Configuring Dropping Unknown Multicast Packets; Displaying And Maintaining Common Multicast Configuration - 3Com E4500-24 Cli Configuration Manual

If the multicast MAC address entry to be created already exists, the system gives you a prompt.
If you want to add a port to a multicast MAC address entry created through the mac-address
multicast command, you need to remove the entry first, create this entry again, and then add the
specified port to the forwarding ports of this entry.
You cannot enable link aggregation on a port on which you have configured a multicast MAC
address, and you cannot configure a multicast MAC address on an aggregation port.
You cannot
IGMP-Snooping-enabled VLAN. You can do that if IGMP Snooping is not enabled in the VLAN.

Configuring Dropping Unknown Multicast Packets

Generally, if the multicast address of the multicast packet received on the switch is not registered on the
local switch, the packet will be flooded in the VLAN which the multicast packet belongs to. When the
function of dropping unknown multicast packets is enabled, the switch will drop any multicast packets
whose multicast address is not registered. Thus, the bandwidth is saved and the processing efficiency
of the system is improved.
Follow these steps to configure dropping unknown multicast packet:
To do...
Enter system view
Configure dropping unknown
multicast packets

Displaying and Maintaining Common Multicast Configuration

Follow these commands to display common multicast configuration:
To do...
Display the statistics
information about multicast
source port suppression
Display the created multicast
MAC table entries
configure a multicast
Use the command...
system-view
unknown-multicast drop
enable
Use the command...
display
multicast-source-deny
[ interface interface-type
[ interface-number ] ]
display mac-address
multicast [ static
{ { { mac-address vlan vlan-id |
vlan vlan-id } [ count ] } |
count } ]
MAC address starting
—
Required
By default, the function of
dropping unknown multicast
packets is disabled.
Available in any view
Available in any view
1-3
with 01005e in an
Remarks
Remarks