Stackable NWay Ethernet Switch User’s Guide
Figure 7-16. Static Permanent Multicast Filtering--Edit window
To edit or create a new filter, enter the MAC address in the MAC Address field, select the desired Switch and Port in the next two fields. Next, select Forward or Block for each port, deciding whether that port transmits or blocks traffic for the specified multicast group. Click Apply to activate the filter.
IGMP
Internet Group Management Protocol (IGMP) snooping allows the Switch to recognize IGMP queries and reports sent between network stations or devices and an IGMP router. IGMP is used for managing IP multicast groups. The Switch will send IGMP query messages and get the IGMP response from hosts to “learn” the source port members of that multicast address. When a multicast address is received and found on the IGMP address table, it will be multicast to those port members.
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