Cisco Catalyst Express 520 Reference Guide

A-11
User Guide for the Catalyst Express 520 Switches
OL-12761-02
Appendix A Reference
Cabling Guidelines
Note When using shorter distances of single-mode fiber cable, you might need to insert
an inline optical attenuator in the link to avoid overloading the receiver.
Table A-2 Fiber-Optic SFP-Module Port Cabling Specifications
SFP Module
Wavelength
(nanometers) Fiber Type
Core Size
(micron)
Modal
Bandwidth
(MHz/km) Cable Distance
100BASE-BX-10D 1550 SMF G.652
2
— 32,810 ft (10 km)
100BASE-BX-10U 1310 SMF G.652
2
— 32,810 ft (10 km)
100BASE-FX-FE
100BASE-FX-GE
Min.: 1270
Typical: 1300
Max.: 1380
MMF 50/125
62.5/125
500 6,562 feet (2 km)
100BASE-LX 1310 SMF G.652
2
— 32,810 ft (10 km)
1000BASE-LX/LH 1300 MMF
1
SMF
1. A mode-conditioning patch cable is required. Using an ordinary patch cable with MMF, 1000BASE-LX/LH SFP modules,
and a short link distance can cause transceiver saturation, resulting in an elevated bit error rate (BER). When using the LX/LH
SFP module with 62.5-micron diameter MMF, you must also install a mode-conditioning patch cable between the SFP
module and the MMF cable on both the sending and receiving ends of the link. The mode-conditioning patch cable is required
for link distances greater than 984 feet (300 m).
62.5
50
50
9/10
500
400
500
—
1804 feet (550 m)
1804 feet (550 m)
1804 feet (550 m)
32,810 feet (10 km)
1000BASE-SX 850 MMF 62.5
62.5
50
50
160
200
400
500
722 feet (220 m)
902 feet (275 m)
1640 feet (500 m)
1804 feet (550 m)

Cisco Catalyst Express 520 Specifications

General

Brand	Cisco
Model	Catalyst Express 520
Category	Switch
Language	English