Configuring The Maximum Number Of Forwarding Entries In A Multicast Vlan; Displaying And Maintaining Multicast Vlan; Multicast Vlan Configuration Examples; Sub-Vlan-Based Multicast Vlan Configuration - 3Com S7906E Configuration Manual

Configuring the Maximum Number of Forwarding Entries in a
Multicast VLAN
You can configure the maximum number of entries in the IGMP Snooping forwarding table of a multicast
VLAN. When the number of forwarding entries maintained for a multicast VLAN reaches the threshold,
the device creates no more forwarding entries until some entries time out or get manually removed.
Follow these steps to configure the maximum number of entries in the forwarding table
To do...
Enter system view
Configure the maximum
number of forwarding entries in
a multicast VLAN
If the number of existing entries in the IGMP Snooping forwarding table of a multicast VLAN is larger
than the limit when you configure it, the system informs you to remove excessive entries. In this case,
the system does not automatically remove any existing entries or create new entries.

Displaying and Maintaining Multicast VLAN

To do...
Display information about a
multicast VLAN

Multicast VLAN Configuration Examples

Sub-VLAN-Based Multicast VLAN Configuration

Network requirements
Router A connects to a multicast source through GigabitEthernet2/0/1 and to Switch A, through
GigabitEthernet 2/0/2.
IGMPv2 is required on Router A, and IGMPv2 Snooping is required on Switch A. Router A is the
IGMP querier.
Switch A's GigabitEthernet 2/0/1 belongs to VLAN 10, GigabitEthernet 2/0/2 through
GigabitEthernet2/0/4 belong to VLAN 2 through VLAN 4 respectively, and Host A through Host C
are attached to GigabitEthernet 2/0/2 through GigabitEthernet 2/0/4 of Switch A respectively.
The multicast source sends multicast data to multicast group 224.1.1.1. Host A, Host B, and Host C
are receivers of the multicast group.
Use the command...
system-view
multicast-vlan entry-limit limit
Use the command...
display multicast-vlan
[ vlan-id ]
1-7
Remarks
—
Required
1000 by default.
Remarks
Available in any view