BRDGING BETWEEN BUILDINGS:
If two buildings are placed far from each other, a bridge, a pair of fiber modems and an optical fiber may be used to locate two LANs as given in the figure below.
BRIDGING BETWEEN BUILDINGS:
An optical fiber modem pair is effective to connect several computers located on separate buildings.
There is no need to modify the wiring between the buildings when removing and installing a computer.
The traffic on every building does not affect the other.
BUIDING ACROSS LONGER DISTANCES:
It is not possible to join two sites with optical fiber because the distance may be too big. It is generally not allowed to lay an optical fiber if the land does not related to you.
There are two basic methods to join two distant sites.