Question

Frequent Disconnects

May 29, 2019 1:54PM PDT

Ever since upgrading to 200mbps internet, I've been losing connection for a few seconds, every few minutes. This happens on all computers connected via ethernet. I've tried everything I can think of, and that I've found on the net with no success. Does anyone have anything that I may have missed? Here's what I've tried:
* New wi-fi router
* New cabling
* New switch
* Changed ethernet adapter settings to disable Green and Wake on magic packet
* Changed adapter to 100mbps half duplex
* Reinstalled adapter
* Disabled DHCP at the router
* Changed DNS to google

I'm at my wits end. Short drops are fine for web browsing, but terrible for everything else.

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Answer
Sounds Like Time To Contact the ISP
May 29, 2019 1:59PM PDT

Sometimes it's a problem at the main office. Sometimes, it's a local relay somewhere. But they should be able to narrow things down a little.

Hope this helps.

Grif

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Answer
Tell me about this new and old cabling.
May 29, 2019 2:27PM PDT

Every once in a while I'll find hand made cables with the wrong wire pairs. If these are made and even if not, tell me the wire pair scheme used.

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Monoprice 5e
May 29, 2019 2:58PM PDT

Brand new Monoprice 5e pre-made cable.

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OK, it's a stetch but
May 29, 2019 3:04PM PDT

A new router can be buggy. And almost every one has arrived with outdated to buggy firmware. So be sure to research your router. Sometimes a router like the old 655 is not best with the latest but an older firmware. I can't do this research for you since I don't know what you have. But once you know, you can work that area.

The ISP gear is usually autoupdated but when this network wide drop happens we remove ALL our gear and test with one of our most stable PCs or phones,

Finally there are motherboards that you can't ignore the Intel firmware update (not to be confused with the BIOS.) Be sure the test machine has current Intel firmware for both the the ME and the Ethernet+WiFi areas. It does not matter about "it worked before." Just like our old "Vista Broadcast Flag" issue we had to work all the areas to cure that one.

The other area that comes up from time to time is power. I can't guess your network power source stability.

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Answer
for a test
May 29, 2019 2:37PM PDT

try connecting one computer directly to the modem and see if it drops?

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Ugh
May 29, 2019 3:02PM PDT

I did this before, and this is what led to me replacing my 3 week old switch. Bypassing the switch and going straight to the router worked flawlessly at that time.

Guess what? It works when I bypass the 2 day old one too...

I guess my switches are the problem, but that just seems to make no sense. Why would I have no issues at all prior to the upgrade, and then go through a bunch of switches?

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There's a small clue there.
May 29, 2019 3:10PM PDT

We did encounter a few really cheap switches that did that. We eventually found them, found that sometimes a full unplug of all connections and a power cycle would fix for a hour or so but in the end we had to get them out of the network.

Now if you have those Intel motherboard Ethernet systems, I repeat we must update firmware and the ME (firmware, code, drivers, whatever they hand out.)

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Thanks
May 29, 2019 3:24PM PDT

I appreciate all the help. It probably is the cheap switches.

Forgot to mention that I also swapped out the motherboard network cards for new as well.

I'm going wifi in the meantime, since that seems stable. One computer was always on wifi, since a cable run would have resulted in wires across a floor or over the ceiling. It never seemed to have an issue.

I'll try a new switch when my frustration level goes down a bit.

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Just back and another idea.
May 29, 2019 4:01PM PDT

I did encounter a network where the owner had run more than one Ethernet cable from the ISP gear to the switch. They thought 2 cables would be faster.

Is there any sketch of the wiring available?

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troubleshoot by
May 29, 2019 3:24PM PDT

how many ports are you using on the switch? plug in one device see if it disconnects, if it don't add another and see if it disconnects and so on.

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Answer
If it's happening with all
May 30, 2019 6:11AM PDT

devices I would contact your ISP.

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