Cisco HWIC-4ESW and HWIC-D-9ESW EtherSwitch Interface Cards
How to Configure EtherSwitch HWICs
62
Book Title
Enabling or Disabling IGMP Snooping
By default, IGMP snooping is globally enabled on the EtherSwitch HWIC. When globally enabled or
disabled, it is also enabled or disabled in all existing VLAN interfaces. By default, IGMP snooping is
enabled on all VLANs, but it can be enabled and disabled on a per-VLAN basis.
Global IGMP snooping overrides the per-VLAN IGMP snooping capability. If global snooping is
disabled, you cannot enable VLAN snooping. If global snooping is enabled, you can enable or disable
snooping on a VLAN basis.
Follow the steps below to globally enable IGMP snooping on the EtherSwitch HWIC.
SUMMARY STEPS
1.
enable
2.
configure terminal
3.
ip igmp snooping
4.
end
5.
show ip igmp snooping
6.
copy running-config startup-config
DETAILED STEPS
Command
Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
•
Enter your password if prompted.
Step 2
configure
terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
ip igmp snooping
Example:
Router(config)#
ip igmp snooping
Globally enables IGMP snooping in all existing VLAN
interfaces.
Step 4
end
Example:
Router(config)# end
Returns to privileged EXEC mode.
