Internet dies due to P2P, my end, not routers

[TheBlackOut]

I'm having a problem and it's becoming more and more coming for some reason. I run uTorrent and I always have it open so I can seed. I seed a lot of torrents so I am connected to a lot of peers.

It sometimes depends, but normally about 20 minutes after starting up uTorrent, my internet connectivity dies. At first I thought it was my router, but I noticed my mom never complained that her internet died. So one time when my internet died again, I went onto her computer and looked, Google popped up fine. Yahoo did too. So did any other site, her end was fine. So now I knew it was my computer and that's where I am confused.. why? What can I do to stop this?

When my internet dies, I'll remain connected to the router. I do ipconfig and it shows my IP and everything. I do ipconfig /release then ipconfig /renew, get my IP back from the router and the computer still doesn't want to connect to the Internet. My IM programs won't log in, webpages won't display. I reboot, everything's fine.

I don't know what is causing it and how I could fix it. I am running Windows 7 RC 64-bit. Any help would be appreciated. And if you need any more info, I'll be happy to provide it.

 

[Elias824]

What type of connection do you have, do you have any ports forwarded? Are you using utorrent while your trying to browse the web? what kind of computer and network card do you have? What kind of speeds are you getting on utorrent while this is happening? How about a ping test?

 

[geokilla]

I get a similar problem with my Linksys WRT54GSv7 running DD-WRT. We all get disconnected out of Windows Live Messenger but everything else is fine.

Anyways, some of the suggestions I've seen are reduce the maximum connections, limit your upload speeds, upgrade your firmware, do a hard reboot. I myself have done all of that but nothing changes.

 

[Emulex]

http://deepxw.blogspot.com/200...n-tcp-connections.html

 

[TheBlackOut]

Originally posted by: Emulex
http://deepxw.blogspot.com/200...n-tcp-connections.html

I will come back if the problem persists and give more info but for now, this is working.

 

[ImDonly1]

Emulex's suggestion is right.

Also a few other things to try if that does not work out:
1. Some programs (NOD32 antivirus) will cause the same issue that you are reporting. You have to go in the options and disable it from checking utorrent. There are also other programs on the utorrent website that have problems. Link http://www.utorrent.com/faq/incompatible-software
2. WRT54g (some versions and certain firmwares) I believe has issues with p2p. A firmware update can fix the issues. Link http://www.utorrent.com/faq/incompatible-software#faq7
3. You can limit the max number of connections from 8 to 6 or 4 or whatever in the advanced utorrent options (of course the solution Emulex posted does not work.).

 

[TheBlackOut]

I ran uTorrent over night and it's still fine. I've rebooted and been on the reboot for over two hours, still fine. I think the suggestion Emulex definitely fixed it. I'm just curious now though, why doesn't Microsoft just include that setting so people (like me) don't have to go and enable it ourselves?

 

[ImDonly1]

It is there to stop the spread of virus/mal-ware infections or something. It stops the computer from having too many connections open at once and this slows down the spread fo a virus. So they keep it low and would rather you not change it yourself. I believe Vista Service Pack 2, Server 2008, and maybe (not sure) Windows 7 all have the limit removed though. It is off by default with those, but can be enabled through the registry I think.

 

[geokilla]

Wait, so by enabling the half-open TCP connection limit, I'm actually making it easier for virus and mal-ware to spread through my Internet connection?

 

[ImDonly1]

Yes... If your computer is infected with a virus that attacks other computers lets say. Then the mal-ware virus tries spreading and connecting to other computers. The higher the half-open TCP connections limit, the more connections it can make at a time and the faster it spreads. I wouldn't worry about it too much. Seems MS is feeling confident if they removed the connections limit in Vista SP2 and Windows 7.

 

[TheBlackOut]

Well I don't think they removed it from Windows 7 (unless they made that decision after the RC release, which is possible) since I had to enable it for my internet to work Thanks for the help and info guys.

 

[ImDonly1]

FYI, for anyone else that runs into this. They didn't remove it. But they now added a registry entry you can edit to change the limit. The registry entry is only available in Vista SP2 and Win 7. Before you had to edit the tcp.sys or whatever with a program.

 

[TheBlackOut]

I am back again due to the problem persisting once again.

Originally posted by: Elias824
What type of connection do you have, do you have any ports forwarded? Are you using utorrent while your trying to browse the web? what kind of computer and network card do you have? What kind of speeds are you getting on utorrent while this is happening? How about a ping test?

Verizon FiOS, 25/15Mb. I have my uTorrent ports forwarded. Yes, I'm using uTorrent while browsing the web. I have an onboard NIC but I just bought a new NIC to see if it was the NIC (no change). When the problem occurs, my speeds will normally dip down to around 10-20kBps then maybe go back to the max. I'll do a ping test next time it occurs.

Originally posted by: ImDonly1
Also a few other things to try if that does not work out:
1. Some programs (NOD32 antivirus) will cause the same issue that you are reporting. You have to go in the options and disable it from checking utorrent. There are also other programs on the utorrent website that have problems. Link http://www.utorrent.com/faq/incompatible-software
2. WRT54g (some versions and certain firmwares) I believe has issues with p2p. A firmware update can fix the issues. Link http://www.utorrent.com/faq/incompatible-software#faq7
3. You can limit the max number of connections from 8 to 6 or 4 or whatever in the advanced utorrent options (of course the solution Emulex posted does not work.).

1. Checked and disabled Avast and Windows firewall and waited. Still dipped, disconnected.
2. It isn't a router problem. Definitely on my end.
3. I tried that and at first it looked like it helped... then it started again.

 

[Modelworks]

The best way to resolve problems like this is by using the minimum hardware required then slowly add things back till you find the culprit. You need to connect directly to the modem, not the router, make sure it still continues to happen. Even if someone else using the router at the same time and doesn't have issues it can still be the router.

win7 and TCP:
I have never hit the limit for TCP connections in win7 and have edited nothing. I have had 70 connections running simultaneously and no issues and nothing in event viewer.