Juniper MX2020 Hardware Manual page 564

Figure 240: Attaching a Cable to an MPC
12. Arrange the cable in the cable manager to prevent it from dislodging or developing stress points. Secure
the cable so that it is not supporting its own weight as it hangs to the floor. Place excess cable out of
the way in a neatly coiled loop. Placing fasteners on the loop helps to maintain its shape.
CAUTION:
allow fastened loops of cable to dangle, which stresses the cable at the fastening
point.
CAUTION:
An arc smaller than a few inches in diameter can damage the cable and cause
problems that are difficult to diagnose.
13. Use one of the following methods to bring the MPC online:
Press and hold the corresponding MPC LC online button on the craft interface until the green OK
LED next to the button lights steadily, in about 5 seconds.
Issue the following CLI command:
user@host>request chassis fpc slot slot-number online
For more information about the command, see the
Reference.
Do not let fiber-optic cable hang free from the connector. Do not
Avoid bending fiber-optic cable beyond its minimum bend radius.
Junos OS System Basics and Services Command
546