Designing Cisco Enterprise Wireless Networks (ENWLSD) — Question 143

A customer uses a Cisco 5520 WLC that is connected via a single 10-GB interface to manage the wireless network. The wireless network includes 500 APs for the campus network. The customer wants to add 300 APs and is concerned about traffic load and lack of redundancy. The purchase of a second controller is not an option. Which design approach mitigates the customer concerns?

Answer options

• A. Connect a second 10-GB interface on the WLC and set the port as a secondary port.
• B. Connect a second 10-GB interface on the WLC and implement LAG.
• C. Implement a vWLC and configure SSO with the WLC.
• D. Implement a vWLC and configure N+1 redundancy with the WLC.

Correct answer: B

Explanation

The correct answer is B, as implementing Link Aggregation Group (LAG) with a second 10-GB interface increases bandwidth and provides redundancy without needing a second controller. Option A does not provide load balancing, while options C and D involve more complex configurations that are not applicable since a second controller is not an option.