Network Planning

2-4

2
Remote Connections 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, providin g direct
connectivity for a widespread LAN.
The figure below illustrates this switch connecting multiple segments with fiber
cable.
Figure 2-3 Remote Connections with Fiber Cable

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Headquarters
1000BASE-LXSMF
(5kilometers)
RemoteSwitch
10/100Mbps Segments
1000BASE-LHSMF
(70kilometers)
ServerFarm
RemoteSwitch