Cisco Catalyst 2950 Command Reference

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Catalyst 2950 and Catalyst 2955 Switch Command Reference
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Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
ip igmp snooping
ip igmp snooping
Use the ip igmp snooping global configuration command to globally enable Internet Group
Management Protocol (IGMP) snooping. Use the no form of this command to disable IGMP snooping.
ip igmp snooping
no ip igmp snooping
Syntax Description This command has no arguments or keywords.
Note Though visible in the command-line help string, the tcn keyword is not supported.
Defaults IGMP snooping is globally enabled.
Command Modes Global configuration
Command History
Usage Guidelines When IGMP snooping is globally enabled, IGMP snooping is enabled on all the existing VLAN
interfaces. When IGMP snooping is globally disabled, IGMP snooping is disabled on all the existing
VLAN interfaces.
The configuration is saved in NVRAM.
Examples This example shows how to globally enable IGMP snooping:
Switch(config)# ip igmp snooping
To verify your settings, enter the show ip igmp snooping privileged EXEC command.
Related Commands
Release Modification
12.0(5.2)WC(1) This command was introduced.
Command Description
ip igmp snooping vlan Enables IGMP snooping on a VLAN interface.
ip igmp snooping vlan immediate-leave Enables IGMP Immediate-Leave processing.
ip igmp snooping vlan mrouter Configures a Layer 2 port as a multicast router port.
ip igmp snooping vlan static Configures a Layer 2 port as a member of a group.
show ip igmp snooping Displays the IGMP snooping configuration.

Cisco Catalyst 2950 Specifications

General

Forwarding Bandwidth	8.8 Gbps
Switching Capacity	13.6 Gbps
Forwarding Rate	6.6 Mpps
Weight	3.6 kg
RAM	16 MB
Flash Memory	8 MB
Operating Humidity	10% to 85% non-condensing
Uplink Ports	2 x 10/100/1000Base-T
Dimensions	4.4 cm x 44.5 cm x 24.2 cm
Remote Management Protocol	SNMP, Telnet, HTTP
Features	Quality of Service (QoS), VLAN support
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.1D, IEEE 802.1Q, IEEE 802.1p
Status Indicators	system
Operating Temperature	0 to 45°C
Ports	24 x 10/100 Ethernet ports
MAC Address Table Size	8, 192 entries
Power Supply	Internal 100-240V AC, 50-60Hz