Config Fdb Aging_Time - Extreme Networks EAS 200-24p Switch CLI Manual

Chapter 22: Filter Database (FDB) Command List

config fdb aging_time

Description
This command is used to configure the MAC address table aging time.
Format
config fdb aging_time <sec 10-1000000>
Parameters
aging_time - Specifies the FDB age out time in seconds. 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very long aging time can result in dynamic forwarding table entries that are out-of-date or no longer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.
<sec 10-1000000> - The FDB age out time must be between 10 to 1000000 seconds.
●
Restrictions
Only Administrator, Operator and Power-User level users can issue this command.
Example
To configure the MAC address table aging time to 600 seconds:
EAS 200-24p:admin# config fdb aging_time 600
Command: config fdb aging_time 600
Success.
EAS 200-24p:admin#
350
Extreme Networks EAS 200-24p Switch CLI Manual