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config fdb aging_time
Purpose
Syntax
Description
Parameters
Restrictions
Example usage:
To set the FDB aging time:
DAS-3626:admin#config fdb aging_time 300
Command: config fdb aging_time 300
Success.
DAS-3626:admin#
delete fdb
Purpose
Syntax
Description
Parameters
Restrictions
Example usage:
To delete a permanent FDB entry:
DAS-3626:admin#delete fdb default 00-00-00-00-01-02
Command: delete fdb default 00-00-00-00-01-02
Success.
DAS-3626:admin#
DAS-3600 Series Ethernet over VDSL Switch CLI Reference Manual
Used to set the aging time of the forwarding database.
config fdb aging_time <sec 10-1000000>
This command 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 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result in dynamic forwarding table entries that are out-of-date or no longer exist.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. The
value in seconds may be between 10 and 1000000 seconds.
Only Administrator and Operator-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 added to the forwarding table.
Only Administrator and Operator-level users can issue this command.
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