H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 25)

16
Step Command Remarks
4. Configure a source IP
address for the IGMP leave
messages that the proxy
sends.
igmp-snooping leave source-ip
{ ip-address | current-interface }
The default is 0.0.0.0.
Configuring an IGMP snooping policy
Before you configure an IGMP snooping policy, complete the following tasks:
• Enable IGMP snooping in the VLAN
• Determine the ACL rule for multicast group filtering
• Determine the maximum number of multicast groups that a port can join
• Determine the 802.1p precedence for IGMP messages
Configuring a multicast group filter
On an IGMP snooping–enabled AC, the configuration of a multicast group allows the service provider
to define restrictions on multicast programs available to different users.
In an application, when a user requests a multicast program, the user's host initiates an IGMP report.
After receiving this report message, the AC compares the report against the configured ACL rule. If the
port that received the report can join this multicast group, the AC adds an entry for this port in the IGMP
snooping forwarding table. Otherwise, the AC drops this report message. Any multicast data that has
failed the ACL check is not 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
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter IGMP-snooping view. igmp-snooping N/A
3. Configure a multicast group
filter. group-policy acl-number [ vlan
vlan-list ]
By default, no group filter is
globally configured. That is, the
hosts in a VLAN can join any valid
multicast group.
Configuring a multicast group filter on a port
Step Command Remarks
1. Enter system view. system-view N/A