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24-port NWay Ethernet Switch User’s Guide
30 Switch Management Concepts
Packet Forwarding
The Switch learns the network configuration and uses this
information to forward packets. This reduces the traffic
congestion on the network, because packets, instead of
being transmitted to all segments, are transmitted to the
destination only. Example: if Port 1 receives a packet
destined for a station on Port 2, the Switch transmits that
packet through Port 2 only, and transmits nothing through
the other ports.
Aging Time
The Aging Time is a parameter that affects the auto-learn
process of the Switch in terms of the network
configuration. Dynamic Entries, which make up the auto-
learned-node address, are aged out of the address table
according to the Aging Time that you set.
The Aging Time can be from 10 seconds to 9999 seconds. A
very long Aging Time can result with the out-of-date
Dynamic Entries that may cause incorrect packet
filtering/forwarding decisions.
In the opposite case, if the Aging Time is too short, many
entries may be aged out soon, resulting in a high
percentage of received packets whose source addresses
cannot be found in the address table, in which case the
switch will broadcast the packet to all ports, negating
many of the benefits of having a switch.