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Catalyst 2984G, 2948G-GE-TX, and 2980G Switch Hardware Installation Guide
78-6286-05
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.
Patch Cord Configuration Example
Figure 4-5 shows a typical configuration using patch cords.
Figure 4-5 Patch Cord Configuration
Patch Cord Installation
Plug the end of the patch cord labeled “To equipment” into the GBIC (see
Figure 4-6). Plug the end labeled “To cable plant” into the patch panel. The patch
cord is 9.84 feet (3 meters) long and has duplex SC-type male connectors at each
end.
1000BASE-LX/LH
port
Patch
panel
Link span greater than 984 ft
(300 m)
1000BASE-LX/LH
port
Rx
Tx
Patch
panel
Patch
cord
Building
cable plant
Tx
Rx
Patch
cord
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