IGMP Filter function is normally used by Service Provider to control the channels that users subscribed to. To enable IP IGMP Filter, use the following steps:

Step 1. Use the command "IP IGMP Filter"

SW_1(config)#ip igmp filter

Step 2. Create IP IGMP profile 1. Only multicast group from range 224.1.1.1 to 224.1.1.3 is permitted

SW_1(config)#ip igmp profile 1
SW_1(config-igmp-profile)#permit
SW_1(config-igmp-profile)#range 224.1.1.1 224.1.1.3

Step 3. Check the configuration

SW_1#sh ip igmp filter
 IGMP Filter Enabled

SW_1#sh ip igmp profile
 IGMP  Profile 1

SW_1#sh ip igmp profile 1
 IGMP  Profile 1
 Permit
 Range  224.1.1.1         224.1.1.3

Step 4. Apply IGMP filter profile 1 to port

SW_1(config)#int e 1/27
SW_1(config-if)#ip igmp filter 1

After IGMP filter profile 1 is applied to port 27, PC2 receives video stream from 224.1.1.1 to 3 only.

Please note that because IMGP filter blocks out the membership report packet of profile, PC2 receives video stream from 224.1.1.4 until "entry in multicast table time" is expiring.

SW_1#sh ip igmp snooping group
Bridge Multicast Forwarding Entry Count:7
Flag: R - Router port, M - Group member port
      H - Host counts (number of hosts join the group on this port).
      P - Port counts (number of ports join the group).
 Up time: Group elapsed time (d:h:m:s).
 Expire : Group remaining time (m:s).

VLAN Group           Port        Up time     Expire Count
---- --------------- ----------- ----------- ------ --------
   1 224.0.1.75                  00:00:34:45            2(P)
                     Eth 1/25(M) 00:00:34:45 03:54      1(H)
                     Eth 1/28(R)
   1 224.1.1.1                   00:00:00:16            2(P)
                     Eth 1/27(M) 00:00:00:16 04:05      1(H)
                     Eth 1/28(R)
   1 224.1.1.2                   00:00:25:59            2(P)
                     Eth 1/27(M) 00:00:25:59 03:55      1(H)
                     Eth 1/28(R)
   1 224.1.1.3                   00:00:25:39            2(P)
                     Eth 1/27(M) 00:00:25:39 03:51      1(H)
                     Eth 1/28(R)
   1 224.1.1.4                               00:24      1(P)
                     Eth 1/28(R)
   1 239.255.255.250             00:00:34:41            2(P)
                     Eth 1/ 1(M) 00:00:21:13 03:48      1(H)
                     Eth 1/28(R)
   1 239.255.255.254             00:00:34:43            2(P)
                     Eth 1/25(M) 00:00:34:43 03:56      1(H)
                     Eth 1/28(R)