300-430 Question 63
Single answerAn enterprise network deploys Cisco wireless LAN controllers (WLCs) to support multicast traffic for video streaming applications. The network administrator notices that multicast packets are not efficiently delivered to wireless clients, causing unnecessary bandwidth consumption. To optimize multicast traffic delivery, what configuration should the administrator apply on the WLC?
- A
Enable Multicast to Unicast mode on the WLC
- B
Disable IGMP Snooping on the WLC
- C
Enable Multicast Direct mode on the WLC
- D
Configure Multicast-Multicast mode on the WLC
Show answer and explanation
Correct answer: A
Explanation
When multicast traffic causes inefficiencies in wireless networks, enabling Multicast to Unicast mode on the WLC ensures that multicast packets are converted to unicast packets. This eliminates the need for multicast support on the underlying wired infrastructure and avoids unnecessary flooding, optimizing bandwidth usage and improving client performance.
- A. Correct.
This is the correct option. Multicast to Unicast mode converts multicast packets into unicast packets for each associated client, ensuring efficient delivery without requiring multicast support on underlying infrastructure.
- B. Incorrect.
This is incorrect. Disabling IGMP Snooping would lead to unnecessary multicast flooding to all access points, further increasing bandwidth usage.
- C. Incorrect.
This is incorrect. Multicast Direct mode is not a configuration option for optimizing multicast delivery on Cisco WLCs. It is not applicable in this scenario.
- D. Incorrect.
This is incorrect. Multicast-Multicast mode requires multicast support across the entire wired network, which may not be suitable for the described scenario.