3com 3800 Manual Do Utilizador

To configure entries in the FDB, use the commands listed in Table 6-1.

This example adds a permanent entry to the FDB:

The permanent entry has the following characteristics:

■

MAC address is 02608c123456

■

VLAN name is marketing

■

Port number for this device is 4

To display FDB entries, use the command:

show fdb {all | <mac_address> | vlan <name> | <portlist> | 

permanent}

Where:

■

 

— displays all FDB entries

■

mac_address — displays the entry for a particular MAC address

■

vlan <name> — displays the entries for a VLAN

Table 6-1   FDB Configuration Commands 

create fdbentry <mac_address> vlan
<name> <portlist>

Allows you to create a permanent FDB entry. Specify the 
following:

■

mac_address — Device MAC address, using colon 
separated bytes

■

name — VLAN associated with MAC address

■

portlist — Port number associated with MAC address

If more than one port number is associated with a 
permanent MAC entry, packets will be multicast to the 
multiple destinations.

config fdb agingtime <delay>

Allows you to configure the FDB ageing time. The range is 
15 through 1,000,000 seconds. The default value is 1800 
seconds. A value of 0 indicates that the entry should 
never be aged out.

SW3800.BK  Page 3  Tuesday, May 5, 1998  5:20 PM