Chapter 9
Troubleshooting a Services Router
This chapter contains the following topics:
■ Troubleshooting Hardware Components on page 157
■ Resetting the Configuration File When the Router Is Inaccessible on page 160
■ Recovering the Root Password on page 161
■ Recovering Primary Boot Devices on page 164
■ Contacting the Juniper Networks Technical Assistance Center on page 167
Troubleshooting Hardware Components
This section contains the following topics:
■ Monitoring and Correcting Chassis Alarm Conditions on page 157
■ Troubleshooting Power Management on page 159
Monitoring and Correcting Chassis Alarm Conditions
You can monitor alarms to troubleshoot hardware problems on a Services Router.
Alarms alert you to conditions on the router chassis, or in the system software that
might prevent the router from operating normally. You can monitor active alarms
from the J-Web interface or the CLI.
Services Router alarms warn you about conditions that can prevent the router from
operating normally. Chassis and system alarm conditions are preset. When the
Routing Engine detects an alarm condition, it lights the ALARM LED on the front
panel. When the condition is corrected, the light turns off.
To view a more detailed description of the alarm cause, issue the show chassis alarms
CLI command:
user@host> show chassis alarms
Table 47 on page 158 describes alarms that can occur for a chassis component such
as the Routing Engine or a Physical Interface Module (PIM).
Troubleshooting Hardware Components ■ 157
