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4.2.34 Spanning Tree->Forwarding DB->FDB by Port/MAC/VLAN
When the number of hosts increase on a network, the Forwarding Database grows sharply. Looking
for a MAC address can become time-consuming work. The system provides three different ways for
an administrator to look over MAC addresses; by a specified Port, sorted by MAC address, and by a
specified VLAN. A Set Age-Out time command is given to configure the time to remove a non-
recently-used entry. The modification on this timer is switch-wide.
The age-out time is the amount of time that an entry is kept in the bridge tables prior to being purged
(or aged). The range is between 10 seconds and 1,000,000 seconds. By industry standard, 300
seconds is the default.