We've recently purchased 2 of the RB1100AH2's and deployed them in a VRRP setup. Within this first week one has started randomly rebooting. We've failed over to making the second MKT a primary for the time being as it doesn't appear to be having the issue.

In the logs we found the following.

system error critical System rebooted because of kernel failure
Jan/01/1970 17:00:03 system error critical router was rebooted without proper shutdown (cause 1)

I'm pretty new at troubleshooting these devices so I'm looking for some advice where to start. Any help would be appreciated.

While digging around I found there was a newer firmware version for this, so I upgraded the device to 5.19. Are there any other log files that I can dig through to determine what caused the kernel to panic and reboot? Any diagnostics I can set up to catch some information if/when this happens again? Is this an indication of a misconfiguration in the software, or failing hardware?

I have same problem with random reboots, im on 5.18, I have about 50 vlans on the board and it passes quite a bit of traffic with mpls enabled and ospf. I've just had a reboot now.

here is my log, notice the "current-firmware" goes missing, Ill upgrade afterhours to 5.19 to see if it helps. Did you get yours stable yet

routerboard: yes
model: 1100AH
serial-number: 319F0136ED3C
current-firmware:
upgrade-firmware: 2.39

S

after a crash current-firmware can become blank due to crash, if you see that, definitely create supout.rif file and send it to support. Prior to that, make sure you are running latest version of RouterOS and bootloader.

Sorry the router is to crucial to sit and wait for downtime

I've downgraded the cpu speed to 800mhz and disabled connection tracking as its a LSR only

so far uptime is good

S