Network Router User Manual

■ Verify that the power source has the proper current rating and that each power
supply is connected to a separate power source.
■ Verify that the cable or cord connecting the power supply to the external power
source is securely in place and that there is no moisture accumulating near the
router.
■ Verify that the cable or cord from the power source to the router is not damaged.
If the insulation is cracked or broken, replace the cable or cord immediately.
■ Verify that the power cables or cord do not touch or obstruct access to other
router components, and that they do not drape where people could trip on them.
■ Verify that the air flow in and out of cooling system components is not obstructed.
Maintaining the Routing Engine
The Routing Engine installs into the front of the chassis, as shown in Figure 1. To
maintain the Routing Engines, issue the CLI show chassis routing-engine command
regularly to check the status of the Routing Engine:
user@host> show chassis routing-engine
Routing Engine status:
Temperature 26 degrees C / 78 degrees F
DRAM 256 MB
Memory utilization 27 percent
CPU utilization:
User 0 percent
Background 0 percent
Kernel 4 percent
Interrupt 0 percent
Idle 96 percent
Model RE-5.0
Serial ID 1000392782
Start time 2003-06-11 11:39:32 PDT
Uptime 1 hour, 41 minutes, 51 seconds
Load averages: 1 minute 5 minute 15 minute
0.00 0.03 0.05
For further description of the output from the command, see the JUNOS System Basics
and Services Command Reference.
Maintaining the Routing Engine ■ 77
Chapter 11: Maintaining Hardware Components