Technical data

RackSwitch G8124 Command Reference
Chapter 4: Configuration Commands
 159BMD00076, January 2009
IGMP Snooping Configuration
IGMP Snooping allows the switch to forward multicast traffic only to those ports that
request it. IGMP snooping prevents multicast traffic from being flooded to all ports. The
switch learns which server hosts are interested in receiving multicast traffic, and forwards the
multicast traffic only to ports connected to those servers.
Table 4-46 describes the commands used to configure IGMP Snooping.
Table 4-46 IGMP Snooping Configuration Commands
Command Syntax and Usage
[no] ip igmp snoop enable
Enables or disables IGMP Snooping.
Command mode: Global configuration
ip igmp snoop mrouter-timeout <1-600>
Configures the timeout value for IGMP Membership Queries (Mrouter). Once the timeout value
is reached, the switch removes the multicast router from its IGMP table, if the proper conditions
are met. The default value is 255 seconds.
Command mode: Global configuration
ip igmp snoop source-ip <VLAN number (1-4094)> <IP address>
Configures the source IP address used as a proxy for IGMP Group Specific Queries.
Command mode: Global configuration
[no] ip igmp snoop vlan <1-4094>
Adds or removes the selected VLAN(s) to IGMP Snooping.
Command mode: Global configuration
show ip igmp snoop
Displays the current IGMP snooping parameters.
Command mode: All