Bittorrent is slowing other PCs on my network - seeding only

[DavidCane]

Hi,

I've found an issue that's really confusing me. I have 3 PCs on a wireless lan, all connected to the net with a D-link G604T router. I use BitTorrent alot (BitTornado client) and have found that when one PC is using bittorrent the net connection on the other PCs slows to a crawl, even if the BT client has completed the download and is only seeding. As soon as the client is shut down on one PC the internet speed returns to normal on the other PCs. I must stress that this happens when the BT client is seeding a full file - ie NOT downloading anything.

I have the router set up for port forwarding (6881-6889 I think). Any idea why BT is strangling my network?

Cheers

DC

[nchan10111]

Bit torrent opens multiple connections to other peers by opening as many ports as possible in that range. it may not be downloading but as long as it talking to other bit torrent clients your router is busy keeping all the connections open. only fix is to get a large fat pipe such as fibre optics and a cisco router to handle all those connections. other then that buy two lines to yours ISP, not two IP's but physically two lines to the ISP's routers.

[MJCfromCT]

nchan10111 is right, even if you are not running BT on a certain machine, the fact that it is actively uploading data will slow down the connection speed for every computer that is connected to the internet through that same connection.

[coldcarbon]

I have 5 computers two networks but the router to the out side is a smc router with the correct port forwording. and when I run bit torrent on my computer it takes down both networks it ƒuc|<ing crazy. I have a big *** pipe 100/100mbit connection to my house with a OC/ds-3 backbone. the network is city wide fiber optic to all the switchs and cat5e to the homes. I can be downloading seeding doesn't matter if it's open it makes all computer on the networks unable to surf the web. I like the answers above about all the connection are taking over. My question is is there a way to limt how many stay alive like if i don't need them or not being used for them to time-out and close and not re-open untill I need them.

any suggestions? Thanks in advance.

[Direct1]

and when I run bit torrent on my computer it takes down both networks it ƒuc|<ing crazy. I have a big *** pipe 100/100mbit connection to my house. any suggestions? Thanks in advance.
I have one... Stop using profanity in these forums!

BTW, welcome to SysOpt!

[nchan10111]

Well, cold coldbon.... Do you have a regular router made for home use or a large corporate router made to handle a hundred connections at once. You see the problem is not with your connection, you do have a good fibre optics channel to handle all those connections but do you have the hardware to manage them. you could try other Bit torrent managers such as Azereus or bit storm to limit the amount of open ports at one time, though that will limit your speed alot.

I usely leave my bit torrent running while I am at work and shut it down when i come home due to the hogging of bandwidth.

[coldcarbon]

I am using Azereus i think I just need to probe the options a little bit more.

I am running a moded version of a SMC router the city changed it around a little. but I think I will try to get my hands on a corp router like a cisco. I think I can get on for like 75$ or so. but I didn't really want to spend the money. but I am going to start a server farm so I guess it would be a good idea.

[coldcarbon]

I have one... Stop using profanity in these forums!

BTW, welcome to SysOpt!


OK, I am sorry. I am just mad :(

[BipolarBill]

You have a nasty habit of being confronational and loose with profanity, ColdCarbon. You have had at least two posts edited for content so far - out of only 15. Since you are just starting out, we will cut you a bit of slack, but I'm not hopeful that you will last long unless you start using more imaginative ways to express yourself.

This is an official warning.

[Hola hoop]

Lol guys there is one reason why bit torrent slows down all the network traffic when seeding or downloading........its because you DIDNT read the FAQ of the torrent site and you didnt look into the app your using (azerus ABC Bit tordado)

lol

Direct Connect 411 - 413
Kazaa 1214
eDonkey 4662
Gnutella 6346 - 6347
BitTorrent 6881 - 6889 (bit torrent has many more but these are the main ones)

In order to use use the tracker you must configure your client to use any port range that does not contain those ports (a range within the region 49152 through 65535 is preferable). Some clients, like Azureus 2.0.7.0 or higher, use a single port for all torrents, while most others use one port per open torrent. The size of the range you choose should take this into account (typically less than 10 ports wide. There is no benefit whatsoever in choosing a wide range, and there are possible security implications).

These ports are used for connections between peers, not client to tracker. Therefore this change will not interfere with your ability to use other trackers. If your client does not allow custom ports to be used, you will have to switch to one that does.


Basically ISP's are fully aware of the "standard" ports use and bandwidth limit them. I change each week to be safe cause u really do notice the limits.

[nchan10111]

Hola hoop... FYI... we all know why bit torrent is slow, coldborn and Davidcane is not asking that, they're asking why is there network slowed down when bit torrent is only seeding. they never asked why his torrents download slow.

[Zenith63]

I'm having a similar problem. Once either PC on my home network is using BitTorrent, web browsing etc. becomes extremely slow. I'm trying to find a solution and came across this site. I'm no 2mb/128k ADSL.
I think coldcarbon has shown a "bigger pipe" isn't a solution. I've also noticed that even if BT is even only uploading/downloading 1 or 2kb/s web browsing is a pain.
Hundreds of connections? What hundreds of connections are these? Your client usually limits you to say 5-6 connections to other peers.
I was using a basic Zyxel 623 home/soho router but put in a Cisco 1700 the other day to try it out. Problem is exactly the same. I gave port 80 traffic priority through the Cisco but things were still lousy, though I'll have to check my configuration on it as I'm not sure it was 100% right...

[nchan10111]

Well after reading everything i could find on bit torrent and how it technically works. and watch traffic on a server. It seems that the torrent will spam ports for connection and drops it if it can't opent it. correct me if iam wrong, but it's kind of like a Denial of service attack going outwards from your computer. There's nothing you can do about it as it seems to be the nature of the torrent to Swarm for more peers.

I work as network anyalst and we supply internet to hotels. The hotel is able to support a 1000 guests using the internet at once. it only requires 1 person to use bit torrent or any p2p programs to bring the hotel to its knees. The persons IP shows 50 times with the same or slight diffrent ports. once its banned the hotel returns to normal.

[coldcarbon]

I support hotels to for merlot I see the same problem what hotels do you support?

I am going to see if I can't limit the program to so many connections using a 3 party software. I will let you all know if I find a program to fix this issue.

[nchan10111]

We support about 1500 hotels around the world.

We ban guests using the most obvious ports: 6438 and 6436

there isnt a good 3rd party program out there that will limit connections with out putting people behind too much restrictions that make using the net a complication.

[Hola hoop]

you can use ABC as a limiter and i am pretty sure the one u are using can be configured, so you can set maximum connections as 10 which should help.

and nchan10111 i did know that he meant seeding and not downloading. If i am seeding at full capacity, i still cannot go on line and play a game as the ping is terrible and intermittent. If i am only seeding this should not effect downloading but it does. I dont know the full technical reasons, but i do know that DavidCane was using known bandwidth limited ports and a change in ports could maybe help.

Definately ABC bit torrent client can be configured. 60 - 100 connections is the default but set to 10 may help with the network.

:t

[sartbeau]

Hi,

I recently had the same problem at my private network. It helped me to reduce the number of downloading/seeding torrents. I just download/seed 2 or 3 torrents concurrently and the network will perform again.

Cheerz.

Harry.

[dajogejr]

Hey...Sart...
Welcome to Sysopt.

You may notice the last post on this thread is 4 1/2 months ago...
Generally users don't dig up old stale threads....


:t