Cisco Catalyst 2960 Software Configuration Manual page 73

Chapter 1 Overview
Figure 1-4
Long-Distance, High-Bandwidth Transport Configuration
To use CWDM SFPs, the switch must be running the LAN Base image.
Note
Figure 1-5
Catalyst 2960, 2960-S or 2960-C 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.
OL-26520-01
Collapsed Backbone Configuration
Internet
Cisco 2600 or
3700 routers
IP IP
Cisco IP
Workstations
phones
running
Cisco SoftPhone
software
shows a configuration for sending 8 Gigabits of data over a single fiber-optic cable. The
Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE
Network Configuration Examples
Aironet wireless
access points
Gigabit
servers
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