Cisco Catalyst 6500 Series Installation Guide

Chapter 2 Preparing for Installation
Determining Cable Distances
2-6
Catalyst 6500 Series Switch Module Installation Guide
78-15725-02
Table 2-6 Gigabit Ethernet Maximum Transmission Distances
GBIC Type Wavelength
(nm)
Copper/Fiber
Type
Core Size
1
(micron)
1. The numbers given for multimode fiber-optic cable refer to the core diameter. For single-mode fiber-optic cable, 8.3 microns
refers to the core diameter. The 9-micron and 10-micron values refer to the mode-field diameter (MFD), which is the diameter
of the light-carrying portion of the fiber. This area consists of the fiber core plus a small portion of the surrounding cladding.
The MFD is a function of the core diameter, the wavelength of the laser, and the refractive index difference between the core
and the cladding.
Modal Bandwidth
(MHz km)
Cable Distance
2
2. Distances are based on fiber loss.
WS-G5483
Copper
– Category 5,
5e, 6 UTP
– – 328 ft (100 m)
WS-G5484
Optical SX
3
3. Use with MMF only.
850 MMF 62.5
62.5
50.0
50.0
160
200
400
500
722 ft (220 m)
902 ft (275 m)
1640 ft (500 m)
1804 ft (550 m)
WS-G5486
Optical
LX/LH
1310 MMF
4
SMF
4. When using an LX/LH GBIC with 62.5-micron diameter MMF, you must install a mode-conditioning patch cord
(CAB-GELX-625 or equivalent) between the GBIC and the MMF cable on both the transmit and receive ends of the link. The
mode-conditioning patch cord is required for link distances less than 328 feet (100 m) or greater than 984 feet (300 m). The
mode-conditioning patch cord prevents overdriving the receiver for short lengths of MMF and reduces differential mode delay
for long lengths of MMF.
62.5
50.0
50.0
8.3/9/10
500
400
500
–
1804 ft (550 m)
1804 ft (550 m)
1804 ft (550 m)
6.2 mi (10 km)
WS-G5487
Optical ZX
1550 SMF
SMF
5
5. Dispersion-shifted single-mode fiber-optic cable.
8.3/9/10
8.3/9/10
–
–
43.5 mi (70 km)
6
62.1 mi (100 km)
6. The minimum link distance for ZX GBICs is 6.2 miles (10 km) with an 8-dB attenuator installed at each end of the link.
Without attenuators, the minimum link distance is 24.9 miles (40 km).

Cisco Catalyst 6500 Series Specifications

General

Brand	Cisco
Model	Catalyst 6500 Series
Category	Switch
Language	English