Cisco Systems 3130 Manual Do Utilizador
23-12
Cisco Catalyst Blade Switch 3130 for Dell Software Configuration Guide
OL-13270-01
Chapter 23 Configuring IGMP Snooping and MVR
Configuring IGMP Snooping
To disable IGMP Immediate Leave on a VLAN, use the no ip igmp snooping vlan vlan-id
immediate-leave global configuration command.
immediate-leave global configuration command.
This example shows how to enable IGMP Immediate Leave on VLAN 130:
Switch# configure terminal
Switch(config)# ip igmp snooping vlan 130 immediate-leave
Switch(config)# end
Configuring the IGMP Leave Timer
Follows these guidelines when configuring the IGMP leave timer:
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You can configure the leave time globally or on a per-VLAN basis.
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Configuring the leave time on a VLAN overrides the global setting.
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The default leave time is 1000 milliseconds.
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The IGMP configurable leave time is only supported on hosts running IGMP Version 2.
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The actual leave latency in the network is usually the configured leave time. However, the leave time
might vary around the configured time, depending on real-time CPU load conditions, network delays
and the amount of traffic sent through the interface.
might vary around the configured time, depending on real-time CPU load conditions, network delays
and the amount of traffic sent through the interface.
Beginning in privileged EXEC mode, follow these steps to enable the IGMP configurable-leave timer:
To globally reset the IGMP leave timer to the default setting, use the no ip igmp snooping
last-member-query-interval global configuration command.
last-member-query-interval global configuration command.
To remove the configured IGMP leave-time setting from the specified VLAN, use the no ip igmp
snooping vlan vlan-id last-member-query-interval global configuration command.
snooping vlan vlan-id last-member-query-interval global configuration command.
Configuring TCN-Related Commands
These sections describe how to control flooded multicast traffic during a TCN event:
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•
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Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
ip igmp snooping
last-member-query-interval time
last-member-query-interval time
Configure the IGMP leave timer globally. The range is 100 to 5000
milliseconds. The default is 1000 seconds.
milliseconds. The default is 1000 seconds.
Step 3
ip igmp snooping vlan vlan-id
last-member-query-interval time
last-member-query-interval time
(Optional) Configure the IGMP leave time on the VLAN interface. The
range is 100 to 5000 milliseconds.
range is 100 to 5000 milliseconds.
Note
Configuring the leave time on a VLAN overrides the globally
configured timer.
configured timer.
Step 4
end
Return to privileged EXEC mode.
Step 5
show ip igmp snooping
(Optional) Display the configured IGMP leave time.
Step 6
copy running-config startup-config
(Optional) Save your entries in the configuration file.