300-425 Question 77
Select 3You are configuring multicast support on a WLAN for a video streaming application that relies on efficient delivery to multiple clients. The application requires minimal bandwidth usage and low latency for optimal performance. Which configuration steps should you implement to ensure proper multicast functionality on the WLAN?
- A
Enable IGMP Snooping on the wireless controller
- B
Configure the multicast-to-unicast mode on the WLAN
- C
Ensure that the wireless LAN controller is in multicast-multicast mode
- D
Enable the video-optimized QoS profile on the WLAN
- E
Disable multicast traffic on the WLAN to reduce interference
Show answer and explanation
Correct answers: A, C, D
Explanation
To support multicast on a WLAN for a video streaming application, it is essential to enable IGMP Snooping to optimize traffic delivery, configure the wireless LAN controller in multicast-multicast mode to preserve bandwidth, and prioritize video traffic using a video-optimized QoS profile. These steps ensure minimal bandwidth usage and low latency, meeting the application's requirements.
- A. Correct.
Enabling IGMP Snooping ensures the wireless controller can identify multicast group members and optimize traffic delivery, reducing unnecessary traffic.
- B. Incorrect.
Configuring multicast-to-unicast mode converts multicast traffic to unicast, which increases bandwidth usage. This is not suitable for scenarios where minimal bandwidth usage is required.
- C. Correct.
Multicast-multicast mode ensures efficient delivery of multicast packets to all clients in the multicast group without converting them to unicast, preserving bandwidth.
- D. Correct.
Enabling a video-optimized QoS profile prioritizes video traffic and ensures low latency, which is critical for applications like video streaming.
- E. Incorrect.
Disabling multicast traffic would prevent the application from functioning properly, as it relies on multicast for efficient delivery.