Designing Cisco Enterprise Wireless Networks (ENWLSD) — Question 207

A customer has this wireless design at its main branch:
• two Cisco Catalyst 9800 Series wireless controllers named WLC-Aand WLC-B in an N+1 configuration
• the same WLANs with different Layer 3 interfaces for each WLC
• 100 APs in local mode

WLC-A manages the APs for a building named Building A. WLC-B manages the APs for a building named Building B. The customer wants to ensure that users can remain connected and retain their session state, including the IP address, when they move between buildings. How must this requirement be incorporated into the design?

Answer options

• A. Configure WLC-A and WLC-B in a high-availability cluster and set a mobility MAC address.
• B. Create a mobility tunnel between WLC-A and WLC-B with the same group name.
• C. Implement AP groups for each building by using the same name on WLC-A and WLC-B.
• D. Connect WLC-A and WLC-B by using the redundancy port to sync client sessions.

Correct answer: B

Explanation

The correct answer is B because establishing a mobility tunnel allows the seamless transfer of client sessions between WLC-A and WLC-B, which is essential for maintaining session state and IP address continuity. Options A and D do not address the requirement for session retention during mobility, while option C focuses on AP group naming rather than the necessary session continuity across controllers.