Mikrotik interfaces are falling, what kind of misfortune?

Question

Mikrotik

I began to notice a very annoying problem in the network on Mikrotik. The essence is as follows:
I start downloading from a fat server file, the network is loaded at 98mb sec on the desktop. after a while I catch a drop in all ports on

Mikrotik in the log, Mikrotik itself works at that time, does not freeze:

lays down the entire network.
I don’t know how to live with this, for now I decide to limit the speed to 10 megabits on the interface with the north, but this is not a solution. Does anyone have options?

Answer 1

When expanding the network, a gigabit switch was installed, now the microt is only in the role of a gateway. Everything works stably.

Answer 2

What router model and firmware version?

Answer 3

Hello.
A similar situation.
I have a network on MikroTik equipment:
Main router: 2011UiAS-2HnD
A couple of MikroTik SW gigabit: RB260GSP and CSS106-5G-1s
A couple of WiFi points: RBcAPL-2nD
One router as a WiFi point: RB931-2nD
Firmware version on routers: 6.42rc52 Upgraded
WiFi network on CAPsMAN
Everything was fine, but at one point problems began when copying large files between the server and the home computer.
In the process of copying, all ports on the main router fall in some cases, if at that moment I am at the console and interrupt copying, then after a couple of minutes the network rises, and if I am not around, then the network goes into a complete knockout and in order to raise it, you have to overload the main router.
I tried changing the firmware now, so I switched to the test one until it helped.
I checked all the wires with a network tester, I did not reveal any problems.
I'm starting to think if my main router is dying, it's already several years old!
In addition to the problem with dropping ports, I found a very strange glitch when using CAPsMAN on the main router.
As soon as I activate WiFi as a CAPsMAN point on the main router, the interface starts to fall murmuring to the log about the MAC conflict, dealing with the conflict, I come to the conclusion that the conflict occurs on the main router between the WiFi card and the CAPsMAN WiFi virtual interface.
It is written in the mana that when the CAPsMAN mechanism is activated, the main WiFi interface, as it were, is turned off, and its functionality, together with its MAC, passes to the virtual WiFi CAPsMAN. But in my case, the main WiFi interface, as it were, does not turn off, and when CAPsMAN is activated, a conflict is immediately displayed in the log!
Perhaps they can help me with this problem.
I hope for your advice.