ProLiant BL p-Class GbE2 Interconnect Switch ISCLI Reference Guide

Configuration Commands 122
IGMP 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.
IGMP snooping configuration
The following table describes the basic IGMP Snooping Configuration commands. The following sections provide
more detailed information and commands.
Table 143 IGMP Snooping commands
Command Description
ip igmp snoop timeout <1-255> Sets the Maximum Response Time (MRT) for IGMP hosts. MRT is
one of the parameters used to determine the age out period of the
IGMP hosts. Increasing the timeout increases the age out period.
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 age-out period for the IGMP Mrouters in the
Mrouter table. If the switch does not receive a General Query
from the Mrouter for mrto seconds, the switch removes the
multicast router from its Mrouter table.
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. The range is 1-600 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), then
increase the value. The default value is 2.
Command mode: Global configuration
[no] ip igmp snoop aggregate Enables or disables IGMP Membership Report aggregation.
Command mode: Global configuration
ip igmp snoop source-ip <IP address> Configures the source IP address used as a proxy for IGMP Group
Specific Queries.
Command mode: Global configuration
ip igmp snoop vlan <1-4095> Adds the VLAN to IGMP Snooping.
Command mode: Global configuration
no ip igmp snoop vlan <1-4095> Removes the VLAN from IGMP Snooping.
Command mode: Global configuration
no ip igmp snoop vlan all Removes all VLANs from IGMP Snooping.
Command mode: Global configuration
[no] ip igmp snoop vlan <1-4095>
fastleave
Enables or disables Fastleave processing. Fastleave allows the
switch to immediately remove a port from the IGMP port list, if the
host sends a Leave message, and the proper conditions are met.
This command is disabled by default.
Command mode: Global configuration
ip igmp snoop enable Enables IGMP Snooping.
Command mode: Global configuration
no ip igmp snoop enable Disables IGMP Snooping.
Command mode: Global configuration
show ip igmp snoop Displays the current IGMP Snooping parameters.
Command mode: All except User EXEC