Configuring A Multicast Group Filter; Configuring Multicast Source Port Filtering - 3Com 4510G Configuration Manual

Before configuring an IGMP Snooping policy, prepare the following data:
ACL rule for multicast group filtering
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 received 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...
Enter system view
Enter IGMP Snooping view
Configure a multicast group
filter
Configuring a multicast group filter on a port or a group of ports
Follow these steps to configure a multicast group filter on a port or a group of ports:
To do...
Enter system view
Enter Ethernet port/Layer 2
aggregate port view or port
group view
Configure a multicast group
filter

Configuring Multicast Source Port Filtering

With the multicast source port filtering feature enabled on a port, the port can be connected with
multicast receivers only rather than with multicast sources, because the port will block all multicast
data packets while it permits multicast protocol packets to pass.
Use the command...
system-view
igmp-snooping
group-policy acl-number
[ vlan vlan-list ]
Use the command...
system-view
interface interface-type
interface-number
port-group manual
port-group-name
igmp-snooping group-policy
acl-number [ vlan vlan-list ]
2-14
Remarks
—
—
Required
By default, no group filter is
globally configured, that is,
hosts in VLANs can join any
valid multicast group.
Remarks
—
Required
Use either approach
Required
By default, no group filter is
configured on the current port,
that is, hosts on this port can
join any valid multicast group.