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[MX/PTX] Next Generation routing-engine alarm 'Major Host X ECC single bit parity error'



Article ID: KB37050 KB Last Updated: 01 Jun 2021Version: 1.0

The following alarm is seen on a router with Next Generation Routing-Engine:

user@router> show chassis alarms 
1 alarms currently active 
Alarm time Class Description 
2021-05-20 12:56:00 CEST Major Host 0 ECC single bit parity error 

This is due to a single bit parity error within RE ECC memory. When 10 errors are reported, Junos will report this alarm. There is no service impact.


After 24 hours without new SBE errors, this alarm is cleared automatically.

Try clearing this alarm manually with the following command:

clear chassis routing-engine memory sbe-count


Change the threshold where the alarm will be reported with this config:

set chassis routing-engine ecc-sbe threshold X

If this problem keeps repeating after clearing the alarm, please contact your JTAC Representative.

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