Which WLC interface is dedicated for maintenance and recovery if the controller fails?

Which WLC interface is dedicated for maintenance and recovery if the controller fails?

• A. Service port interface
• B. AP manager interface
• C. Virtual interface
• D. Management interface

Answer: (A)

Maintenance and recovery access to a WLC relies on an out-of-band path that stays reachable even when the regular network is down. The service port is a dedicated physical port designed exactly for this purpose, letting you connect directly to the WLC with a PC or console to perform initial provisioning, password or image recovery, or other recovery tasks without depending on the production network. In contrast, the AP manager interface is used by APs to communicate with the controller during normal operation, the virtual interface is a logical path tied to VLANs for management traffic, and the standard management interface handles routine admin tasks over the production network. Because the service port provides a separate maintenance channel, it’s the best choice for maintenance and recovery when the controller fails.

Maintenance and recovery access to a WLC relies on an out-of-band path that stays reachable even when the regular network is down. The service port is a dedicated physical port designed exactly for this purpose, letting you connect directly to the WLC with a PC or console to perform initial provisioning, password or image recovery, or other recovery tasks without depending on the production network. In contrast, the AP manager interface is used by APs to communicate with the controller during normal operation, the virtual interface is a logical path tied to VLANs for management traffic, and the standard management interface handles routine admin tasks over the production network. Because the service port provides a separate maintenance channel, it’s the best choice for maintenance and recovery when the controller fails.