Symptom

An ISR4K router may reload unexpectedly with the last reload reason as "LocalSoft" without writing core file or crashinfo to bootflash. Router uptime is 13 days, 1 hours, 12 minutes Uptime for this control processor is 13 days, 1 hours, 12 minutes System returned to ROM by reload at XX:XX:XX UTC XXX XXX XX XXXX System restarted at XX:XX:XX UTC XXX XXX XX XXXX System image file is "bootflash:isr4300-universalk9.XX.XX.XX.X.XXX-X.XX-std.SPA.bin" Last reload reason: LocalSoft ------------------ show platform ------------------ Chassis type: ISR4321/K9 Slot Type State Insert time (ago) --------- ------------------- --------------------- ----------------- 0 ISR4321/K9 ok 3d19h 0/0 ISR4321-2x1GE ok 3d19h R0 ISR4321/K9 ok, active 3d19h F0 ISR4321/K9 ok, active 3d19h P0 PWR-4320-AC ok 3d19h P2 ACS-4320-FANASSY ok 3d19h There are no syslog or other messages produced on the device console.

Conditions

ISR4K router running IOS-XE software.

Workaround

There is no known workaround. This issue is still under investigation.

Further Problem Description