55
config switch system_agingtime
Purpose
Used to set the aging time of the forwarding
database.
Syntax
config switch system_agingtime <value
0~1000000 sec>
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
0
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out-of-date or no longer exist.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
<value 0~1000000 sec> -
The aging time for the
MAC address forwarding database value. The
value in seconds may be between
0
and
1000000 seconds. 0 means never age out the
forwarding entries
Example usage:
To set the aging time:
Figure 51. config switch system_agingtime command
