believe though I have not investigated that there is a single entry for the 1121 APs in the DHCP scope for option 43 of the original conmtroller but there is no entry for the 1010 APs.
They are using the same DHCP scope in a layer 2 implementation.
Any help appreciated