How does a wireless LAN controller provide stateful failover for access points and client sessions?
Choose an answer
Tap an option to check your answer.
Correct answer: The active WLC establishes a CAPWAP tunnel with the AP, and the standby WLC copies the AP database and the client database from the active WLC..
Why this is the answer
Stateful failover in a WLC pair ensures that client sessions are maintained if the active WLC fails. The active WLC handles all CAPWAP tunnels with the access points and manages client connections. For redundancy, the active WLC continuously synchronizes its AP database (containing AP configurations and states) and its client database (containing client MAC addresses, IP addresses, security parameters, and session states) to the standby WLC. This synchronization allows the standby WLC to seamlessly take over if the active WLC becomes unavailable, minimizing service disruption. The other options describe incorrect or incomplete failover mechanisms. LWAPP is an older, deprecated protocol. Separate CAPWAP tunnels from both WLCs to the AP would cause conflicts and are not how failover works. Sharing only the AP database is insufficient for stateful client failover.
Pass your exam — without the endless answer hunt
Get every verified question and explanation for this exam in one place, and save hours of prep. 1,000+ certifications · 20+ languages · free to start.
Pass your exam faster → No card needed