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Configuring Multicast Forwarding
Configuring IGMP Snooping
Page 103
Configuring IGMP Snooping
When IGMP Snooping is enabled globally, all IGMP packets are forwarded to the CPU. The CPU analyzes the
incoming packets and determines:
• Which ports want to join which Multicast groups.
• Which ports have Multicast routers generating IGMP queries.
• Which routing protocols are forwarding packets and Multicast traffic.
Ports requesting to join a specific Multicast group issue an IGMP report, specifying that Multicast group is
accepting members. This results in the creation of the Multicast filtering database.
To configure IGMP Snooping:
1. Click Multicast > IGMP. The IGMP Page opens:
Figure 62: IGMP Page
The IGMP Page contains the following fields:
• Enable IGMP Snooping Status — Indicates if IGMP Snooping is enabled on the device. IGMP Snooping
can be enabled only if Bridge Multicast Filtering is enabled. The possible field values are:
– Checked — Enables IGMP Snooping on the device.
– Unchecked — Disables IGMP Snooping on the device.
• VLAN ID — Specifies the VLAN ID.
• IGMP Snooping Status — Indicates if IGMP Snooping is enabled on the VLAN.
The possible field values are: