User`s guide

Signamax Connectivity System 065-7708, 065-7728, 065-7764
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Figure 2-54
2.4.6 MAC Address Aging Time
The Aging Time affects the learning process of the Switch. Dynamic forwarding table
entries, which are made up of the source and destination 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 30 to 1,000 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out-of-date or no longer exist.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 forward indecisions 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.
Static forwarding entries are not affected by the aging time.
Type the number of seconds that an inactive MAC address remains in the switch’s
address table. The valid range is 30~1,000 seconds. Default is 300 seconds.
Figure 2-55