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xStack® DES-3200 Series Layer 2 Ethernet Managed Switch CLI Reference Guide
119
clear fdb
Purpose
Used to clear the Switch’s forwarding database of all dynamically
learned MAC addresses.
Syntax
clear fdb [vlan <vlan_name 32> | port <port> | all]
Description
This command is used to clear dynamically learned entries to the
Switch’s forwarding database.
Parameters
<vlan_name 32> − The name of the VLAN on which the MAC
address resides.
port <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:
DES-3200-28:4#clear fdb all
Command: clear fdb all
Success.
DES-3200-28:4#
show multicast_fdb
Purpose
Used to display the contents of the Switch’s multicast forwarding
database.
Syntax
show multicast_fdb {vlan <vlan_name 32> | 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 32> − The name of the VLAN on which the MAC
address resides.
<macaddr> − Specifies a MAC address for which FDB entries will
be displayed.
If no parameter is specified, all multicast FDB entries will be
displayed.
Restrictions
None.