A community bank has three campus locations and one HO with the data center operations...

Two C9120 campus APs must be converted to EWC mode, one for the active controller and the other for standby with HQ WLC set as N»1 backup. The campus guest WLAN will use the guest anchor to HO WLC for guest VLAN access, and employee WLAN will need the HQ AAA server to be added to EWC and then use that to perform the 802.1x authentication.

Two C9120 campus APs must be converted to EWC mode, one for the active controller and the other for standby set as N+1 backup. The campus guest WLAN will use local web auth on guest VLAN. and employee WLAN will need the HO AAA server added to EWC.

One C9120 campus AP must be converted to EWC mode, and the preferred controller is set to that AP with HO WLC should be paired as mobility peer and configured as N+1 backup. The campus guest WLAN will use local web auth on guest VLAN. The campus employee WLAN will need the guest anchor back to the HO employee WLAN.

One C9120 AP in each campus must be converted to EWC mode, and the preferred controller is set to that AP with HO WLC set as N*1 backup. The campus guest WLAN will use local web auth on guest VLAN, and employee WLAN will need the HO AAA server to be added to EWC.