SMC Networks 8728L2 FICHE, Руководство по установке

Страница: 34 / 88

N
ETWORK
P
LANNING
2-4
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 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 and a 1000BASE-LX SFP transceiver
can be used for core connections between buildings in a campus setting. And
for long-haul connections, a 1000BASE-LH SFP transceiver can be used to
reach another site up to 70 kilometers away.
The figure below illustrates the switch connecting multiple segments with
fiber cable.
Figure 2-3 Remote Connections with Fiber Cable