Network Router User Manual

Chapter 11
Maintaining Hardware Components
This chapter describes how to maintain hardware components installed in the router.
For information about returning a part to Juniper Networks for repair or replacement,
see “Contacting Customer Support and Returning Hardware” on page 189.
■ Routine Maintenance Procedures on page 73
■ Maintaining the CFEB on page 73
■ Maintaining the Fan Tray on page 74
■ Maintaining PICs and PIC Cables on page 74
■ Maintaining the Power Supplies on page 76
■ Maintaining the Routing Engine on page 77
Routine Maintenance Procedures
For optimum router performance, perform the following preventive maintenance
procedures regularly:
■ Inspect the installation site for potential problems caused by moisture, loose
wires or cables, and excessive dust. Make sure that airflow around the router is
unobstructed.
■ Check the LEDs on the HCM and on hardware components. See “High-Availability
Chassis Manager (HCM)” on page 17.
Maintaining the CFEB
The Compact Forwarding Engine Board (CFEB) installs into the rear of the chassis,
as shown in Figure 2. To maintain the CFEB, perform the following procedures
regularly:
■ Check the system logging messages on the management console. The CFEB
notifies the Routing Engine of any errors it detects during normal operation.
■
Issue the CLI show chassis cfeb command to check the status of the CFEB.
user@host> show chassis cfeb
Routine Maintenance Procedures ■ 73