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[dook123]

DLink 655
Fully Upgraded Firmware
Multiple Laptops have the same issue, each has a different O/S from OSX to xp, vista and win 7.

As soon as any laptop tries to download files, youtube, even web pages... There is nothing wrong with my wired connection. The thing is, each laptop gets disconnected then almost instantly reconnected. It is very annoying.

The only thing I have found to fix it is turning off my wireless security completely. This is unacceptable! I am a computer scientist and in the security field. Ive tried WEP with both key sizes, WPA-Personal is what I originally was using before I started changed settings.

The common message I see is some Deauth message in the Log.  You cannot blame this on the four laptops I have because they all work on other wireless connections.

[McNubbins]

Hello, I am having the same problem though it seems to be limited to just my ASUS G73JW laptop. It has an Atheros AR9285 Wi-Fi 802.11 n adapter that seems to have some kind of incompatibility with the DIR-655. My mother-in-law and a friend of mine were up for new years with the exact same laptop/WiFi adapter and they were dropping as well. I have a PS3, Wii, Dell Vostro 1500 laptop with 1390 wireless G and x2 PC’s with D-Link DWA-552 cards that are staying connected without issue. I’m using WPA2 + AES for security.

Wanted to poll to see what wireless cards users have that are seeing this issue to understand if it is limited to certain manufacturer models or not.

Here is a link to a good string that indicates a potential work-around that would allow you to keep security on. However, I haven’t tried it yet, but it seems to have worked for the poster.
http://forums.dlink.com/index.php?topic=21228.0

[-Jim-]

Folks,

I too am having this type of issue. It just cropped up after a year of great service. It was rock solid.

(Is the Router Dying so quickly after warranty expiration?)

If I leave WPA2 + AES Security off everything is fine. But once switched on, the wireless devices fall off, and the wired ones too!   

I've upgraded (?) to the most recent Firmware and still no Joy.

I had a 624 for ages, and upgraded to the 655 to get N speeds.

I'm at a loss on what to do but keep searching. Maybe it's already time to retire the 655?

Regards,

Jim

[davevt31]

Check for interference from neighbors

inSSIDer

[-Jim-]

Check for interference from neighbors

inSSIDer

I did look at what Channel the Houses nearby were on so I switched to Channel 9 and then 10 with no effect.

Here's what I see on the Router Page when it drops devices:

Please wait...
The gateway is currently measuring your network connection.
Accessing this web page might have an effect on the measurement.
This page will refresh shortly.

[davevt31]

Thats from the router rebooting and doing the QOS check.

[dook123]

Im pretty sure this has nothing to do with the channels. And if you know how the channels work they overlap so using anything in between would not be much of a change. 1, 6 and 11 are the best results with no overlap. But if you have neighbors on each you just have to go with whatever is your favorite number.

[marmoduke]

Dook,

Considering your analysis narrative is correct, I have two suggestions as to the cause/remedy.

1.  Electrical interference/voltage horrors/bad or noisy electrical power circuit to the router or faulty power supply.  Plug the router in on a different circuit as a diagnostic tool.  Use a circuit where no motors, refrigerators, printers, AC etc are connected.  Better yet, use a good UPS/surge protector for the router.

2.  Heat.  If your router is horizontal, install high rubber "legs" to the bottom to allow air flow completely around your router.  If vertical, make sure air (not hot from ceiling) is allowed to circulate freely.  I had a Netgear 624 once that I had to install a small fan and vent holes before it would function correctly.

[-Jim-]

Gents,

The install is fine. Lots of air circulation as it's a vertical mount 3 feet off the floor with no nearby sources of heat or electrical noise. The circuit it is fed from has only 3 PCs on it, and the whole house is surge protected at the Main Panel. As far as putting a UPS on it that's not going to happen here. The utility has a fantastic reliability record and I'm not a fan of adding extra hardware with little benefit.

(I'm an Electrician by trade and have 2 years of Electrical Technologist training as well so it's not an external install issue.)

I need to get this network reliable so I retired it for now until I get it figured out. 

[FurryNutz]

@ DOOK and Jim,
What kinda of wireless devices do you have connecting to the router?
Does this do this with one device connected or with them all connected at the same time?
Any cordless house phones in the area? These can effect wireless connections.

Have you tested Single mode G and Single mode N for this condition?
I recommend turning off ALL wireless devices. Fully OFF.
Do a factory reset of the router. Do not load any saved config files.
Bring up one device only and test out the wireless modes, single G and N. Then try Mixed G and N.
I would turn off any QoS and traffic shaping options.
Ensure Primary and 2ndary DNS IP addresses are filled in under Setup/Internet/Manual.
Enable DNS relay. Turn off Advanced DNS services.
Disable Short GI under Advanced Wireless settings.

The DE-authenitcation messages seen in the logs are due to the fact that the router has detected a loss of the connection due to interference or the connected device was turned off or when into sleep mode or left the WiFi routers area of broadcast. I see this all the time, specially with iPhones.