D-Link TM DES-6500 manual Config fdb agingtime sec, Delete fdb vlanname 32 macaddr

xStack DES-6500 Modular Layer 3 Chassis Ethernet Switch CLI Manual

config fdb aging_time

Purpose	Used to set the aging time of the forwarding database.
Syntax	config fdb aging_time <sec 10-1000000>
Description	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 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	dynamic forwarding table entries that are out-of-date or no longer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.
Parameters	<sec 10-1000000>− The aging time for the MAC address
	forwarding database value. The value in seconds may be between
	10 and 1000000 seconds. The default is 300 seconds.
Restrictions	Only administrator-level users can issue this command.

Example usage:

To set the fdb aging time:

DES-6500:4#config fdb aging_time 300

Command: config fdb aging_time 300

Success.

DES-6500:4#

delete fdb

Purpose	Used to delete an entry to the Switch’s forwarding database.
Syntax	delete fdb <vlan_name 32> <macaddr>
Description	This command is used to delete a previous entry to the Switch’s
	MAC address forwarding database.
Parameters	<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.
Restrictions	Only administrator-level users can issue this command.

Example usage:

To delete a permanent FDB entry:

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