300-430 Question 287
Select 3An enterprise network administrator is configuring a Cisco Wireless LAN Controller (WLC) for a large deployment of access points. The goal is to ensure proper redundancy and load balancing across multiple controllers. Which of the following configurations should be implemented to achieve this?
- A
Configure Mobility Groups across all WLCs to enable seamless roaming
- B
Implement N+1 redundancy by adding a backup controller for every active WLC
- C
Enable Link Aggregation (LAG) on each WLC to provide higher throughput and redundancy
- D
Configure AP failover priority to control access point reassignment during a failure
- E
Set up Primary, Secondary, and Tertiary controllers for each access point
Show answer and explanation
Correct answers: A, D, E
Explanation
To ensure proper redundancy and load balancing in a Cisco WLC deployment, the administrator should configure Mobility Groups for seamless roaming, set up AP failover priority to manage reassignment during failures, and assign Primary, Secondary, and Tertiary controllers for each access point to enable controlled failover and distribution of workload. These configurations ensure the network is resilient and maintains high availability without resource wastage.
- A. Correct.
Configuring Mobility Groups allows access points and clients to seamlessly roam between controllers while maintaining their session, which is essential for redundancy and load balancing.
- B. Incorrect.
Implementing N+1 redundancy is a valid approach but not the most efficient for large-scale deployments as it can waste resources compared to other strategies.
- C. Incorrect.
Enabling Link Aggregation (LAG) is beneficial for increasing throughput and redundancy at the network interface level but does not directly address WLC redundancy or load balancing.
- D. Correct.
Configuring AP failover priority ensures that access points can prioritize reassignment to specific controllers during a failure, which is critical for redundancy.
- E. Correct.
Setting up Primary, Secondary, and Tertiary controllers for each access point ensures proper load balancing and redundancy by allowing access points to failover to alternate controllers.