H3C Technologies H3C WX6000 Series Access Controllers - Manual (Page 331)

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To do... Use the command... Remarks
Configure the source address of
IGMP general queries
igmp-snooping general-query
source-ip
{ current-interface |
ip-address }
Optional
0.0.0.0 by default
Configure the source IP address of
IGMP group-specific queries
igmp-snooping special-query
source-ip
{ current-interface |
ip-address }
Optional
0.0.0.0 by default
The source address of IGMP query messages may affect IGMP querier selection within the segment.
Configuring an IGMP Snooping Policy
Configuration Prerequisites
Before configuring an IGMP Snooping policy, complete the following task:
z
Enable IGMP Snooping in the VLAN
Before configuring an IGMP Snooping policy, prepare the following data:
z
ACL rule for multicast group filtering
z
The maximum number of multicast groups that can pass the ports
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 configured ACL
rule. If the port on which the report was heard can join this multicast group, the switch adds an entry for
this port in the IGMP Snooping forwarding table; 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.
Configuring a multicast group filter globally
Follow these steps to configure a multicast group filter globally:
To do... Use the command... Remarks
Enter system view system-view —
Enter IGMP Snooping view igmp-snooping —
Configure a multicast group filter
group-policy acl-number [ vlan
vlan-list ]
Required
No group filter is configured by
default, namely hosts can join any
multicast group.