Initialization sequence, Troubleshooting power failures, Understanding status leds to troubleshoot – Juniper Networks E-Series User Manual
Page 124: Initialization sequence -2
CHAPTER 10
Troubleshooting
10-2
Initialization Sequence
Each E-series line module is initialized independently. As a result, the
CLI on the SRP module may become available before the line modules
have completed initialization. Commands relating to a line module may
fail if the module has not completed initialization. The
show version
command can be used to display line module status. Do not enter
commands for a line module until its state is “online.”
Troubleshooting Power Failures
The system’s distributed power system is designed to consume low levels
of power and dissipate low levels of heat. See
for specifications of power consumption and heat
dissipation. If you suspect a power problem, refer to
.
Understanding Status LEDs to Troubleshoot
Module LEDs can show you the immediate status of a module and alert
you to a problem with the module or one of its ports. It is helpful to
familiarize yourself with LED activity so that you can easily detect and
correct a module-related problem with minimal or no system downtime.
Table 10-1 Causes of power failures
Symptom
Possible Problems
Actions
System does not
power up.
•
System is not receiving
power.
•
A module’s power supply
has malfunctioned.
•
Power source cannot handle
system load.
Note: The following actions apply to all of the possible
problems.
1 Verify that all power connections are correct.
2 Verify that the power supply is delivering the correct
voltage, current, and wattage to the system. See to
Chapter 11, System Specifications
3 If the system still does not operate, contact Juniper
Networks Customer Service.
System shuts down.
•
Temperature too high
•
Loss of power
Note: The following actions apply to all of the possible
problems.
1 Verify that power connections are properly attached.
2 Verify that system is receiving power.
3 Check whether or not the LEDs are lit.
4 Run diagnostics on SRP and line modules.
5 If system will not reset, contact Juniper Networks
Customer Service.