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DES-7200 Configuration Guide Chapter 8 IGMP Snooping
Configuration
8-27
DES-7200(config)# end
8.2.16.3 Configuring IGMP Filtering
In some cases, you may need to limit a port to receive a specified set of multicast
data flows, and control the maximum number of multicast groups that the port is
allowed to join dynamically IGMP Filtering can address this requirement.
You can apply one IGMP Profile to a port. If the port receives the IGMP Report
message, the switch will check if the IP address of the multicast group that the
port wants to join is permitted by the IGMP Profile. If so, the switch allows it to join
the multicast group.
You can also configure the maximum number of multicast groups that the port is
allowed to join. If the number of the multicast groups that the port joins exceeds
the threshold, the switch will no longer receive or handle the IGMP Report
message.
To enable IGMP Filtering, execute the following commands in the global
configuration mode:
Command Function
DES-7200(config)# interface
interface-id
Enter the interface configuration interface.
DES-7200(config-if)# ip igmp snooping
filter profile-number
(Optional) Apply a profile to the interface.
The profile number ranges from 1 to 1024.
DES-7200(config-if)# ip igmp snooping
max-groups number
(Optional) Specify the maximum number of
multicast groups that the interface can join,
in the range of 0 to 1024.
DES-7200(config-if)# no ip igmp
snooping
max-groups
(Optional) Restore the max-groups to the
default value.
The example below shows how to configure IGMP Flitering:
DES-7200# configure terminal
DES-7200(config)# interface fastEthernet 0/1
DES-7200(config-if)# ip igmp snooping filter 1
DES-7200(config-if)# ip igmp snooping max-groups 1000
DES-7200 (config-if)#end
DES-7200 #show ip igmp snooping interface fastEthernet 0/1
Interface Filter profile number max-group
--------------- --------------------- ---------
FastEthernet 0/1 1 1000
8.3 Showing IGMP Snooping Information
8.3.1 Showing Current Mode
To view the current operation mode and global configuration of IGMP Snooping,
execute the following command in the privileged mode:
Command Function
DES-7200# show ip igmp
snooping
View the current operation mode and global
configuration of IGMP Snooping.
The following example uses the show ip igmp snooping command to view the
IGMP Snooping configuration information:
DES-7200# show ip igmp snooping
IGMP-snooping mode : IVGL
SVGL vlan-id : 1
SVGL profile number : 0