Chapter 3 Switch Installation
Preparing for Installation
3-6
Catalyst 3750 Switch Hardware Installation Guide
78-15136-01
Installation Guidelines
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.
• Operating environment is within the ranges listed in Appendix A, “Technical
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.
Table 3-1 Cabling Stipulations for SFP Modules
SFP
Module
62.5/125 micron
Multimode
850 nm
1
Fiber
1. nm = nanometer
50/125 micron
Multimode
850 nm Fiber
62.5/125 micron
Multimode
1310 nm Fiber
50/125 micron
Multimode
1310 nm Fiber
9/125 micron
Single-mode
1310 nm Fiber
8 micron
Single-mode
Dispersion
Shifted Fiber
SX 275 m
2
at
200 Mhz-km
2. m = meter
550 m at
500 Mhz-km
————
LX — — 550 m at
500 Mhz-km
550 m at
400 Mhz-km
10 km —
To Next Page
Loading...
