Specifications

DGS-3224TGR Gigabit Ethernet Switch CLI Reference Manual
clear fdb
Purpose
Used to clear the switch’s forwarding database of all dynamically learned MAC addresses.
Syntax clear fdb [vlan <vlan_name>|port <port>|all]
Description
This command is used to clear dynamically learned entries to the switch’s forwarding
database.
Parameters
<vlan_name> − The name of the VLAN on which the MAC address resides.
<port> − The port number corresponding to the MAC destination address. The switch will
always forward traffic to the specified device through this port.
all − Clears all dynamic entries to the switch’s forwarding database.
Restrictions
Only administrator-level users can issue this command.
Example Usage:
To clear all FDB dynamic entries:
DGS-3224TGR:4#clear fdb all
Command: clear fdb all
Success.
DGS-3224TGR:4#
show multicast_fdb
Purpose
Used to display the contents of the switch’s multicast forwarding database.
Syntax show mulitcast_fdb [vlan <vlan_name>|mac_address <macaddr>
Description
This command is used to display the current contents of the switch’s multicast MAC address
forwarding database.
Parameters
<vlan_name> − The name of the VLAN on which the MAC address resides.
<macaddr> − The MAC address that will be shown.
Restrictions
None.
Example Usage:
To display multicast MAC address table:
DGS-3224TGR:4#show multicast_fdb
Command: show multicast_fdb
VLAN Name : default
MAC Address : 01-00-5E-00-00-00
Egress Ports : 1-5, 21, 22
Mode : Static
Total Entries : 1
DGS-3224TGR:4#
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