Cisco SGE2000 - Cisco - Gigabit Switch Administration Guide

Configuring Multicast Forwarding
IGMP Snooping
Cisco Small Business SFE/SGE Managed Switches Administration Guide 235
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Configuring Multicast Forwarding
The Multicast section contains the following topics:
• IGMP Snooping
• Defining Multicast Group
• Configuring IGMP Snooping Mapping
• Defining Multicast TV Membership
• Defining Multicast Forwarding
• Defining Unregistered Multicast Settings
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:

Cisco SGE2000 - Cisco - Gigabit Switch Specifications

General

Form Factor	Rack-mountable
Switching Capacity	48 Gbps
Forwarding Rate	35.7 Mpps
Layer	Layer 2
Power Supply	Internal
Management	Web-based, SNMP, CLI
MAC Address Table Size	8000 entries
VLANs	256
Features	Quality of Service (QoS), IGMP snooping, Port mirroring
Dimensions (W x D x H)	440 x 257 x 44 mm (17.3 x 10.1 x 1.73 in)
Operating Temperature	0°C to 40°C (32°F to 104°F)
Storage Temperature	-20 to 70°C (-4 to 158°F)
Relative Humidity	10% to 90% non-condensing
Standards Compliance	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3x