300-430 Question 74
Select 3A network administrator is troubleshooting poor performance on a wireless network where multicast traffic is being extensively used for video streaming. Upon investigation, the administrator notices high latency and packet loss on the WLAN. Which of the following actions can help mitigate the impact of multicast traffic on the wireless network?
- A
Enable multicast-to-unicast conversion on the wireless controller.
- B
Increase the data rate for multicast traffic on the WLAN.
- C
Disable Quality of Service (QoS) on the wireless network to prioritize multicast traffic.
- D
Segment multicast traffic into a separate VLAN.
- E
Reduce the beacon interval on the access points to improve multicast delivery.
Show answer and explanation
Correct answers: A, B, D
Explanation
Multicast traffic can negatively impact wireless networks due to the way it is transmitted at the lowest data rate in the WLAN, leading to inefficiency and increased latency. Enabling multicast-to-unicast conversion ensures better reliability, while increasing the multicast data rate improves throughput. Additionally, segmenting multicast traffic into a separate VLAN reduces congestion, ensuring smoother delivery. These actions collectively mitigate the challenges multicast traffic poses in wireless environments.
- A. Correct.
Enabling multicast-to-unicast conversion on the wireless controller ensures multicast traffic is sent as unicast frames to wireless clients, improving reliability and reducing packet loss in environments with low multicast efficiency.
- B. Correct.
Increasing the data rate for multicast traffic ensures that multicast packets are transmitted more quickly, reducing delays and improving overall performance.
- C. Incorrect.
Disabling QoS does not prioritize multicast traffic; instead, it removes prioritization for all traffic classes, potentially degrading multicast traffic performance further.
- D. Correct.
Segmenting multicast traffic into a separate VLAN can isolate it from other traffic, reducing congestion and improving performance for both multicast and non-multicast traffic.
- E. Incorrect.
Reducing the beacon interval does not directly impact multicast traffic performance and can increase overhead on the WLAN, potentially worsening performance.