Nortel Networks BMD00007 manual Info/l2/fdb, FDB Information

Alteon OS Command Reference

Table 4-12Layer 2 Menu Options (/info/l2)

Command Syntax and Usage

dump

Dumps all switch information available from the Layer 2 menu (10K or more, depending on your configuration).

If you want to capture dump data to a file, set your communication software on your workstation to capture session data prior to issuing the dump commands.

/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
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.

vlan <VLAN number (1-4095)>

Displays all FDB entries on a single VLAN.

76 „ The Information Menu BMD00007, November 2007