Config Fdb Aging_Time; Delete Fdb; To Set The Fdb Aging Time; To Delete A Permanent Fdb Entry - D-Link DES-3010F Command Line Interface Reference Manual

config fdb aging_time

Purpose
Syntax
Description
Parameters
Restrictions
Example usage:

To set the fdb aging time:

DES-3026:4#config fdb aging_time 300
Command: config fdb aging_time 300
Success.
DES-3026:4#

delete fdb

Purpose
Syntax
Description
Parameters
Restrictions
Example usage:

To delete a permanent FDB entry:

DES-30XX Layer 2 Switch CLI Reference Manual
Used to set the aging time of the forwarding database.
config fdb aging_time <sec 10-1000000>
The aging time affects the learning process of the Switch. Dynamic
forwarding table entries, which are made up of the source MAC
addresses and their associated port numbers, are deleted from the
table if they are not accessed within the aging time. The aging time
can be from 10 to 1000000 seconds with a default value of 5
minutes (300 seconds). A very long aging time can result in dynamic
forwarding table entries that are out-of-date or no longer exist. This
may cause incorrect packet forwarding decisions by the Switch. If
the aging time is too short however, many entries may be aged out
too soon. This will result in a high percentage of received packets
whose source addresses cannot be found in the forwarding table, in
which case the Switch will broadcast the packet to all ports, negating
many of the benefits of having a Switch.
<sec 10-1000000> − The aging time for the MAC address
forwarding database value, in seconds.
Only administrator-level users can issue this command.
Used to delete an entry to the Switch's forwarding database.
delete fdb <vlan_name 32> <macaddr>
This command is used to delete a previous entry to the Switch's
MAC address forwarding database.
<vlan_name 32> − The name of the VLAN on which the MAC
address resides.
<macaddr> − The MAC address that will be deleted from the
forwarding table.
Only administrator-level users can issue this command.
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