HP BMD00022 Forwarding Database options, Debugging options, Command /maint/fdb, Find MAC address

Forwarding Database options

Command: /maint/fdb

[FDB Manipulation Menu]

find	- Show a single FDB entry by MAC address
port	- Show FDB entries for a single port
vlan	- Show		FDB	entries for a single VLAN
dump	-	Show	all	FDB entries
clear	-	Clear entire FDB, then re-add static entries

The Forwarding Database (FDB) Manipulation Menu can be used to view information and to delete a MAC address from the Forwarding Database or clear the entire Forwarding Database. This is helpful in identifying problems associated with MAC address learning and packet forwarding decisions.

The following table describes the FDB Manipulation Menu options.

Table 198 FDB Manipulation Menu options

Command	Usage
find <MAC address> [<1-4094>]	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 one of the following:
	• xx:xx:xx:xx:xx:xx format (for example:
	08:00:20:12:34:56)
	• xxxxxxxxxxxx format (for example: 080020123456)
port <port number>	Displays all FDB entries for a particular port.
vlan <1-4094>	Displays all FDB entries on a single VLAN.
dump	Displays all entries in the Forwarding Database.
clear	Clears the entire Forwarding Database from switch memory, and
	then adds the static entries to the Forwarding Database.

Debugging options

Command: /maint/debug

[Miscellaneous Debug			Menu]
tbuf	- Show		MP trace buffer
snap	-	Show	MP snap (or post-mortem) trace buffer
clrcfg	-	Clear all flash configs

The Miscellaneous Debug Menu displays trace buffer information about events that can be helpful in understanding switch operation. You can view the following information using the Debug Menu:

•Events traced by the management processor (MP)

•Events traced to a buffer area when a reset occurs

If the switch resets for any reason, the management processor (MP) trace buffer is saved into the snap trace buffer area. The output from these commands can be interpreted by HP technical support.

Maintenance Menu 218