So, we had a weird issue last night. We have an RB750 at a customer
location which suddenly stopped responding to
HTTP/HTTPS/SSH/telnet/FTP/Winbox/API. All traffic continued to pass from
the inside to the outside. We asked the customer to reboot the box in
the morning, and everything returned to working as expected. Shortly
before we lost connection, we did see the router's CPU start to increase
but only from about 2% to 5%. There doesn't seem to be anything else I
can see that caused issues. On-box logging after the reboot didn't show
anything (since I didn't have disk turned on) and my syslog logging had
a minor misconfiguration (since fixed). I've turned both on, in case we
see this again, but I thought I'd see if anyone had any ideas. It's not
doing a lot, besides DHCP/NAT/DNS and PCC load-balancing for HTTP/HTTPS.
Currently running RouterOS 4.10. The box is also being monitored by
RANCID for configuration changes, at a 10-minute interval.
So, anyone have any guesses? Have I blundered mightily somewhere, and I
just don't know it?
Jacob
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