A Cisco engineer at a new branch office is configuring a wireless network with access points that connect to a controller that is based at corporate headquarters. Wireless client traffic must terminat

Lightweight mode (default) tunnels all client data back to the central controller, which would not allow client traffic to terminate at the branch office and would cease functionality during a WAN outage.

Local mode is the standard mode where all client traffic is tunneled to the WLC. 'AP fallback' isn't a standard, specific AP mode that provides local switching and WAN survivability in the way FlexConnect does for branch offices.

OfficeExtend mode is specifically designed for teleworkers at home, not for branch offices. High availability refers to WLC redundancy, not AP survivability during a WAN outage in this context.

FlexConnect mode (formerly H-REAP) allows access points in a branch office to locally switch client data traffic, eliminating the need to tunnel it back to the central controller at headquarters. With local switching enabled, client traffic terminates at the branch AP, and if the WAN link to the WLC goes down, the AP can continue to serve clients (survivability) by performing local authentication (if configured) or using cached credentials.