Cisco CATALYST 2960 User Manual

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Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE
OL-26520-01
Chapter 1 Overview
Network Configuration Examples
Figure 1-4 Collapsed Backbone Configuration
Long-Distance, High-Bandwidth Transport Configuration
Note To use CWDM SFPs, the switch must be running the LAN Base image.
Figure 1-5 shows a configuration for sending 8 Gigabits of data over a single fiber-optic cable. The
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.
Gigabit
servers
101388
Cisco 2600 or
3700 routers
Internet
Cisco IP
phones
Workstations
running
Cisco SoftPhone
software
Aironet wireless
access points
IP IP

Cisco CATALYST 2960 Specifications

General

Manageable	Yes
Stacking	No
Model	Catalyst 2960 Series Switches
Power over Ethernet (PoE)	Available on some models (IEEE 802.3af)
VLANs	255 active VLANs
Features	QoS
Operating Temperature	32 to 113°F (0 to 45°C)
Relative Humidity	10% to 85% non-condensing
Power Consumption	Varies by model (30W to 400W)