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3Com Switch 7750 Series
Command Reference Guide – Multicast Chapter 2 Common IP Multicast Configuration Commands
2-15
Description
Use the multicast-source-deny enable command to enable the multicast source port
suppression feature.
Use the undo multicast-source-deny enable command to restore the default setting.
By default, the multicast source port suppression feature is disabled on all the ports.
The multicast source port suppression feature can filter multicast packets on the
unauthorized multicast source port in order to avoid the case that the user connected to
the port sets the multicast server privately.
In the system view, if the interface-list argument is not specified, the multicast source
port suppression feature is enabled globally, that is, the feature is enabled on all the
ports of the switch; if the interface-list argument is specified, the multicast source port
suppression feature is enabled on the specified ports. In Ethernet port view, the
interface-list argument cannot be specified in the command and you can use the
command to enable the multicast source port suppression feature on the current port
only.
Example
# Enable the multicast source port suppression feature on all the ports of the switch.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] multicast-source-deny enable
# Enable the multicast source port suppression feature on Ethernet 1/0/1 through
Ethernet 1/0/10 and Ethernet 1/0/12.
[3Com] multicast-source-deny enable interface Ethernet 1/0/1 to Ethernet
1/0/10 Ethernet 1/0/12
2.1.13 reset multicast forwarding-table
Syntax
reset multicast forwarding-table [ statistics ] { all | { group-address [ mask
{ group-mask | group-mask-length } ] | source-address [ mask { source-mask |
source-mask-length } ] | incoming-interface interface-type interface-number } * }
View
User view
Parameter
statistics: Clears the statistics information about MFC forwarding entries if this
keyword is specified. Otherwise, MFC forwarding entries will be cleared.
all: Refers to all MFC forwarding entries.