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Cisco Bug: CSCvr96849 - System power-off after removing CLI for ignition undervoltage threshold

Last Modified

Sep 24, 2020

Products (1)

  • Cisco 800 Series Routers

Known Affected Releases

15.9

Description (partial)

Symptom:
The undervoltage threshold is set to 31.1v if no ignition undervoltage threshold CLI in the configuration and ultimately results in system power-off.

The valid range for "Undervoltage threshold" should be 9V ~ 24V. 

Conditions:
IR829(config)#no ignition undervoltage threshold
[ignition_event - input power undervoltage is triggering a shutdown] 
Powering down cellular modem, please wait...
Powering down cellular modem, please wait...
%IGNITION-4-IGN_UNDER_VOLTAGE: The input voltage is at 12.2 V. The undervoltage threshold of 31.1 V has been tripped recently. Shutdown sequence will begin.
%CELLULAR-2-MODEM_DOWN: Cellular0 modem is now DOWN.
%IGNITION-5-IGN_RELOAD_SYS: The Ignition Power Management is preparing for shutdown
%SYS-5-RELOAD: Reload requested by IGNITION. Reload Reason: Ignition Power Management - low voltage.
%IR800_ENV-5-IR800_VDS_NOTIFIED_GOS_SHUTDOWN: Notified VDS for graceful shutdown.
Modems already powered down!
%IR800_ENV-5-IR800_VDS_GOS_ACK_SHUTDOWN: Received ack from VDS. Now it is shutting down.
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