Cisco Systems 2940 manual Connecting to an SFP Module Port

Chapter 2 Installation

Connecting to an SFP Module

Step 4 Observe the port status LED.

The LED turns green when the switch and the target device have an established link.

The LED turns amber while Spanning Tree Protocol (STP) discovers the network topology and searches for loops. This process takes about 30 seconds, and then the port LED turns green.

If the LED is off, the target device might not be turned on, there might be a cable problem, or there might be a problem with the adapter installed in the target device. See Chapter 3, “Troubleshooting,” for solutions to cabling problems.

Step 5 Reconfigure and restart the target device if necessary.

Step 6 Repeat Steps 1 through 5 to connect each port.

Connecting to an SFP Module

This section describes how to connect to an SFP module. For instructions about how to install or remove an SFP module, see the Cisco Small Form-Factor Pluggable Modules Installation Notes (order number DOC-7815160=) and to the documentation that came with your SFP module.

Caution Do not remove the rubber plugs from the ports on fiber-optic SFP modules or the rubber caps from the the fiber-optic cable until you are ready to connect the cable. The plugs and caps protect the SFP module ports and cables from contamination and ambient light.

Before connecting to an SFP module, be sure that you understand the port and cabling stipulations in Table 1-2and in the “SFP Module Slot” section on page 1-4. See Appendix B, “Connectors and Cables,” for information about the LC on the SFP modules for fiber-optic connections.

Note See the release notes for the latest information about SFP modules supported by the switch.

Follow these steps to connect a fiber-optic cable to an SFP module:

Step 1 Remove the rubber plugs from the module port and fiber-optic cable, and store them for future use. Step 2 Insert one end of the fiber-optic cable into the SFP module port, as shown in Figure 2-11.

Figure 2-11 Connecting to an SFP Module Port

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Step 3 Insert the other cable end in a fiber-optic receptacle on a target device.

Step 4 Observe the port status LED.

Catalyst 2940 Switch Hardware Installation Guide

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