Hello Alex
Below commands should provide details of last reboot and reason:
1. show system uptime
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Current time: 2014-04-18 09:12:26 UTC
System booted: 2014-04-16 10:51:17 UTC (1d 22:21 ago) <<<<<<<<
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2. show chassis routing-engine
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Routing Engine status:
Slot 0:
Current state Master
Election priority Master (default)
DRAM 1023 MB
Memory utilization 32 percent
CPU utilization:
User 0 percent
Background 0 percent
Kernel 6 percent
Interrupt 1 percent
Idle 94 percent
Model RE-PPC-1200-A
Start time 2014-04-16 10:51:17 UTC
Uptime 1 day, 22 hours, 21 minutes, 58 seconds <<<<<<<<
Last reboot reason Router rebooted after a normal shutdown. <<<<<<<<
Load averages: 1 minute 5 minute 15 minute
0.02 0.02 0.04
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Regards,
Raveen