I have the DIR-655, Rev. B running 2.07NA firmware, and have a strange problem with my wired clients. I have my primary computer/desktop PC connected via wired connection. I also have several wireless clients (laptop, iPad, iPhones, etc.). All have been performing normally. However, in December I connected a wired weather internet bridge to another ethernet port on the DIR-655.
It functions as it is supposed to, and all other connected devices do as well. But here's the problem - whenever I use the desktop PC (the only other wired connection) to do anything on the internet (mostly just web browsing ... I don't stream media from the internet on it, I don't do torrents....nothing out of the ordinary, and nothing really of high bandwidth), the wired weather bridge cannot communicate with its associated website. This continues as long as I'm using the desktop PC. When I stop using the desktop, the weather bridge resumes normally.
I have researched the weather bridge, and it is simply doing POST transactions (or so I'm told) to the website listening to it. It doesn't wait for acknowledgements or anything...just keeps POSTing updates.
I tried reserving an IP for the weather bridge and the desktop, enabling QoS, and prioritizing the weather bridge (100 vs. desktop at 125), but it didn't help. I've tried moving the weather bridge into the DMZ. Again, it doesn't help.
I'm totally baffled how just using the desktop to browse the internet could completely block the traffic from the weather bridge.
Any thoughts or suggestions would be appreciated. On the weather bridge support site, they suggested that I insure I'm not connected in gigabit speeds from my computer to the router, because in the past that has been known to cause issues on clients not running that speed, but I don't think my desktop is connected in that fashion. According to the settings, it can do 10 or 100, full or half. I have it set to AUTO.