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[JUNOS] Unexpected reboot with 'System abnormally shut down' and 'power cycle/failure' messages

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Article ID: KB31157 KB Last Updated: 07 Oct 2020Version: 3.0
Summary:

An unexpected reboot of my SRX with "System abnormally shut down" and "power cycle/failure" messages occured. There may be a problem in the Power System or hardware issue.

Symptoms:

An SRX reboots without any core file.

From "messages" file, the following message is logged:
 
Aug 12 22:08:45 SRX100 eventd[1033]: SYSTEM_ABNORMAL_SHUTDOWN: System abnormally shut down

From "show chassis routing-engine no-forwarding" the following message is shown:
 
<snip>
Last reboot reason 0x1:power cycle/failure
<snip>

What could be the cause of this reboot ?
 
Cause:

The message "power cycle/failure" indicates that this is not software issue. There may be a problem in the Power System or hardware fault.

Solution:

Verify that the power system; power supply, power adaptor, is in good condition. Change it as needed.

Should the reboot recurs frequently, it may be a device hardware issue. Contact JTAC for an RMA application.

Modification History:
2020-10-06: Minor, non-technical edits.
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