Command Line Interface Reference Guide > The Maintenance Menu > /maint/fdb Forwarding Database (FDB) Manipulation Menu
/maint/fdb
Forwarding Database (FDB) Manipulation Menu
Use the FDB Manipulation menu to view information in, and 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.
 
[FDB Manipulation Menu]
find - Show a single FDB entry by MAC address
findsp - Show a single SP FDB entry by MAC address
unk - Show UNK, IGN and FLD FDB entries
port - Show FDB entries for a single port
trunk - Show FDB entries on a single trunk
vlan - Show FDB entries for a single VLAN
refpt - Show FDB entries referenced by a single SP
 empty - Show FDB entries not referenced by any SP
dump - Show all FDB entries
del - Delete an FDB entry
clear - Clear entire FDB
 
FDB Manipulation Menu Options (/maint/fdb) 
Command Syntax and Usage
find <MAC address> [<VLAN>]
 
Displays a single database entry by its MAC address. You are prompted to enter the Alteon MAC address. Enter the MAC address using one of the following formats:
*xx:xx:xx:xx:xx:xx (for example: 08:00:20:12:34:56)
*xxxxxxxxxxxx (for example: 080020123456).
findsp <MAC address>
 
Shows a single SP FDB entry by its MAC address. You are prompted to enter the Alteon MAC address. Enter the MAC address using one of the following formats:
*xx:xx:xx:xx:xx:xx (for example: 08:00:20:12:34:56)
*xxxxxxxxxxxx (for example: 080020123456).
unk
 
Shows UNK, IGN and FLD FDB entries.
port <port number, 0 for unknown>
 
Displays all FDB entries for a particular port.
Values:
*Port number
*0 — An unknown port number
trunk <trunk number (1-12)>
 
Displays all FDB entries for the specified trunk group.
vlan <VLAN number (1-4090)>
 
Displays all FDB entries on a single VLAN.
refpt <SP number (1-4)>
 
Displays all FDB entries reference by a single SP.
empty
 
 
Shows FDB entries not referenced by any SP.
dump
 
 
Displays all entries in the forwarding database. For details, see /info/l2 Layer 2 Information Menu.
del <MAC address> [ <VLAN number> ]
 
Removes a single FDB entry.
clear
 
Clears the entire forwarding database from memory.