LECTURE #43
Ethernet
10 Base 2: Thin Ethernet
oThe second Ethernet Implementation defined by IEEE 802 series is called 10 Base
2, Thin Ethernet, Thin net
oAlso called Cheap net because it provides an inexpensive alternative to 10 Base 5
Ethernet, with the same data rate
oLike 10 Base 5, 10 Base 2 is a Bus Topology LAN
o10 Base 2: Thin Ethernet
xThe advantages of thin Ethernet are :
–reduced cost and
–ease of installation
Because the cable is lighter weight and more flexible than that used in Thicknet
xThe disadvantages are:
–Short Range (185 m as opposed to 500 m)
–Smaller Capacity (thinner cable accommodates fewer stations)
Physical Topology of 10 base 2
oThe connectors and cables utilized are: NICs, Thin coaxial cable and BNC-T
connectors
oIn this technology, the transceiver circuitry is moved to the NIC, and
transceiver tap is replaced by connector that splices directly into the cable
oNo AUI cables are needed
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