5. Network Configuration of Ethernet
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Cable Segment and Link Segment
There are two types of the segment, the cable segment and link segment, in the concept of
segments specified in the IEEE802.3 standard. The differences between these two segments
affect the restrictions for expanding transmission lines. This section describes the differences
between these two segments.
Cable segment
A cable segment consists of a set of coaxial cables with their ends terminated with the
characteristic impedance. The transceiver (MAU) is installed to this segment to connect the
station. This segment is also called as a coaxial segment.
Link segment
A link segment is a cable for point-to-point connection with repeaters (or transceivers) at their
ends. No station is connected.
For the TOSDIC-CIE DS system, this refers to the following three segments.
•
An optical fiber cable with optical repeaters connected at both ends.
•
A segment which is a coaxial cable with electrical repeaters connected at both ends. No
station is connected.
•
A twisted pair cable that connects a hub and station in 10BASE-T (a hub is a type of
repeater).
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