LYCOS RETRIEVER 
Ethernet: Ends
built 631 days ago
Ethernet would be of little value if it was truly limited by the 100 meter segment requirement. To overcome this shortcoming, repeaters are used. The repeater functions exactly as its name suggests--it repeats and amplifies any signal that passes through it. It is essentially a dumb box, meaning that it does nothing but take data in at one end then repeat it louder out the other.
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To make sure that the collision is recognized, Ethernet requires that a station must continue transmitting until the 50 microsecond period has ended. If the station has less than 64 bytes of data to send, then it must pad the data by adding zeros at the end.
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[One] trick is to reduce the Ethernet line speed to 10Mb Full Duplex. This reduces the risk of packet collisions at distance. If you have to, use a low cost 10Mb switch to front end your equipment at the head end. The Enable-IT 820 manual ... recommends the same advice. For more details see : http://www.enableit.com/820.html
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