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Chapter 24
Configuring IGMP Snooping and MVR
Configuring a Blade Server Statically to Join a Group
Blade servers that are connected to Layer 2 ports normally join multicast groups dynamically. You can
also statically configure a Layer 2 port, to which a blade server is connected, so that the port joins a
multicast group.
Beginning in privileged EXEC mode, follow these steps to add a Layer 2 port as a member of a multicast
group:
Command
Step 1
configure terminal
Step 2
ip igmp snooping vlan vlan-id static ip_address
interface interface-id
Step 3
end
Step 4
show ip igmp snooping groups
Step 5
copy running-config startup-config
To remove the Layer 2 port from the multicast group, use the no ip igmp snooping vlan vlan-id static
mac-address interface interface-id global configuration command.
This example shows how to statically configure a blade server on a port:
Switch# configure terminal
Switch(config)# ip igmp snooping vlan 105 static 224.2.4.12 interface gigabitethernet1/0/1
Switch(config)# end
Enabling IGMP Immediate Leave
When you enable IGMP Immediate Leave, the switch immediately removes a port when it detects an
IGMP Version 2 leave message on that port. You should only use the Immediate-Leave feature when
there is a single receiver present on every port in the VLAN.
Immediate Leave is supported only on IGMP Version 2 blade servers.
Note
Beginning in privileged EXEC mode, follow these steps to enable IGMP Immediate Leave:
Command
Step 1
configure terminal
Step 2
ip igmp snooping vlan vlan-id
immediate-leave
Step 3
end
OL-13270-06
Purpose
Enter global configuration mode.
Statically configure a Layer 2 port as a member of a multicast
group:
vlan-id is the multicast group VLAN ID. The range is 1 to
•
1001 and 1006 to 4094.
ip-address is the group IP address.
•
interface-id is the member port. It can be a physical
•
interface or a port channel (1 to 64).
Return to privileged EXEC mode.
Verify the member port and the IP address.
(Optional) Save your entries in the configuration file.
Purpose
Enter global configuration mode.
Enable IGMP Immediate Leave on the VLAN interface.
Return to privileged EXEC mode.
Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
Configuring IGMP Snooping
24-11
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