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Remote Connections with Fiber Cable
Fiber optic technology allows for longer cabling than any other media type.
A 10GBASE-SR (MMF) link can connect to a site up to 300 meters away, a
10GBASE-LR (SMF) link can connect to a remote site up to 10 km away
and a 10GBASE-ER(SMF) link can connect to a site up to 40 km away.
This allows a 10 Gigabit Ethernet Switch to serve as a collapsed backbone,
providing direct connectivity for a widespread LAN.
A 10GBASE-SR XFP transceiver can be used for a high-speed connection
between floors in the same building, and a 10GBASE-LR XFP can be used
for high-bandwidth core connections between buildings in a campus
setting or to connect to a remote site.
The figure below illustrates this switch connecting multiple segments with
fiber cable.
Server Farm
Remote Switch
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10GBASE-LR SMF
(10 kilometers)
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PWR
47/Down
48/Up
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Diag
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RPU
48
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10 Gbps Segments
...
Figure 2-2 Remote Connections with Fiber Cable
A
Headquarters
Remote Switch
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E
PPLICATION
10GBASE-LR SMF
(10 kilometers)
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PWR
47/Down
48/Up
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Diag
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RPU
4 8
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XAMPLES
2-3
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