Home LAN DNS errors

MSaxp

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Sep 9, 2014
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4,510
Since i moved into my new house, I keep having DNS issues. You never know when and i still dont know how it goes away. It only affects my PC and not any of the wireless devices.

The setup is as follows, modem/router is downstairs in the main socket and my PC is upstairs, connected via a TP-Link TL-PA2030KIT 200Mbps Powerline Adapter.

When it happens its a real pain. I try restarting everything (PC, router, powerline adapater, but sometimes its just too stubborn). And i have no clue what causes it as it doesnt seem like it happens because of something specific. It might be working fine and then you see the little yellow exclamation mark on the connection icon. Is there a chance that it is just the powerline adapters being bad and i should just get Netgear ones? Or is it problematic in general?

(PC is using Windows 7)

Thank you for any help

Mike
 
Solution
Yes if it does not ping it means you have a loss of connection. A DNS error means it could not talk to the DNS server on the internet and resolve the URLs. This could be that the DNS server responds but the data in its database is not valid or the DNS server does not respond at all. There are lots of things that can cause a DNS server to not respond from the server being broken to any failure in the path to the server. It is way to generic of a error to be of much use.

If you can ping you gateway then try to ping 8.8.8.8 or 4.2.2.2 , these are public DNS servers. If you have a real DNS issue you could use one of these instead.
It likely is not really a dns error but a complete loss of connectivity. You should ping your gateway via ip address to really test.

Powerline device like wireless can be a pain in some houses. They are actually a form of radio transmission that is carried over wires rather than the air. Most time they work pretty good. You want to be sure you have no surge protectors or extension cords. You need to plug these devices directly into the wall. There are many devices that interfere with these so you may need to try a different outlet in the room and see if you get lucky. The really bad news is the new building code requires the new arc fault breakers in new houses. A lot of these completely block the powerline devices.

Hard to say if newer ones will make a difference it really depends why the current ones do not work. The brand does not make as much difference as the technology inside. The ones you have are the older ones. The next step up is called av-500 and then av2 some claim 500 and other claim 600. None of course get even close. The newer technology tends to work a little better but it still does not work in some houses no matter which you try.
 

MSaxp

Reputable
Sep 9, 2014
18
0
4,510
Thanks for that. Could be a complete loss of connectivity, I will test as soon as go home.

To be honest, I never have any speed issues. It either works fine or not at all. And both powerline adapters are connected straight to the wall, both on double sockets but i dont know if that can be a problem.

So, if i understand this correctly, if I have no ping to the router, does that imply the issue is not a DNS issue but a loss of connection?
 
Yes if it does not ping it means you have a loss of connection. A DNS error means it could not talk to the DNS server on the internet and resolve the URLs. This could be that the DNS server responds but the data in its database is not valid or the DNS server does not respond at all. There are lots of things that can cause a DNS server to not respond from the server being broken to any failure in the path to the server. It is way to generic of a error to be of much use.

If you can ping you gateway then try to ping 8.8.8.8 or 4.2.2.2 , these are public DNS servers. If you have a real DNS issue you could use one of these instead.
 
Solution