[JohnWill]

Odd...

I have run both WPA and WPA2 with the DIR-615 and it never exhibited any issues at all. I confess to not having tried WEP...

[Jason08]

I guess it's possible I'm in a small percentile of people having this problem with the DIR-615.

[JohnWill]

I'd have to do a reset to factory defaults and try again... When you reset with the reset button, did you allow sufficient time for a true factory reset to occur?

[Jason08]

At first, I did an automatic reset (from inside the configuration pages), then a hard reset. When I did the hard reset, I pushed the paper clip in until about 2 seconds after on my hard-wired PC I briefly saw the "LAC disconnected" message, which I figured meant the connection had been reset. However, with the automatic reset, it should have been long enough, since I didn't really have to do anything.

[JohnWill]

Well, I'd do the hard reset again, two seconds won't do a factory reset to defaults. If you check the manual, they specify 10 seconds for the DIR-615.

[Jason08]

Ok, I'll try it again.

[Jason08]

So yesterday I tried the factory default reset again, holding the paper clip in the reset button for 12 seconds. Then I enabled WPA again, and same problem. But then I noticed on the status page as it said WPA-Personal enabled, the channel was 1. I thought, "maybe my network adapters are too far away for them to pick up a channel of only 1". So I changed the channel to 6, and also changed the wireless mode from mixed to 802.11G, since both adapters are running that. Then after saving settings, both computers could see the network!
So the problem ended up being the channel was too low or the mixed mode, and now the problem is solved!
Thanks to all who helped.

[JohnWill]

If you had the 40mhz channel width selected, I think you're stuck with channel 6 as I recall.

[Jason08]

You mean 20/40 MHZ? If I select a mixed mode, I only have 20MHZ and Auto 20/40 MHZ as the options.

[JohnWill]

The auto 20/40 is the one I'm talking about.

[Jason08]

Over the last 7-10 days, I have been having transmission problems with the router. Sometimes my computer will randomly lose connectivity to the router, but still have valid IP settings. The other computer did one time, but mine has done so multiple times over the last 7 days, or within a couple days after getting WPA to work. In the router statistics page, it says on the wireless there are no packets being dropped, but the errors I've seen over the last few days often are around 10,000-11,000. The Help says it's transmission failures, but yet on my computer randomly loses connectivity the speed will often be at least 36 mpbs, sometimes even 54, and signal strength usually Very Good or Excellent (4 and 5 bars respectively.)

Today when it happened, I went downstairs to where the router is and a couple LAN-connected PCs, and in the router there, it displayed my computer having a rate of 36 and over 60% signal strength (sometimes there are differences with the speed and signal strength from what the router sees and what displays on the computer.) I moved the router up about 3 feet onto a desk ledge, and the signal strength (displayed in the router) went up to 87%. When I moved the router back down to the floor, it went to 75%. But since my computer is usually either at 4 or 5 bars, even when losing connectivity, I don't think the signal strength is the problem. When I lose connectivity, I can't get a ping response from the router, but yet the icon displays I am connected, and when I try to ping google, it says it could not even find it.

Back to the router Help page, not only does it say that the errors are transmission failures, but that a noisy radio-frequency environment can cause high errors. Well, today when I randomly loss connectivity, I don't believe any cell phones were being used in my house at the time, and certainly not anything in the pathway from the router to my adapter or even the other computer/adapter that uses frequency.
At first, I thought it was something on my computer, because it has happened at least 5 times in the last 8 days on my computer but not more than twice I think on the other computer, but I think it is of note that sometimes when both computers are fine the speed displayed in the router is not high, on the other wireless computer sometimes down to 18. In the router, the transmission is set at best. I'm not sure if a reset would fix this transmission problem, but over the last 6 weeks trying to fix the initial WEP/WPA problem, I reset the router to factory default settings 3 times, so I don't think it needs another one.

[JohnWill]

Uhh... the return key sprinkled around there would help the readability a lot! An amorphous blob of text like that is difficult to follow!

[Jason08]

Sorry about that. I have now broken it up into multiple paragraphs.

[JohnWill]

This screams out wireless interference to me. Try Xirrus Wi-Fi Inspector and see what other wireless networks are close to you when you're having the problem.

[Jason08]

John, I think you may be right as I've been using Xirrus for the past couple days now. However, from the data I collected today after my wireless went down again, I'm wondering if I'll just have to live with it with several neighbors around.

Earlier today when my wireless went down, this is the info I got from Xirrus.
1. I had my router set to channel 11, and the signal strength was 78%.
2. A network(I'm giving it Ad) in the area was running on channel 11, with a signal strength of 74.
3. Another network, with my name I'm calling it (not the real SSID) "Od" was running channel 6 with a strength of 38%.
4. A 4th network (LL) was running a channel of 6 with 44% strength.
5. A 5th network (NN) was running channel 1 with a strength of 18%.

When my network was up, but maybe not at the best speed, this is what I noted.

1. After noticing the channel 11 conflict, I changed my network to channel 1, and the signal strength was 80%.
2. NN was running channel 1 with 50% strength.
3. Od was also still at 6 with 36% strength.
Ad and LL were not in range.

It just went down again as I started typing this post, and this is what I noted.

1. My network running on channel 1, with a strength of 60%.
2. NN running channel 1, with a strength of 52%.
3. Od running 6, strength 42%.
4. LL running 6, strength 22%.

So after coming up with these stats about what the networks around in my neiborhood/area are using, the only thing I was thinking that may work would be setting the channel to auto. I thought I saw visually on Xirrus, although I may have written it down wrong on paper, that one of the networks automatically changed channels when I changed mine earlier.

EDIT: NN just changed to channel 11, and there is no other network in range using channel 1, the channel my network is currently set on, but just briefly my speed dropped down to 18mbps.