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Network Planning
2
Remote Connection with Fiber Cable
Fiber optic technology allows for longer cabling than any other media type. A 
1000BASE-SX (MMF) link can connect to a site up to 550 meters away, a 
1000BASE-LX (SMF) link up to 5 km, and a 1000BASE-LH link up to 70 km. This 
allows a Gigabit Ethernet Switch to serve as a collapsed backbone, providing direct 
connectivity for a widespread LAN. 
A 1000BASE-SX SFP transceiver can be used for a high-speed connection between 
floors in the same building, a 1000BASE-LX SFP can be used to connect to other 
buildings in a campus setting, and a 1000BASE-LH SFP transceiver can be used for 
a long-haul connection to a remote site.
The figure below illustrates this switch connecting multiple segments with fiber 
cable.
Figure 2-3  Remote Connection with Fiber Cable
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...
Headquarters
1000BASE-LX SMF
(5 kilometers)
Remote Switch
10/100/1000 Mbps Segments
1000BASE-LH SMF
(70 kilometers)
Remote Switch
Server Farm
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