APC IP DSLAM User's Guide download pdf (Page 142)

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Application Note

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7.2.13 IGMP Snooping

IGMP snooping, as implied by the name, is a feature that allows an

Ethernet switch to "listen in" on the IGMP conversation between hosts

and routers. When a Switch hears an IGMP report from a host for a

given multicast group, the switch adds the host's port number to the

IGMP list for that group. And, when the switch hears an IGMP leave, it

removes the host's port from the IGMP list.

7.2.13.1 Scenario

7.2.13.2 Configuration

Step 1: create IGMP rule and map to the eoa ports

$ create filter rule entry ruleid 1 action sendtocontrol description IGMP

$ create filter subrule ip ruleid 1 subruleid 1 prototypefrom 2 prototypecmp

$ modify filter rule entry ruleid 1 status enable

$ create filter rule map ruleid 1 ifname eoa-0 stageid 1

$ create filter rule map ruleid 1 ifname eoa-1 stageid 1

$ create filter rule map ruleid 1 ifname eoa-2 stageid 1

$ create filter rule map ruleid 1 ifname eoa-3 stageid 1

$ create filter rule map ruleid 1 ifname eth-0 stageid 1

Setp 2: enable the igmpsnoop on bridge ports

$ modify igmpsnoop cfg info status enable

$ modify igmpsnoop port info portid 1 status enable

$ modify igmpsnoop port info portid 2 status enable

$ modify igmpsnoop port info portid 3 status enable

$ modify igmpsnoop port info portid 4 status enable

Step 3: Create multicast group on media server (IGMP version 2)

Add publish points on the specified media server.

Step 4: Join user1 to IGMP multicast group

Step 5: Join user2 to IGMP multicast group

Step 6: Join user3 to IGMP multicast group

Step 7: Join user4 to IGMP multicast group

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