KYLAND Technology SICOM3024P, Web Operation Manual

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Advanced Configuration
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Select member ports for the multicast address. If hosts connected to a port need to receive
the packets from a multicast address, you can configure the port as the member port of the
multicast address.
3. View, modify, or delete a static multicast entry, as shown in the following figure.
Figure 53 Operations on a Static Multicast Entry
The static multicast address list contains the MAC address, VLAN ID, and member port. To
delete an entry, select the entry and click <Delete>. To modify an entry, select the entry and
click <Modify>.
6.8 IGMP Snooping
6.8.1 Overview
Internet Group Management Protocol Snooping (IGMP Snooping) is a multicast protocol at
the data link layer. It is used for managing and controlling multicast groups. IGMP
Snooping-enabled switches analyze received IGMP packets, establish mapping between
ports and MAC multicast addresses, and forward multicast packets according to the
mapping.
6.8.2 Concepts

Querier: periodically sends IGMP general query packets to query the status of the
members in the multicast group, maintaining the multicast group information. When
multiple queriers exist on a network, they automatically elect the one with the smallest IP
address to be the querier. Only the elected querier periodically sends IGMP general query
packets. The other queriers only receive and forward IGMP query packets.

Router port: receives general query packets (on an IGMP-enabled switch) from the
querier. Upon receiving an IGMP report, a switch establishes a multicast entry and adds