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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 70 describes alarms that can occur for a chassis component such as the Routing Engine or a Physical Interface Module (PIM).

Table 70: Chassis Alarm Conditions and Corrective Actions

Component	Alarm Conditions	Corrective Action	Alarm Severity
Alternative boot media	The Services Router boots from an alternative boot device.	Typically, the router boots from the internal compact flash. If you configured your router to boot from an alternative boot device, ignore this alarm condition. If you did not configure the router to boot from an alternative boot device, contact JTAC. (See Requesting Technical Support.)	Yellow (minor)
PIM	A PIM has failed. When a PIM fails, it attempts to reboot. If the Routing Engine detects that a PIM is rebooting too often, it shuts down the PIM.	Replace the failed PIM. (See Replacing a PIM.)	Red (major)
Routing Engine	An error occurred during the process of reading or writing compact flash.	Reformat the compact flash and install a bootable image. (See the J-series Services Router Administration Guide.) If this remedy fails, you must replace the failed Routing Engine. To contact JTAC, see Requesting Technical Support.	Yellow (minor)
	Routing Engine temperature is too warm.	Check the room temperature. (See Router Environmental Tolerances.) Check the air flow. (See General Site Guidelines.) Check the fans. (See J2320 and J2350 Cooling System and J4350 and J6350 Cooling System.) If you must replace a fan or the Routing Engine, contact JTAC. (See Requesting Technical Support.) Check the air filter and replace it if it appears clogged. (See Replacing Air Filters on J2350 Routers and Replacing Air Filters on J4350 and J6350 Routers).	Yellow (minor)
	Routing Engine fan has failed.	Replace the failed fan. To contact JTAC, see Requesting Technical Support.	Red (major)

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