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Management Guide
TigerAccess™ EE
9.2.1.1
!
9.2.1.2
9.2.1.3
SMC7824M/VSW
Blocking Unknown Multicast Traffic
When certain multicast traffic comes to a port and the McFDB has no forwarding informa-
tion for the traffic, the multicast traffic is flooded to all ports by default. You can configure
the switch not to flood unknown multicast traffic. To configure the switch not to flood un-
known multicast traffic, use the following command.
Command
ip unknown-multicast
[ port PORTS ] block
no ip unknown-multicast [ port
PORTS ] block
This command should not be used for the ports to which a multicast router is attached!
Forwarding Entry Aging
To specify the aging time for forwarding entries on the McFDB, use the following com-
mand.
Command
ip mcfdb aging-time
<10-10000000>
no ip mcfdb aging-time
To specify the maximum number of forwarding entries on the McFDB, use the following
command.
Command
ip mcfdb aging-limit
<256-65535>
no ip mcfdb aging-limit
Displaying McFDB Information
To display McFDB information, use the following command.
Command
show ip mcfdb
show ip mcfdb aging-entry [ vlan
VLAN | group A.B.C.D ] [ mac-
based | detail ]
Mode
Configures the switch not to flood unknown multicast
traffic.
Global
Configures the switch to flood unknown multicast traf-
fic. (default)
Mode
Specifies the aging time for forwarding entries on the
McFDB.
Global
10-10000000: aging time (default: 300)
Deletes the specified aging time for forwarding entries.
Mode
Specifies the maximum number of forwarding entries
on the McFDB.
256-65535: number of entries (default: 5000)
Global
Deletes the specified maximum number of forwarding
entries.
Mode
Shows the current aging time and maximum number of
forwarding entries.
Enable
Shows the current forwarding entries.
Global
VLAN: VLAN ID (1-4094)
Bridge
A.B.C.D: multicast group address
mac-based: lists entries on a MAC address basis
Description
Description
Description
Description
CLI
355
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