Cisco Catalyst 3560-X Series, Software Configuration Manual

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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
Chapter 1 Overview
Network Configuration Examples
Figure 1-11 Catalyst 3750-X Switches in a MAN Configuration
Long-Distance, High-Bandwidth Transport Configuration
Figure 1-12 shows a configuration for sending 8 Gigabits of data over a single fiber-optic cable. The
Catalyst 3750-X or 3560-X switches have coarse wavelength-division multiplexing (CWDM) fiber-optic
SFP modules installed. Depending on the CWDM SFP module, data is sent at wavelengths from 1470 to
1610 nm. The higher the wavelength, the farther the transmission can travel. A common wavelength used
for long-distance transmissions is 1550 nm.
The CWDM SFP modules connect to CWDM optical add/drop multiplexer (OADM) modules over
distances of up to 393,701 feet (74.5 miles or 120 km). The CWDM OADM modules combine (or
multiplex ) the different CWDM wavelengths, allowing them to travel simultaneously on the same
fiber-optic cable. The CWDM OADM modules on the receiving end separate (or demultiplex ) the
different wavelengths.
For more information about the CWDM SFP modules and CWDM OADM modules, see the Cisco
CWDM GBIC and CWDM SFP Installation Note .
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Service
Provider
POP
Mini-POP
Gigabit MAN
Residential
location
StackWise Plus
switch stack
Standalone
switches
Catalyst 6500
switches
Cisco 12000
Gigabit switch routers
Si Si
Si
Residential
gateway (hub)
Set-top box
TV
PC
Set-top box
TV