Installation Guidelines - Cisco Catalyst 3750 Hardware Installation Manual

Chapter 3 Switch Installation

Installation Guidelines

Table 3-1 Fiber-Optic SFP Module Port Cabling Specifications
SFP Module
1000BASE-SX
1000BASE-LX/LH
1000BASE-ZX
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When deciding where to place the switch, be sure to observe these requirements:
• For copper Ethernet ports, including 10/100 ports and 1000BASE-T SFP
module ports, cable lengths from the switch to connected devices can be up
to 328 feet (100 meters).
Table 3-1 lists the cable specifications for 1000BASE-SX, 1000BASE-LX,
•
1000BASE-ZX, and CWDM fiber-optic SFP module connections. Each port
must match the wave-length specifications on the other end of the cable, and
for reliable communications, the cable must not exceed the stipulated cable
length.
Wavelength
(nanometers) Fiber Type
850 MMF
1
1300 MMF
SMF
1550 SMF
Modal
Core Size Bandwidth
(micron) (MHz/km)
62.5 160
62.5 200
50 400
50 500
62.5 500
50 400
50 500
9/10 —
9/10 —
Catalyst 3750 Switch Hardware Installation Guide
Preparing for Installation
Cable Distance
722 feet (220 m)
902 feet (275 m)
1640 feet (500 m)
1804 feet (550 m)
1804 feet (550 m)
1804 feet (550 m)
1804 feet (550 m)
32,810 feet (10 km)
43.4 to 62 miles (70
to 100 km)
3-7