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LTP-8X optical line terminal
analyse all IGMP packets between connected devices and the routers the multicast traffic comes from.
When the switch receives a consumer's IGMP request for connection to a multicast group, it adds the
port the consumer is connected to into the group. And vice versa, having received a request for leaving
a group, the switch removes the corresponding port from the group.
Fig. 24.2. IGMP Snooping Is Enabled
As you may see from Fig. 24.2, LTP-8X with enabled IGMP snooping translates multicast traffic only to
the hosts which are member of the IGMP group.
IGMP proxy is an IGMP client and group router at the same time (IGMP router). On the one hand, proxy
requests an upstream router for group channels; on the other hand, it receives join/leave requests from
hosts and replicates upstream traffic to the corresponding interfaces.