Nortel Networks 40M2420 manual Info/l2/fdb, 13FDB Information Menu Options /info/l2/fdb

Alteon OS Command Reference

/info/l2/fdb

FDB Information

[Forwarding Database		Menu]
find	- Show	a single FDB entry by MAC address
port	- Show	FDB entries on a single port
trunk	- Show	FDB entries on a single trunk
vlan	- Show	FDB entries on a single VLAN
state	- Show	FDB entries by state
dump	- Show	all FDB entries

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 on the MP per switch.

Table 4-13FDB Information Menu Options (/info/l2/fdb)

Command Syntax and Usage

find <MAC address> [<VLAN>]

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.

port <port number or alias>

Displays all FDB entries for a particular port.

trunk <trunk number>

Displays all FDB entries for a particular trunk.

vlan <VLAN number (1-4095)>

Displays all FDB entries on a single VLAN.

state unknownforwardtrunk

Displays all FDB entries of a particular state.

dump

Displays all entries in the Forwarding Database. For more information, see page 77.

76 „ Chapter 4: The Information Menu 40M2420, April 2007