Hi yesterday, my rb532 + cm9 running one year without any problem, started to load cpu at 100%. Then it freezed. I dissabled cm9 and it run normally. Then after enabling cm9 again big cpu load. Then I tried to connect there another wirelles ap to ethernet port and load again on 100%. Then I connected to eth1 port of rb532 my pc, then to eth2 server pc with ethernet cable, pings from mikrotik to server were about 4ms and more. From pc pings to server were 1ms and less(like is normal/. I dont know what happened and what is wrong, now I cant check it because I dont have other devices can you help?

Problem was in one client, when i allowed him to connect the processor load at 100% and mikrotik wasnt able to do nothing. That client has best signal on me. I dont understand what could cause it, I wasnt at him, he is still disabled. Maybe some attacking on my network?

If you are sure about customer - check that client traffic - maybe it some ICMP flood?

I allowed him for a while but I wasnt able to run torch. Also i set a rule in firewall to log all traffic related to MAC of that client, but it wrote nothing.