Technical data

RackSwitch G8124 Command Reference
Chapter 7: Maintenance Commands
 205BMD00076, January 2009
Forwarding Database Maintenance
The Forwarding Database commands can be used to view information, to delete a MAC
address from the forwarding database, or to clear the entire forwarding database. This is
helpful in identifying problems associated with MAC address learning and packet forwarding
decisions.
Table 7-2 FDB Manipulation Commands
Command Syntax and Usage
show mac-address-table address {<MAC address>}
Displays a single database entry by its MAC address. You are prompted to enter the MAC address
of the device. Enter the MAC address using the following formats:
xx:xx:xx:xx:xx:xx format (such as 08:00:20:12:34:56)
or
xxxxxxxxxxxx format (such as 080020123456)
Command mode: All
show mac-address-table port {<port alias or number>}
Displays all FDB entries for a particular port.
Command mode: All
show mac-address-table vlan {<VLAN number (1-4094)>}
Displays all FDB entries on a single VLAN.
Command mode: All
show mac-address-table
Displays all entries in the Forwarding Database.
Command mode: All
clear mac-address-table
Clears the entire Forwarding Database from switch memory.
Command mode: All except User EXEC