Planet FGSW-2840 User Manual page 139

indicates that the destination address should be a group port list, so the Managed Switch will duplicate this multicast data and
deliver each port one copy. The general format of the multicast address table is described as
IGMP Snooping
In the network, the hosts apply to the near Router for joining (leaving) a multicast group by sending IGMP (Internet Group
Management Protocol) messages. When the up-stream device forwards down the multicast data, the Managed Switch is
responsible for sending them to the hosts. IGMP Snooping is a multicast control mechanism, which can be used on the Managed
Switch for dynamic registration of the multicast group. The Managed Switch, running IGMP Snooping, manages and controls the
multicast group via listening to and processing the IGMP messages transmitted between the hosts and the multicast router, thereby
effectively prevents multicast groups being broadcasted in the network.
The Multicast is mainly for multicast management configuration of the Managed Switch, the screen in
This section has the following items:
■ IGMP Snooping
■ Multicast IP
■ Multicast Filter
■ Packet Statistics
VLAN ID Multicast IP
Figure 4-6-3: Multicast Address Table
Figure 4-6-4: Multicast Page Screenshot
Configure IGMP Snooping function of Managed Switch.
Configure Multicast IP function of Managed Switch.
Configure Multicast Filtering function of Managed Switch.
Display Multicast packet statistics of Managed Switch.
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User's Manual of FGSW-2840 / FGSW-4840S
Figure 4-6-3
Port
below.
Figure 4-6-4 appears.