Which configuration is applied to prevent the network from a Layer 2 flooding of multicast frames with a seamless transfer of multicast data to the client when roaming from one controller to another?
A.
Enable IGMPv3 on the central Layer 3 switch.
B.
Enable IGMP snooping on the WLC.
C.
Enable multicast mode on the WLC.
D.
Create multicast groups on the central Layer 3 switch.
IGMP snooping is a Layer 2 protocol that prevents multicast flooding by forwarding multicast traffic only to those ports that have joined the multicast group. IGMP snooping can be enabled on wireless LAN controllers (WLCs) to prevent Layer 2 flooding of multicast frames when clients roam from one controller to another.
C. Enable multicast mode on the WLC.
to prevent the network from Layer 2 flooding of multicast frames and enable seamless transfer of multicast data to clients when roaming from one controller to another, the recommended configuration is to enable multicast mode on the WLC.
B is correct
https://www.cisco.com/en/US/docs/wireless/controller/7.4/configuration/guides/system_management/config_system_management_chapter_01011.html#:~:text=When%20IGMP%20snooping%20is%20enabled%2C%20the%20following%20is%20true%3A
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