14
You can use either the 100BASE-FX port or the SFP module slot, but not both at the same time. By
default, the 100BASE-FX port is active if an SFP module is not installed in the switch at startup. If you
install an SFP module after the switch has powered on, you must reload the switch to enable the
SFP module.
Follow these steps:
Caution Removing and installing an SFP module can shorten its useful life. Do not remove and
insert SFP modules more often than is absolutely necessary.
After you connect to the switch port, the port LED turns amber while the switch establishes a link.
This process takes about 30 seconds, and then the LED turns green when the switch and the target
device have an established link. 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 the
“In Case of Difficulty” section on page 15 for information about online assistance.
Step1 Grasp the module on the sides, and insert
it into the switch slot until you feel the
connector snap into place.
Step2 Insert an appropriate cable into the module
port. Insert the other cable end into the
other device.
91
100Base-FX SFP
Catalyst 2940
SERIES
SFP module
91
100Base-FX SFP
Catalyst 2940
SERIES