Operation Manual – Multicast
H3C S3100 Series Ethernet Switches Chapter 2 IGMP Snooping Configuration
2-9
2.2.5 Configuring a Multicast Group Filter
On an IGMP Snooping-enabled switch, the configuration of a multicast group allows the
service provider to define restrictions on multicast programs available to different users.
In an actual application, when a user requests a multicast program, the user’s host
initiates an IGMP report. Upon receiving this report message, the switch checks the
report against the ACL rule configured on the receiving port. If the receiving port can
join this multicast group, the switch adds this port to the IGMP Snooping multicast
group list; otherwise the switch drops this report message. Any multicast data that has
failed the ACL check will not be sent to this port. In this way, the service provider can
control the VOD programs provided for multicast users.
Make sure that an ACL rule has been configured before configuring this feature.
I. Configuring a multicast group filter in system view
Table 2-8 Configure a multicast group filter in system view
Operation Command Remarks
Enter system view system-view
—
Configure a
multicast group filter
igmp-snooping
group-policy acl-number
[ vlan vlan-list ]
Required
No group filter is configured by
default, namely hosts can join
any multicast group.
II. Configuring a multicast group filter in Ethernet port view
Table 2-9 Configure a multicast group filter in Ethernet port view
Operation Command Remarks
Enter system view system-view
—
Enter Ethernet port view
interface interface-type
interface-number
—
Configure a multicast
group filter
igmp-snooping
group-policy acl-number
[ vlan vlan-list ]
Optional
No group filter is
configured by default,
namely hosts can join any
multicast group.