Randomly dropping WAN connection on WiFi router

March 23, 2012 at 14:50:48
Specs: Windows 7
Hi!

setup:
* ADSL modem connected to internet
* WiFi router (Netgear WPN824v2) connected to ADSL modem
* CPU, iPhone and iPad connected to router, CPU wired connection.

Everything has worked like a charm up until a couple of days ago. Now the link between the router WAN port and the modem randomly drops. Stays dropped for 1-3 secs and then connect again. When its really bad this happens with 5-10 secs intervall. This made it impossible to use the network from any of the devices.

If I disconnect the CPU from the router and connect it direcly to the modem and change the IP settings to match the modem network the CPU connects without errors to the internet, iPad and iPhone connected to the router keeps having problems.

Restarting the router does not change anything and it seems to be more frequent errors during heavy load hours, in the morning I have almost no problems at all, in the evenings I cant almost use the wireless devices (CPU works fine as its now connected directly to the modem not through the router).

I havent changed a setting in the last year, it just came right out of the blue.

I have hard reset both the modem and the router and reconfigured them (that I dont want to do again as I have some virtual servers, port forwards, port triggers and so on :P).

As it came right out of the blue without me changing anything on any device and as it seems to be more frequent during heavy load hours I'm suspecting that the ISP is involved, but how can they be (it works fine with devices connected straight to the modem)?

Kind regards
Anders


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#1
March 23, 2012 at 15:08:19
Highly doubtful the ISP is involved in your issue. The common link in your problem is one of two things. The router itself or the cable connecting it to the modem.

If you use the same cable to direct connect your COMPUTER ( A CPU is a big chip on the motherboard) when testing then the router is the culprit.

You can tear your hair out rebooting it & resetting it as you've already done. You can update it's firmware but in the end replacement might be the only sure way to resolve the issue.

Goin' Fishin' (Some day)


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#2
March 23, 2012 at 15:28:45
Hi!

Thanks for your reply!

Ok, I have really thought about getting a new router as mine is quite old and does support only b and g. To make sure its router related I will try to borrow one from work and see if I can get rid of the problem.

I have tried with different cables.

Intresting that I have always called computers CPU, as I know that is the processor and as I work in the IT business with computer support. :) Has to be due to the fact that English is not my native language and that I got that habbit a long time ago. Got to stop doing that. ;)

Regards
Leyan


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#3
March 27, 2012 at 14:23:31
A new router did it, so you where quite right. :)

Thanks again.


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Related Solutions

#4
March 28, 2012 at 13:14:20
Oh nooo!

Seems it was just a happy day for my network, problem is back with new router. :(

So if its my gear, that would leave the modem (I can rule out my iPhone and iPad as problem makers can't I?). As my computer runs with no problems what so ever through the modem it has to be something on the "inside" of the modem, but if it is, WHY does the problem occur under heavy load hours and not in the morning for example?

Please help me shead som light over this, I'm lost and dont know what to do....

Regards
Leyan


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#5
March 28, 2012 at 13:46:19
in the evenings I cant almost use the wireless devices (CPU works fine as its now connected directly to the modem not through the router).

To me this says router issues. When I'm thinking wireless issues with regard to routers I always recommend you do the following in order:

1) ensure router has the most up-to-date firmware available. If it doesn't, download and install the latest and test
2) firmware upgrade doesn't fix the issue, reset router to factory defaults and reconfigure
3) if all the above doesn't fix it, it's likely your router is broken and needs to be replaced.

Considering you tried another router I would contact my ISP and have them double check their equipment. They should be able to remote into the modem and run some diags. It's possible the modem is bad. However, a bad modem or ISP issues would affect both wired as well as wireless connections. In your case it's the the wireless that's having issues so I suspect your router, and the one you tried, may be the issue. To confirm, call your ISP. If their stuff checks out, try a completely different router (ie: not the one from work you've already tried unsuccessfully).

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#6
March 28, 2012 at 14:07:49
The new router was in the end not something I borrowed from work, but a brand new one. I now actually have tried with 2 new routers, same problem with both.

To clarify:
Modem has only wired connections, computer and router.
If I move my computer from the modem and wire it to the router I get same problem as with my wireless devices.

/Leyan


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#7
March 28, 2012 at 19:59:27
"in the evenings I cant almost use the wireless devices (CPU works fine as its now connected directly to the modem not through the router)."

ok, most likely RF issues, perhaps noisy AC line issues.
In the evening, people are cooking, coming home from work and logging on to their computers, using cell phones to check email, using wireless phones to chat, etc.

Look for a common denominator. Wireless house phones can use the same frequencies as routers. Microwave ovens can put out a lot of RF noise. So can power tools.


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#8
March 28, 2012 at 21:55:56
Ok, Then it has to be something that I do. We live in the country with our closest neighbour at least 300 ft away. We have not bought or installed any new "hardware" for the house the last couple of months and I'm not running my microwave all evening either. :)

So if its equpment in my hous disturbing the network it has to be due to some mulfuntioning hardware as the problem came right out of the blue.

To test this, can I try changing the radiobands to see if the problem eases or gets worse?

I think its more likely the modem, wich I will try to replace tonight.

/Leyan


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#9
March 29, 2012 at 07:13:18
I hate to say it but it's not likely to be the modem since wired connections work, but wireless doesn't. If it was the modem, wired connections would be experiencing the same problem at the same time as wireless clients.

The only thing left is as THX 1138 said, interference.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#10
March 29, 2012 at 08:05:59
But if i connect the wired computer to the router I get the same error, so its not only wireless.

It works when I run computer straight through modem, but not if I put a router in between, wired connection between computer and router or not....


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#11
March 29, 2012 at 11:05:54
Then I would look to line current issues such as dirty AC power or low voltage. You even asked the question "why does this happen during heavy load hours"? Do you have a voltmeter? If so, stick the leads in the socket and monitor the voltage during off peak and during on peak hours. How low does it drop during heavy load hours?

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#12
March 29, 2012 at 11:48:50
I'll check that as my next thing if the problem comes back. I'm currently running peak hours with a brand new modem without problems, but I had nights without problem before so I will have to run for a few days without problem before I cheer again. :p

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#13
April 1, 2012 at 14:50:36
Been running without a single drop, that I've been aware of at least, for the last 4 days. That inlcuding a friday and a saturday wich are really heavy load days. I'm pretty optimistic even if I'm not totally convinced yet, but it sure seems like replacing the modem did the trick.

/Leyan


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#14
April 1, 2012 at 20:13:35
Glad to hear you got it sorted out. Thanks for posting back.

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#15
April 1, 2012 at 23:27:59
Thank you all who involved yourselves in this thread!

I really appreciate you taking the time to try to help me and I sure got some good advice. I won't hesitate to use this forum in the future if I stumble upon new problems. :)

/Leyan


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