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?
The customer aims to increase traffic capacity and ensure redundancy without adding another controller. Connecting a second 10-GB interface on the WLC and implementing Link Aggregation Group (LAG) provides both increased bandwidth and redundancy. This combined approach allows traffic to be balanced across multiple physical interfaces, enhancing overall network performance and reliability.
also for D, N+1 doesn't solve the traffic load issue as the main WLC still has all the APs. Therefore, LAG is the most likely solution as it offers higher capacity and additional (uplink) redundancy.
B and D can be the answers , since it says purchase an additional controller is not an option (assume that even physical or virtual ). 5520 has 2 x 10Gports . so second port can be connected and make a LAG to increase the bandwisth and port redundancy