Cisco Catalyst 6500 Series Installation Guide

2-9
Catalyst 6500 Series Switch Module Installation Guide
78-15725-02
Chapter 2 Preparing for Installation
Determining Cable Distances
Patch Cord
When using the long wavelength/long haul (LX/LH) GBIC with 62.5-micron
diameter MMF, you must install a mode-conditioning patch cord (Cisco
product number CAB-GELX-625 or equivalent) between the GBIC and the MMF
cable on both the transmit and receive ends of the link. The patch cord is required
for link distances greater than 984 feet (300 meters).
Note We do not recommend using the LX/LH GBIC and MMF without a patch cord for
very short link distances (10 to 100 meters). The result could be an elevated bit
error rate (BER).
Note The patch cord is required to comply with IEEE standards. IEEE found that link
distances could not be met with certain types of fiber-optic cable due to a problem
in the center of some fiber-optic cable cores. The solution is to launch light from
the laser at a precise offset from the center by using the patch cord. At the output
of the patch cord, the LX/LH GBIC complies with the IEEE 802.3z standard for
1000BASE-LX. For a detailed description of this problem, see the “Differential
Mode Delay” section on page 2-11.
Table 2-9 10-Gigabit Ethernet Optical Power Specifications
Model
Average Transmitter
Output Power
Average Receiver Input
Power
Link Power
Budget
WS-X6501-10GEX4 –3.5 dBm (minimum)
+2 dBm (maximum)
–16 dBm (minimum)
0dBm (maximum)
12.5 dB
WS-G6488 OIM
1
1. Optical Interface Module (OIM). The WS-G6488 OIM and WS-G6483 OIM is installed in the
WS-X6502-10GE 10-Gigabit Ethernet Base Module.
–8.2 dBm (minimum)
+0.5 dBm (maximum)
–14.4 dBm (minimum)
+0.5 dBm (maximum)
6.2 dB
WS-G6483 OIM
1
–4.7 dBm (minimum)
+4 dBm (maximum)
–15.8 dBm (minimum)
–1 dBm (maximum)
11.1 dB

Cisco Catalyst 6500 Series Specifications

General

Brand	Cisco
Model	Catalyst 6500 Series
Category	Switch
Language	English