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Extended Distance Limitations:
The diameter of a half-duplex LAN segment is determined by its maximum
propagation delay time. For example, in 10M LAN, the most distance of a LAN
segment using cable is 2500 meters and 185 meters when using coaxial cable. The
switch with its per port per collision domain can extend the distance like a bridge
does. And what’s more, when operating in full-duplex mode, the distance can reach
farther than half duplex because it is not limited by the maximum propagation delay
time (512 bits time). If fiber media is applied, the distance can be up to tens of
kilometers.
Traffic Aggregation:
Traffic aggregation is to aggregate the bandwidth of more than one port and
treat it as a single port ina LAN. This single port possesses all the features of a
normal port but loading balance.
This is a great feature for a port which needs more
bandwidth when cost more for higher bandwidth is not possible.
Fig.3-5 Collision Domain