Hi, my main router few times daily (3-5) disconnect whole network without any reason. I create script which read cpu utilization from router via routeros api and it shows that before blackout is cpu on 100%.
It happens on RB1000 and today I buy new RB1100 and switch to it. Problem continous. On new RB1100 I did clean manual setup (not recovery from file). It happens when traffic is from 10 - 50 Mbps.

There isnt any complicated setup,

• about 12 ips + routes (no ospf)
• firewall > filter rules = first droping acces to proxy from wan, second adding srcip from those accesses to addresslist, third add src to addreslist of spammers (more than 50packets/s).
• firewall > nat = 5 rules about adding src to addresslist seeking of clients using old dns ip, one rule to redirect old clients to webproxy, which redirect to external server with webpage, you are disconnected)
• webproxy = one rule - forward to webserver
• ip > dns = allow remote requests
• simple queue = 203 rules

No wireless, thats all.

Does anybode have some hint?

What RouterOS version?

We have disconnected one 10GHz link in our network and problem was solved.
But how to diagnose this problem, now it was luck that we find it, but next time?
Im realy missing some cpu monitoring utility shownig processes. Something like top/htop in gnu.

Ros latest 4.x.