Planet Technology MGSW-2402 - Manual (Page 16)

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3.13 IGMP
Multicasting is used to support real-time applications such as video conferencing or streaming
audio. IGMP ( Internet Group Management Protocol ) allow you to query for any attached hosts
who want to receive a specific multicast service. The switch looks up the IP Multicast Group
used for this service and adds any port which received a similar request to that group. It then
propagates the service request on to any neighboring multicast switch to ensure that it will
continue to receive the multicast service.
Figure 3-12 The IGMP page
IF you want your switch to support multimedia and IP multicast, enable this option (default is
enabled). When this option is enabled, this switch only directs the multicast data packets to the
ports where needed, saving bandwidth. If " Forward with high priority " option is enabled, then
the IP multicast traffic will have a higher priority than other traffic.
3.14 Static Address
You can lock a certain MAC address ( associated with a host, ) to a certain port. Once a certain
MAC address is locked to a certain port, this MAC address will not receive any packets if it is
moved to another port.
Figure 3-13 The Static Address page