Installation guide

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Catalyst 2984G, 2948G-GE-TX, and 2980G Switch Hardware Installation Guide
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Chapter 4 Configuring the Gigabit Ethernet Ports
Installing, Removing, and Maintaining GBICs
the output of the patch cord, the LX/LH GBIC is compliant with the IEEE 802.3z
standard for 1000BASE-LX. For a detailed description of this problem, refer to
Appendix C, “Differential Mode Delay.”
Note Cisco Gigabit Ethernet products have been tested and evaluated to comply with
the standards listed in Appendix A, “Specifications.” Equivalent cables should
also meet these standards.