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the switch snoops IGMP Leave message sent by the host computer, the router will send Group-Specific
Query message of this port. If other hosts need this multicast, then the rely IGMP Report message. If the
router doesn't get any reply from the hosts, the switch would delete this port from the multicast forwarding
list. The router will send IGMP Query message regularly, the switch will deletes the port from the multicast
forwarding list if it doesn't get the IGMP Report message from the host.
(Figure 6.4.4.1 )
IGMP- Snooping configuration steps:
Step 1: in the IGMP- Snooping configuration to enable the check box to enable IGMP;
Step 2: in the host aging time of the text box to fill in the aging time;
Step 3: click the "Apply" button.
6.4.4.2 Static Multicast
The main function of the static multicast: some ports will be added to a multicast group, when data is sent
to the multicast address, the data can be received.
(Figure 6.4.4.2 )
Static multicast configuration:
Step 1: fill in Vid on the text box for the Vlan Id;
Step 2: in the multicast source of the text box to fill in the multicast source IP address;
Step 3: in the multicast address of the text box to fill in the multicast IP address;
Step 4: select the port in the port checkbox in the list;