Asus RT-N56U freezing when downloading at 50 Mbps and more via WiFi.

[Milos_SD]

Hi.

I got the speed upgrade from my ISP few weeks ago from 30/1.8 Mbps to 60/4 Mbps (7.8 MB/s download). And now when I download something from torrent (lets say some linux distro) at full speed via wireless (2.4Ghz, I didn't try 5Ghz), I can see that cpu utilization is at around 50% and when I telnet and use "top", utilization is on "sirq". After few minutes of max download speed, router freezes and I need to turn it off and on to make it work. I can't even enter webUI where I get a message that configuration of router has been changed and I need to try again or something like that. And I can't telnet too, it says no route to host.
I have the latest AsusWRT firmware. If it can help, I had the one firmware that was removed from asus website (the one with new login). But I downgraded to "3.0.0.4.378_4850", because I guess it was removed for a reason.

I tried to transfer files from PC that is connected on router LAN port, to a laptop with wifi, and there is no freezing. Speeds are between 12-21 MB/s, and router cpu utilization is at around 20-30%.
And when I'm downloading something on the PC that is connected to LAN port, everything works and router cpu utilization is at 20%. Also, when I limit the speed on the laptop to 4-4.5 MB/s, it works ok, and cpu utilization is at 20-30%.
So I guess that router has some problem when its cpu utilization is at constant 50% or more for more then a few minutes.

Can you please help me how to solve this? Can that be a firmware issue, or is it a hardware issue (overheating maybe)?

Thanks.

 

[Slamb]

it looks like asus has stopped development for most of N routers you should try padavans fw, im thinking about it too https://bitbucket.org/padavan/rt-n56u

 

[L&LD]

Did you try the stable version instead of the Beta you're running?

Version 3.0.0.4.376.3879

 

[Milos_SD]

Did you try the stable version instead of the Beta you're running?

Version 3.0.0.4.376.3879

Yes I did. That is the first one I tried when I noticed this problems with the firmware that was removed from there web site, but the problem stayed. Can it be that the router is full of dust, and it is just overheating? I can notice that it is much hotter when there is 50% cpu usage. I'll see if there is a simple way to open it, and clean it.

it looks like asus has stopped development for most of N routers you should try padavans fw, im thinking about it too https://bitbucket.org/padavan/rt-n56u

I am thiking about it too. But I don't believe it will help. Does it have all the features like the Asuswrt?

 

[L&LD]

When using a new firmware, do you do a full reset to factory defaults after flashing it?

 

[Milos_SD]

When using a new firmware, do you do a full reset to factory defaults after flashing it?

When problems started, and I changed few firmwares in one day, I did. But before that, I never did a full reset to factory defaults after flashing.

 

[L&LD]

If you're not doing a full reset to factory defaults, then you are chasing your tail, I'm afraid.

http://www.snbforums.com/threads/no...l-and-manual-configuration.27115/#post-205573

 

[Slamb]

I am thiking about it too. But I don't believe it will help. Does it have all the features like the Asuswrt?

i switched to padavans fw right now and having no problem it looks feature rich, there are some nvram / internal storage reset options, more firewall options and many others, just give it a try
there are also different builds because of extremely small storage, differences are described here http://wiki.rt-n56u.googlecode.com/...c50a745ea126d94a8de63c760/FirmwareBuilds.wiki