Implementing Cisco Enterprise Wireless Networks (ENWLSI) — Question 215

Clients on access points within an AP group are not receiving multicast traffic after roaming to another AP within the AP group. Which action maintains multicast connectivity?

Answer options

• A. Enable a unique NAS-ID for the AP group.
• B. Enable NAC out-of-band support.
• C. Enable IGMP snooping.
• D. Enable an ACL on the router that serves the VLAN or subnet.

Correct answer: C

Explanation

Enabling IGMP snooping allows the network to listen in on IGMP conversations between hosts and routers, which helps manage multicast traffic efficiently. The other options do not directly address the management of multicast traffic in a roaming scenario; a unique NAS-ID or NAC support does not influence multicast delivery, and an ACL may restrict traffic instead of facilitating it.