Understand what's wrong with the network?

Question

Computer networks

From time to time, absolutely without patterns (at least I never found them), my Internet disappears.
The situation is this - on the roof of my house there is a provider switch, to which I and several other apartments are connected. Ping to this switch from my computer periodically disappears or is stable for 20-60 minutes or mixed - a few packets reach, a few do not.
The provider, in response to the complaint, sent the pingplotter logs to the switch, to the neighboring apartment and to me. In the first two logs, the ping is stable and good, but the one on me is intermittent and long.
The question is: where to dig? Could it be problems with the network card, or with the cable, or with the software?

Answer 1

As a person who has worked in the network for a long time, I can say that with a high probability the port on the switch can log. Ask to be poked into another.
In general, you can easily exclude a provider by plugging another computer or laptop into the cable. (only first change the MAC address of the 2nd computer to your own, otherwise they can ban (in any case, I would ban))
I can also say that if they poke you and this does not help, see if the signal is lost more often, if so, then probably somewhere the cable is frayed, and soon it will become very bad.
The network card usually either works or it doesn't. Half measures are rare and usually behave like in your case.

Answer 2

Could it be problems with the network card, or with the cable, or with the software?

Here you have answered your own question. Start consistently with the simplest. For example, change the OS for a while. Does not help - change the network card. If it doesn't help, change the cable. It's simple, "divide and conquer"

Answer 3

very similar to problems with the network card, dig in this direction!

Answer 4

maybe the cable is too long and the signal is weak.