Cisco SGE2000 User Manual

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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:

Cisco SGE2000 Specifications

General

Jumbo Frame Support	9KB
VLANs	Up to 256
Management	Web-based, SNMP, CLI
Standards	IEEE 802.3, 802.3u, 802.3ab, 802.3z, 802.3x, 802.1D, 802.1Q, 802.1p, 802.1w
Dimensions	440 x 44 x 257 mm
Power Supply	100 to 240V AC, 50-60 Hz
Operating Temperature	0°C to 40°C
Storage Temperature	-20 to 70°C (-4 to 158°F)
Humidity	10% to 90% non-condensing
Weight	3.2 kg