Technical data

BLADEOS 6.3 Command Reference
360
 Chapter 4: Configuration Commands BMD00186-B, April 2010
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 it only to ports connected to
those servers.
Table 224 describes the commands used to configure IGMP Snooping.
Table 224 IGMP Snooping Configuration Commands
Command Syntax and Usage
ip igmp snoop timeout <1-255>
Configures the timeout value for IGMP Membership Reports (host). Once the timeout value
is reached, the switch removes the host from its IGMP table, if the conditions are met. The
range is from 1 to 255 seconds. The default is 10 seconds.
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 range is from 1 to 600 seconds. The default is 255 seconds.
Command mode: Global configuration
ip igmp snoop query-interval <1-600>
Sets the IGMP router query interval, in seconds. The default value is 125.
Command mode: Global configuration
ip igmp snoop robust <2-10>
Configures the IGMP Robustness variable, which allows you to tune the switch for expected
packet loss on the subnet. If the subnet is expected to be lossy (high rate of packet loss),
increase the value. The default value is 2.
Command mode: Global configuration
[no] ip igmp snoop flood
Configures the switch to flood unregistered IP multicast traffic to all ports. The default setting
is enabled.
Command mode: Global configuration