Without a prior version check, an engineer configures IGMP snooping on a device and the version of IGMP snooping is earlier than the IGMP versions on user hosts. In this case, which of the following situations will occur?
A.
Users cannot receive multicast data because the device forwards received IGMP Report messages only to router ports and does not generate group member ports or forwarding entries.
B.
Users cannot receive multicast data, but the device generates forwarding entries after receiving IGMP Report messages.
C.
The IGMP snooping version of the device is automatically degraded, and users can receive multicastdata properly.
D.
The IGMP versions of the hosts are automatically upgraded, and users can receive multicast data properly.
If the IGMP snooping version on the device is earlier than the IGMP version on user hosts, the device may fail to parse IGMP Report messages correctly. As a result, the device forwards these messages only to router ports without generating group member ports or forwarding entries.
Multicast and IGMP snooping behaviors under mismatched conditions are described in the multicast configuration chapters​​.
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