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Installation and Configuration Note for the Catalyst 4500 Series Supervisor Engine V
78-15590-02
GBIC Handling Guidelines and Installation
Caution Because of interoperability issues, Cisco does not support GBICs purchased from third-party vendors.
Cisco 1000BASE-LX/LH interfaces fully comply with the IEEE 802.3z 1000BASE-LX standard.
However, their higher optical quality allows them to reach 10 km over SMF cable instead of the 5 km
specified in the standard.
If an LX/LH GBIC designed for operation on an SMF cable is directly coupled to an MMF cable, an
effect known as Differential Mode Delay (DMD) might occur. See the Catalyst 4000 Family Module
Installation Guide for more information.
This section describes the following topics:
• Installing a GBIC, page 19
• Removing a GBIC, page 20
• GBIC Maintenance Guidelines, page 21
Installing a GBIC
A supervisor engine can be shipped with or without GBICs installed.
Caution When removing or inserting a GBIC, always wear an ESD wrist strap connected to the ESD wrist strap
connector.
Caution Unnecessary removal or insertion of a GBIC can lead to premature failure of the GBIC. A GBIC has a
lifetime of 100 to 500 removals and insertions.
Note This product has been evaluated to and complies with acceptable-safety-emission limits for Class 1
lasers. However, you should still take general precautions when working with lasers.
Warning
Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into
beams or view directly with optical instruments.
Statement 1051
To install a GBIC, follow this procedure:
Step 1 Remove the GBIC from its protective packaging.
Step 2 Verify that the GBIC is the correct type for your network by checking the GBIC part number. The part
number indicates whether it is 1000BASE-SX, 1000BASE-LX/LH, or 1000BASE-ZX.
Step 3 Grasp the sides of the GBIC with your thumb and forefinger; insert the GBIC into the desired slot on the
front of the module (see Figure 7).
Note GBICs are keyed to prevent incorrect insertion into a slot.
