Chapter 9: Configuring Multicast Forwarding; Igmp Snooping - Cisco SGE2000 - - Gigabit Switch Administration Manual

Configuring Multicast Forwarding

IGMP Snooping

Configuring Multicast Forwarding
IGMP Snooping
Cisco Small Business SFE/SGE Managed Switches Administration Guide
The Multicast section contains the following topics:
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IGMP Snooping
•
Defining Multicast Group
•
Configuring IGMP Snooping Mapping
•
Defining Multicast TV Membership
•
Defining Multicast Forwarding
•
Defining Unregistered Multicast Settings
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.
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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:
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