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Cisco 3750 - Catalyst EMI Switch Manuais de instalação
Preparing for Installation

Installation Guidelines

Table 3-1
Cabling Stipulations for SFP Modules
62.5/125 micron
SFP
Multimode
1
Module
850 nm
Fiber
2
SX
275 m
at
200 Mhz-km
LX
—
1. nm = nanometer
2. m = meter
Catalyst 3750 Switch Hardware Installation Guide
3-6
When determining where to place the switch, be sure to observe these
requirements:
For 10/100 and 10/100/1000 ports, cable lengths from the switch to connected
•
devices are up to 328 feet (100 meters).
Table 3-1
lists the cable stipulations for 1000BASE-SX and 1000BASE-LX
•
SFP connections. The only restriction is that each port must match the
wave-length specifications on the other end of the cable, and the cable must
not exceed the stipulated cable length for reliable communications.
50/125 micron
62.5/125 micron
Multimode
Multimode
850 nm Fiber
1310 nm Fiber
550 m at
—
500 Mhz-km
—
550 m at
500 Mhz-km
Operating environment is within the ranges listed in
•
Specifications."
•
Clearance to front and rear panels is such that
Front-panel indicators can be easily read.
–
Access to ports is sufficient for unrestricted cabling.
–
Make sure that there is access to the rear of the rack if you are planning
to stack the switches. If you do not have access to the rear panel, make
sure you cable the switches before you rack mount them.
Rear-panel power connector is within reach of an AC power receptacle.
–
Chapter 3
50/125 micron
9/125 micron
Multimode
Single-mode
1310 nm Fiber
1310 nm Fiber
—
—
550 m at
10 km
400 Mhz-km
Switch Installation
8 micron
Single-mode
Dispersion
Shifted Fiber
—
—
Appendix A, "Technical
78-15136-01