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MX10003 Routing and Control Board (RCB) may reset with no core-dump.

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Article ID: TSB17760 TECHNICAL_BULLETINS Last Updated: 10 Apr 2020Version: 1.0
Alert Type:
PSN - Product Support Notification
Product Affected:
JNP10003-RE1 750-067071 REV36 and below
Alert Description:
    A certain power rail on RCB is unused, however enabled and monitored. In some cases, this power rail falls down below the under-voltage threshold, then the power control logic immediately shuts down the RCB, and RCB can come up after the power rail recovers.
 
    When this condition happens, RCB in a system resets with the following message in Junos syslog:
 
eventd[4680]: SYSTEM_ABNORMAL_SHUTDOWN: System abnormally shut down

   Given an individual characteristic difference on an unused power rail, it's possible that RCB operates normally without experiencing this reset issue.​
 
Solution:
    Juniper Networks has developed a field solution through a new FPGA firmware that properly disables the unused power rail.
Implementation:
    ​Please contact JTAC so that the RCB FPGA firmware can be upgraded.
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