The ports at the provider are burning. Can the switch ports burn out because of the router?

Question

network hardware

In a day or two, ports at the provider burn out. The first time normally arrived, changed. Then they swear, they say that my router burns ports. But how is this possible? Well, OK. I changed the power supply, took it from the TV set-top box, they are the same for me. Anyway, one dick in a couple of days the port was covered again. I tell them, maybe there is a pickup on the cable somewhere, well, the type has frayed, maybe somewhere ... No, they say, we checked the type. But of course I doubt it, we have vestibules here, they are a hundred pounds too lazy to go knocking to open. I live on the second, they have a box hanging on the tenth. They say there would be a tip, my router would also burn, but it is alive. I won't put my mind to it. Everything worked, worked, and for no reason, this garbage began. Cable normal utp two pairs. The weather in the city is excellent, it has not rained for a long time.

Answer 1

Hmm, it was the case that one phase burned out, a bunch of equipment came kirdyk. Let them shake the UK about proper grounding. Tell the provider that Ethernet is a standard and will not physically be able to burn their port, let them fuck electricians

Answer 2

This is quite real and there are not isolated cases.
Only a technician from your ISP will be able to give a final answer and help in the decision, after a complete re-pulling of the cable from the switch to your router

Answer 3

In Ethernet equipment, galvanic isolation is used as a de facto standard - the cable is connected to the board of your router through a transformer, and if the transformer is working, then roughly speaking, the current of the router's power supply is not able to reach the provider's equipment, let alone burn it. By the way, just such a transformer burns out in the final equipment when the port burns out - it takes a hit on itself, saves the circuits after itself, if a direct current or mains voltage comes to the port. Problems with the router that turn it into a burning port can occur if a metal object inside the case closes some kind of power circuit of the router to the WAN output. This is easy to check by opening and visual inspection from all sides. Or if the circuitry of the router is frighteningly unsuccessful, then this particular development may have been broken. tr-p -- input shorted to output. But then most likely there would be no connection with the provider after the first burnt one. It is checked with a multimeter, datasheet search and a little experience.
As the comrades said above, wire and electrics are a much more likely cause of the provider's troubles. If the port does not burn out instantly, then you should pay the attention of the angry technicians of the provider to this, that they will come to plug the cable - perhaps the port does burn out when the neighbor's doorbell rings? For complacency while there is no Internet, you can poke the WAN into the LAN (or into the computer) and proudly show the fitters that "the day is turned on, and look, everything works the same!".