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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: