3Com 3800 - Manual (Page 97)

Configuring FDB Entries 6-3
Configuring FDB
Entries To configure entries in the FDB, use the commands listed in Table 6-1.
FDB Configuration
Example
This example adds a permanent entry to the FDB:
create fdbentry 02:60:8c:12:34:56 vlan marketing port 4
The permanent entry has the following characteristics:
■
MAC address is 02608c123456
■
VLAN name is marketing
■
Port number for this device is 4
Displaying FDB
Entries To display FDB entries, use the command:
show fdb {all | | vlan | |
permanent}
Where:
■
all — displays all FDB entries
■
mac_address — displays the entry for a particular MAC address
■
vlan — displays the entries for a VLAN
Table 6-1 FDB Configuration Commands
Command Description
create fdbentry vlan
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 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