Configuring Fdb Entries; Fdb Configuration Example; Displaying Fdb Entries - 3Com 3800 User Manual

3com switch user guide
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Configuring FDB
Entries
Table 6-1 FDB Configuration Commands
Command
create fdbentry <mac_address> vlan
<name> <portlist>
config fdb agingtime <delay>
FDB Configuration
Example
Displaying FDB
Entries
To configure entries in the FDB, use the commands listed in Table 6-1.
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
To display FDB entries, use the command:
show fdb {all | <mac_address> | vlan <name> | <portlist> |
permanent}
Where:
all — displays all FDB entries
mac_address — displays the entry for a particular MAC address
vlan <name> — displays the entries for a VLAN
Description
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.
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.
Configuring FDB Entries
6-3

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