I’ve been running a RB4011 for a while now and I’m suffering from spontaneous reboots. I’ve had 3 in 4 weeks. The log always shows “Topics: system, error, critical, Message: router was rebooted without proper shutdown”.
The router itself isn’t doing anything spectacular. Just some standard stuff like Wifi + guest Wifi, couple of VLANs, simple firewall rules and a bit of queueing. Board identifies itself as RB4011iGS+5HacQ2HnD, running version 6.46.4 (stable). Hardly any visible CPU load and lots of free memory. Haven’t upgraded the Routerboard firmware yet (current firmware is 6.45.1, upgrade firmware 6.46.4).
I have enabled remote logging and I noticed that around the moment of the “crash”, the time of the router seems to have changed abnormally. Just before the crash, last message sent had timestamp “04:01:32”, right after the “crash”/reboot, the next message had timestamp “03:52:55”.
Could NTP be a factor? I’m not using (S)NTP but the Cloud feature.
Same here with a RB4011iGS+RM.
Tried with different RouterOS versions all the way to the latest beta.
Changed power supplies and everything is running of a UPS anyway.
Still reboots every few days.
Best advice is to open a support case.
Send my RB4001 back for RMA warranty repair and waiting for the
return or exchange.
Mikrotik support first wanted me to try the latest RouterOS beta
and then told me to open a RMA warranty repair with
my distributor. They did not say if this is software or
hardware related. Looking at the other RB4011 cases
on this forum http://forum.mikrotik.com/t/rb4011-and-rb1100-ahx4-bricks-randomly/130638/1
I think iit is a hardware issue after all.
It might be hardware issue, software issue or a combination of both… no one knows, Mikrotik isn’t telling us any details either. Sadly this is “business as usual” here. Some products are clear “lemons”… never ending RB4011 issues, flapping ports on RB3011, … only “fix” is to get rid of the device while you still can by RMAing it with your supplier.
I have exactly the same issue.
Within say 7 days my RB4011 suddenly reboot, out of the blue.
After rebooting the time is always different from what is was.
I try as workaround and I don’t know why I do it, let say a shot in the dark, but I have disable the 5GHz Wifi to see if the reboots disappears.
Ok. I did not touch 5Ghz but completely disabled time-management. So no (S)NTP and no “IP->Cloud->Update Time”. 6 days < uptime < 7 days now. Looking at the date/time, they are still correct.
I’m the OP; I just wanted to say that after disabling all “remote” Mikrotik time management (‘/IP/Cloud/Update Time’ disabled and ‘/System/SNTP’ disabled), I haven’t had a spontaneous reboot anymore.
Even Daylight Saving Time was applied by the device itself last weekend, also not leading to any problems. Clock seems to be off by approximately 2 seconds now. Not a problem for me but YMMV.
@Mikrotik, are you here? I this just coincidence or is the root cause?
we have +160 rb4011 devices having crash issues, opened cases, they told us to RMA due to hardware issue.
distributor cant see problem and rejects RMA…
even new latest serial numbers crashing, up until v6.47beta54 where we suddenly have longer uptimes then 7 days…
I have disabled “SNTP Client” and “Time update” in Cloud settings, but reboots still occurs. One time it happened exactly when I was connecting my phone to WiFi (maybe coincidence?).
I’m also suffering the unexpected reboots! Sometimes after a week, sometimes after a day. It happens even with absolutely no load. It’s so frustrating. After the reboot there is no supoort.inf file. I’m running 6.46.5 and the routerboard is updated. I’ve tried the stock power supply, one with 48v and another with 57v. No luck.
