H3C S7500 Series Ethernet Switches Operation Manual

Operation Manual – Multicast
H3C S7500 Series Ethernet Switches Chapter 3
IGMP Snooping Configuration
3-9
filtering ACL configuration on the receiving port to determine whether the port can join
the corresponding multicast group. If yes, it adds the port to the forwarding port list of
the multicast group. If not, it drops the IGMP report message and does not forward the
corresponding data streams to the port. In this way, you can control the multicast
streams that users can access.
Make sure that ACL rules have been configured before configuring this feature.
Follow these steps to configure IGMP Snooping filtering ACLs:
To do... Use the command... Remarks
Enter system view system-view —
Enable the IGMP
Snooping filtering
feature in system
view
igmp-snooping
group-policy
acl-number [ vlan
vlan-list ]
Optional
z You can configure the ACL to
filter the IP addresses of
corresponding multicast
groups.
z By default, the multicast
filtering feature is disabled.
Enter Ethernet port
view
interface interface-type
interface-number
—
Configure the
multicast filtering
feature on the port
igmp-snooping
group-policy
acl-number [ vlan
vlan-list ]
Optional
z You can configure the ACL to
filter the IP addresses of the
corresponding multicast
group.
z By default, the multicast
filtering feature is disabled.
 Note:
z One port can belong to multiple VLANs. Only one ACL rule can be configured in
each of the VLANs to which the port belongs.
z If the port does not belong to the VLAN where the command is configured, the
configured ACL rule does not take effect.
z If no ACL rule is configured in the command, the multicast packets of all the
multicast groups are rejected.
z Most devices broadcast unknown multicast packets. In order that multicast packets
are not sent to filtered ports as unknown multicast packets, this feature is generally
used together with the unknown multicast drop function.