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Command Line Interface 40FDB information menuCommand: /info/l2/fdb[Forwarding Database Menu]find - Show a single FDB entry by MAC addressport - Show FDB entries on a single portvlan - Show FDB entries on a single VLANstate - Show FDB entries by statedump - Show all FDB entriesThe forwarding database (FDB) contains information that maps the media access control (MAC) address of eachknown device to the switch port where the device address was learned. The FDB also shows which other portshave seen frames destined for a particular MAC address.NOTE: The master forwarding database supports up to 8K MAC address entries on the managementprocessor (MP) per switch.Table 28 FDB information menuCommand Usagefind [] Displays a single database entry by its MAC address. You areprompted to enter the MAC address of the device.Enter the MAC address using the format: xx:xx:xx:xx:xx:xx. (Forexample: 08:00:20:12:34:56)You can also enter the MAC address using the format: xxxxxxxxxxxx.(For example: 080020123456)port Displays all FDB entries for a particular port.vlan <1-4095> Displays all FDB entries on a single VLAN. The range is 1-4095.state unknown|forward|trunk Displays all FDB entries that match a particular state.dump Displays all entries in the Forwarding Database.Show all FDB informationCommand: /info/l2/fdb/dumpMAC address VLAN Port Trnk State----------------- ---- ---- ---- -----00:02:01:00:00:00 300 1 TRK00:02:01:00:00:01 300 23 FWD00:02:01:00:00:02 300 23 FWD00:02:01:00:00:03 300 23 FWD00:02:01:00:00:04 300 23 FWD00:02:01:00:00:05 300 23 FWD00:02:01:00:00:06 300 23 FWD00:02:01:00:00:07 300 23 FWD00:02:01:00:00:08 300 23 FWD00:02:01:00:00:09 300 23 FWD00:02:01:00:00:0a 300 23 FWD00:02:01:00:00:0b 300 23 FWD00:02:01:00:00:0c 300 23 FWDAn address that is in the forwarding (FWD) state indicates that the switch has learned it. When in the trunking(TRK) state, the Trnk field displays the trunk group number. If the state for the port is listed as unknown (UNK), theMAC address has not yet been learned by the switch, but has only been seen as a destination address. When anaddress is in the unknown state, no outbound port is indicated.Clearing entries from the forwarding databaseTo delete a static MAC address from the forwarding database (FDB), see the “Static FDB configuration” section inthe “Configuration Menu” chapter. To clear the entire forwarding database (FDB), see the “Forwarding Databaseoptions” section in the “Maintenance Menu” chapter.
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