![]() Note: The router must support IGMP querier/proxy function, otherwise IGMP snooping on the switch will not work as expected.Īs not all the devices connected to the switch need IPTV service, we can configure IGMP Snooping on the switch so that only host B and host C can receive the IPTV programs. Host B and Host C are in the VLAN 10 and they want to receive IPTV programs from the IPTV source while Host D does not need any IPTV service. Here is an example for IGMP Snooping configuration.Īs shown in the following topology, Host B, Host C and Host D are connected to port 1/0/1, port 1/0/2 and port 1/0/3 respectively. With IGMP Snooping, the switch will forward IPTV stream only to the ports that request the IPTV service rather than to all ports. ![]() To solve this problem, we recommend you configure IGMP Snooping on the switch. When a switch receives the multicast traffic, it will flood the traffic to all the ports, even if the devices connected to some particular ports do not need the IPTV service, so the network could be very slow. IPTV programs are transmitted in multicast traffic.
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