I have 2 4404 WLCs and 41 APs. these 41 AP connect to 1 4404 WLC. I want to added the second WLC as a backup WLC. since i have 2 6509 core switches , I want to primary WLC connects to core1 switch, and the backup WLC connects to core2 switch . Please tell me how to configure the WLCs
You would need to configure both WLC to ensure they are both in the same mobility group in order for the AP's to know of both WLCs. You would also need to configure the AP's with the Primary, Secondary or Tertiary WLC in order for that AP to know which WLC to join.