Technical data

RackSwitch G8124 Command Reference
Chapter 2: Information Commands
 43BMD00076, January 2009
Forwarding Database Information
The Forwarding Database (FDB) contains information that maps the media access control
(MAC) address of each known device to the switch port where the device address was learned.
The FDB also shows which other ports have seen frames destined for a particular MAC
address.
NOTE – The master Forwarding Database supports up to 16K MAC address entries.
Table 2-14 FDB Information Commands
Command Syntax and Usage
show mac-address-table
Displays all entries in the Forwarding Database. To view an example of the command output, see
page 44.
Command mode: All
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 format, xx:xx:xx:xx:xx:xx. For example,
08:00:20:12:34:56
You can also enter the MAC address using the format, xxxxxxxxxxxx.
For example, 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 portchannel <trunk group number>
Displays all FDB entries for a particular trunk group.
Command mode: All
show mac-address-table state {forward|trunk|unknown}
Displays all FDB entries for a particular state.
Command mode: All