Hi guys.
My network have a strange thing, it randomly lost internet connection. After some check I found out when clients lost internet my mikrotik router still have internet connection but all ports in bridge have high traffic. The problem solved when I disconnect port 4 out but I don’t know exactly what cause the issue.
Can someone help?
Thanks.

Some device, connected to ether4 (either directly or via other switches), seems to be flooding network with close to 100Mbps of traffic … MT then forwards it to other bridge ports. Without analysing the traffic to determine exact source of traffic and what type of traffic it is it is impossible to help with the problem.
Our client connect to a switch before connect to MT
Could you give me some advice on this situation and how can I prevent it and troubleshoot it.
Thanks
Right-click on that interface, select Torch, then sort the output on traffic amount (click on colum header until amount is sorted down).
Identify which IP address is causing the traffic.
Close Torch window and go to DHCP server leases list to find the hostname for the system and the MAC address.
Use these to identify the system, and throw it out the window.
Thank you guy.
I will try it.
After checking I have found out client connect cable to switch lead to loop.
Thank.