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Chapter 9: Configuring Multicast Forwarding
IGMP Snooping
SGE2000/SGE2000P Gigabit Ethernet Switch Reference Guide
Chapter
9
Configuring Multicast Forwarding
The Multicast section contains the following pages:
• IGMP Snooping
• Defining Multicast Bridging Groups
• Defining Multicast Forwarding
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 enable IGMP
Snooping:
1. Click Bridging > Multicast > IGMP Snooping. The IGMP Snooping Page opens:
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