CAUTION: Do not leave a fiber-optic transceiver uncovered except when inserting
or removing cable. The safety cap keeps the port clean and prevents accidental
exposure to laser light.
6. Arrange the cable in the cable management system to prevent the cable from dislodging or developing
stress points. Secure the cable so that it does not support its own weight as it hangs to the floor. Place
excess cable out of the way in a neatly coiled loop in the cable management system. Placing fasteners
on the loop helps to maintain its shape.
CAUTION: Do not let fiber-optic cable hang free from the connector. Do not allow
fastened loops of cable to dangle, which stresses the cable at the fastening point.
CAUTION: Avoid bending fiber-optic cable beyond its minimum bend radius. An arc
smaller than a few inches in diameter can damage the cable and cause problems that
are difficult to diagnose.
7. Verify that the status LEDs on the router indicate that the QSFP28 transciever is functioning correctly.
You can also verify interface port functioning by issuing the show chassis fpc pic-status command.
Maintaining MX204 Cooling System Components
IN THIS SECTION
Maintaining the MX204 Fan Module | 122
Replacing an MX204 Fan Module | 124
Maintaining the MX204 Fan Module
Purpose
122