Connecting to an sfp module – Cisco 2940 User Manual
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Catalyst 2940 Switch Hardware Installation Guide
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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
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
and 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 Connecting to an SFP Module Port
Step 3
Insert the other cable end in a fiber-optic receptacle on a target device.
Step 4
Observe the port status LED.
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