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3.Display the IGMP Status In the exec mode of CLI
4.Display the IGMP snooping Status In the exec mode of CLI
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Note: One thing needs to be mentioned is that in the IGMP router, we do not need to enable IGMP snooping function.
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Overview of MVR
MVR refers to Multicast VLAN Registration that enables a media server to transmit multicast stream in a single multicast VLAN while clients receiving multicast VLAN stream can reside in different VLANs. Clients in different VLANs intending to join or leave the multicast group simply send the IGMP Join/leave message to a receiver port. The receiver port belonging to one of the multicast groups can receive multicast stream from media server. In the Figure 1, without support of MVR, the Multicast stream from the media server and the subscriber must reside in the same VLAN. For each VLAN, A media server is required to transmit multicast stream once and totally, media server transmits 6 times. In the Figure 2, on the contrary, with MVR, a media server is required to transmit multicast traffic to clients in different VLANs at once.
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