3com S7906E 설치 설명서
1-11
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Before you can configure an interface of a PIM-SM device as a static member of a multicast group
or a multicast source and group, if the interface is PIM-SM enabled, it must be a PIM-SM DR; if this
interface is IGMP enabled but not PIM-SM enabled, it must be an IGMP querier. For more
information about PIM-SM and a DR, refer to PIM Configuration in the IP Multicast Volume.
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As a static member of a multicast group or a multicast source and group, the interface does not
respond to the queries from the IGMP querier, nor does it send an unsolicited IGMP membership
report or an IGMP leave group message when it joins or leaves a multicast group or a multicast
source and group. In other words, the interface will not become a real member of the multicast
group or the multicast source and group.
Configuring a Multicast Group Filter
To restrict the hosts on the network attached to an interface from joining certain multicast groups, you
can set an ACL rule on the interface as a packet filter so that the interface maintains only the multicast
groups matching the criteria.
Follow these steps to configure a multicast group filter:
To do...
Use the command...
Remarks
Enter system view
system-view
—
Enter interface view
interface interface-type
interface-number
interface-number
—
Configure a multicast group
filter
filter
igmp group-policy
acl-number [ version-number ]
acl-number [ version-number ]
Required
By default, no multicast group
filter is configured on this
interface, namely hosts on the
current interface can join any
valid multicast group
filter is configured on this
interface, namely hosts on the
current interface can join any
valid multicast group
Configuring the Maximum Number of Multicast Groups on an Interface
You can configure the allowed maximum number of multicast groups on an interface to flexibly control
the number of multicast groups the interface can join.
Follow these steps to configure the maximum number of multicast groups an interface can join:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enter interface view
interface interface-type
interface-number
interface-number
—
Configure the maximum
number of multicast groups that
can be joined on the current
interface
number of multicast groups that
can be joined on the current
interface
igmp group-limit limit
Required
1024 by default