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Forums » US Cable Support » Comcast » Comcast HSI » [Connectivity] Comcast throttling?
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[Connectivity] Comcast Southeast (Charleston SC) - Latency incre »
« Upload cuts out for 10 seconds (Download fine)  
Dark Shikari

join:2004-08-17
Reston, VA

[Connectivity] Comcast throttling?

Apparently Comcast has recently started throttling eMule/eDonkey/Kad upload connections. When uploaders try to connect to a client, it instantly issues a 10053 error, disconnecting them. As eMule relies on a credit system, this means all a Comcast user can do is leech.

As I don't use eMule much (only for very rare files and the like), it doens't bother me *too* much, but it still is annoying. Even with various modifications designed to bypass ISP throttling, it still doesn't work.

I would strongly recommend to anyone choosing ISPs who uses eMule to choose another company instead.

Morty
Premium
join:2004-09-18

Re: [Connectivity] Comcast throttling?

Do you have any sort of proof?
Dark Shikari

join:2004-08-17
Reston, VA

See this thread for some other people with the same problem, who concluded it was a problem with Comcast: »forum.emule-project.net/index.ph···p=790482

Morty
Premium
join:2004-09-18

Re: [Connectivity] Comcast throttling?

That's certainly interesting, however that doesn't prove that Comcast is throttling it (or at least on purpose). You would need to have more technical information / locations in order to gain any useful correlation.
Dark Shikari

join:2004-08-17
Reston, VA

Re: [Connectivity] Comcast throttling?

Normans: according to information from those same eMule forums, Cablevision throttles their customers (and creates 10053 errors) by sending fake disconnect packets to uploaders.
NormanS
Premium,MVM
join:2001-02-14
San Jose, CA
·Pacific Bell - SBC

Re: [Connectivity] Comcast throttling?

said by Dark Shikari See Profile :

Normans: according to information from those same eMule forums, Cablevision throttles their customers (and creates 10053 errors) by sending fake disconnect packets to uploaders.
That is not throttling. Forcing a disconnect is not slowing the connection down, it is breaking the connections altogether.
--
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum
Dark Shikari

join:2004-08-17
Reston, VA

Re: [Connectivity] Comcast throttling?

OK, so its not throttling... its worse than throttling >_>
NormanS
Premium,MVM
join:2001-02-14
San Jose, CA

Re: [Connectivity] Comcast throttling?

Yes. But I doubt that Comcast is doing it.
juniorx

join:2006-02-05
St John'S, NL

Re: [Connectivity] Comcast throttling?

lol, i remember when Rogers first throttling our bit torrent, the dslreports forums was filled with 100's post. Im sure if Comcast did throttle p2p, lots of people would be posting in numerous threads.

As for comcast admitting they throttle, they probably wouldnt at first. Rogers reps denied it for months until enough people called in, it force them to give their agents a pretyped comment to read
NormanS
Premium,MVM
join:2001-02-14
San Jose, CA
·Pacific Bell - SBC

said by Dark Shikari See Profile :

Apparently Comcast has recently started throttling eMule/eDonkey/Kad upload connections. When uploaders try to connect to a client, it instantly issues a 10053 error, disconnecting them.
Throttling doesn't cause 10053 disconnects.

»www.google.com/search?q=error+10···official

Check the Rogers Cable forum to find out what the affect of ISP throttling is; Rogers is known to throttle their customers.

»[Extreme] Confirm from rep on throttling?
»[Extreme] Routing issue or Throttling ?
»[ Express] Is Rogers throttling my upload speed?

There are other, older threads, as well. Start by checking your AV software.
--
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum

Morty
Premium
join:2004-09-18

Re: [Connectivity] Comcast throttling?

Hehe, I knew NormanS See Profile would post an excellent reply. I personally don't use emule / torrents that often if ever really.
Dark Shikari

join:2004-08-17
Reston, VA

I suggest you check out »www.filesharingweb.de/mediaWiki/···:Bad_isp

There are a number of providers that throttle their customers in a manner that creates 10053 errors. Its not really "throttling": it completely cuts off the connection rather than just slowing it down.
gd16

join:2006-08-17
Portland, OR

I am having this same problem now in Portland, Oregon. It just started in the last few days. Looks like this is propogating across all of comcast. What a bummer... comcast or qwest. Why can't Verizon be Portland's phone carrier?


AthlGrond
Premium,MVM
join:2002-04-25
Aurora, CO
Which router are you using?
Dark Shikari

join:2004-08-17
Reston, VA

Re: [Connectivity] Comcast throttling?

A D-Link DI-524. Its worked flawlessly up until this started a few weeks to months ago.

AthlGrond
Premium,MVM
join:2002-04-25
Aurora, CO

Re: [Connectivity] Comcast throttling?

Have you tried taking the router out of the loop while running emule to see if it is now causing problems?
gd16

join:2006-08-17
Portland, OR

Re: [Connectivity] Comcast throttling?

I have a D-Link DGL-4300 and have the same problem. Tried all suggested steps...same result

AthlGrond
Premium,MVM
join:2002-04-25
Aurora, CO
·Comcast

Re: [Connectivity] Comcast throttling?

said by gd16 See Profile :

Tried all suggested steps...same result
Sounds like a D-Link Problem then since only people with D-Links are having it.

But seriously, what suggested steps did you take?
--
"When you're an Anvil, hold you still;When you're a Hammer, strike your Fill." -- Benjamin Franklin
gd16

join:2006-08-17
Portland, OR

Re: [Connectivity] Comcast throttling?

taking the router out of the loop.
gd16

join:2006-08-17
Portland, OR
»forum.emule-project.net/index.ph···ry790482
alfnoid
Premium,MVM
join:2002-02-18

little birdies say that it IS so.
It is apparently supposed to affect the incoming (to the comcast network) only...for now anyway.

Don't know any more details as the birdies I listen to didn't have anymore info than that.

I personally don't care about emule/edonkey or that crap, but I do use bit torrent some and would be pissed about that.

peace
NormanS
Premium,MVM
join:2001-02-14
San Jose, CA
·Pacific Bell - SBC

Re: [Connectivity] Comcast throttling?

It would have to be within the last month, or two. I was downloading with BitTornado on a Comcast connection, and got full download speed. In June.
--
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum
gd16

join:2006-08-17
Portland, OR

Re: [Connectivity] Comcast throttling?

this just started happening to me in Portland a few days ago. When I kick BitTornado into super-seeder mode I can maintain connections. The work around is to use encryption via Azareus or uTorrent. But that doesnt help if the people you are connecting to are not running encryption.
gd16

join:2006-08-17
Portland, OR

Re: [Connectivity] Comcast throttling?

and bit torrent works just fine when i am downloading AND uploading. However, when I complete and am only seeding. The connections drop right off to zero.
NormanS
Premium,MVM
join:2001-02-14
San Jose, CA
·Pacific Bell - SBC

Re: [Connectivity] Comcast throttling?

said by gd16 See Profile :

and bit torrent works just fine when i am downloading AND uploading. However, when I complete and am only seeding. The connections drop right off to zero.
Variable nature of the tracker. In the last week I was downloading episodes of an anime show. On a couple of episodes I got very good D/L speeds, on the order of 224KBytes/sec (3008/512 DSL). On others I got lousy downloads. On some episodes there were only a handful of seeders, leechers, or both. At least one episode saw my upload drop to zero after I completed the file, but while I was still in seed mode. When I checked, there were no leechers at all in the torrent.

I once had a show that took five days to download! Very low activity, and I hit 98% complete when the number of seeders went dry.

When I was connected to that Comcast connection, I never saw max download on any anime torrents; I got the max download pulling a Knoppix LiveCD ISO image.

Indeed, after upgrading to AT&T Yahoo! HSI Pro (3008/512), I have yet to max my D/L. If it is "throttling", though, they aren't doing very well. Hard to think that there is throttling when I can get 224KBytes/sec on a good torrent. I suspect that there just aren't enough well populated seeds for the niche genre shows I am fetching.

»torrent.unix-ag.uni-kl.de/http:/···i-kl.de/
--
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum
gd16

join:2006-08-17
Portland, OR

Re: [Connectivity] Comcast throttling?

I see what you are saying in this post...obviously you think I have an extremely low intelligence level.

My peers drop to zero the second I complete. And while the tracker shows 50-60 leechers.... my client sees none. They appear for a brief second until comcast's software sends the disconnect.

I understand how trackers and bittorents work. I am telling you Comcast is doing this now. Perhaps not to you or your service error. But this is really happening to me.
gd16

join:2006-08-17
Portland, OR

Re: [Connectivity] Comcast throttling?

I meant service area.
NormanS
Premium,MVM
join:2001-02-14
San Jose, CA
·Pacific Bell - SBC

said by gd16 See Profile :

...obviously you think I have an extremely low intelligence level.
Can't be any lower than mine.

However, I still have to wonder. What is the point of killing the completed download? The worst impact of upload is saturating the bandwidth, and that is happening during the download, as well as after.

Unless, maybe it isn't bandwidth they are trying to limit, but upload volume? They are willing to let you download, but they don't want you going over a TerraByte of uploaded data? Something like that.

IOW, I can see them capping down/up performance; other cablecos do that routinely. I don't understand letting the torrent run unimpeded until it is complete, then killing it altogether.
--
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum

funchords
Hello
Premium,MVM
join:2001-03-11
Washington, DC
·Verizon Online DSL
·Skype

said by gd16 See Profile :

and bit torrent works just fine when i am downloading AND uploading. However, when I complete and am only seeding. The connections drop right off to zero.
That's normal when super-seeding.
--
Robb Topolski -= funchords.com =- Hillsboro, Oregon USA
~ Keeper of the D-Link FAQ ~ Did you Search? ~ More features, Free! Join BBR! ~

funchords
Hello
Premium,MVM
join:2001-03-11
Washington, DC
·Verizon Online DSL
·Skype


1 edit
said by alfnoid See Profile :

little birdies say that it IS so.
It is apparently supposed to affect the incoming (to the comcast network) only...for now anyway.

Don't know any more details as the birdies I listen to didn't have anymore info than that.
I am seeing evidence of this, but it's not conclusive.

CacheLogic ( »www.cachelogic.com/ ) shows up in my firewall log from time to time. Most recently, they showed up while I was downloading a popular linux distribution -- a legal file -- via BitTorrent. I went to their website and, yes, that's what they do. They identify file sharing traffic for ISPs.

My speed did not seem affected at all. It was a fast swarm. Perhaps it's just monitoring for now. Or perhaps they ignored me because they got dropped at my firewall.
--
Robb Topolski -= funchords.com =- Hillsboro, Oregon USA
~ Keeper of the D-Link FAQ ~ Did you Search? ~ More features, Free! Join BBR! ~
Dark Shikari

join:2004-08-17
Reston, VA
Well I tested eMule at a LAN party not long back and it worked flawlessly.

This of course was with a different ISP and different router.
Dark Shikari

join:2004-08-17
Reston, VA

alfnoid

I use mainly bittorrent also, but there are good uses for eMule. It seems to be the best network for getting very rare files that one can't possibly find on bittorrent or newsgroups. For example, there are all sorts of remixes of songs that would probably take ages to find using google that are right there with emule.

Nerdtalker
Working Hard, Or Hardly Working?
Premium,MVM
join:2003-02-18
Tucson, AZ
clubs:

If they're knowingly throttling upstream, or P2P traffic in general, they sure as heck aren't doing it in my area. I've had my LAMP server seeding torrents day and night for a long time ago, at 20 kilobytes/sec, and haven't been capped, yet.

While it's suspicious, I suspect something else is at play.

Before we jump to conclusions, people should be very specific about what their conditions are, if they're suffering from this alleged "throttling".

If you're currently seeing the behavior characterized in the previous posts, please post:
•What BT client you're using, and the version
•What port you have the service bound to
•Whether you're using encryption (specify forced or not)
•If you can see other seeds/peers, and which ones work
•If you are using NAT, and what model
-and-
•Briefly describe the behavior, whether you cannot seed, whether it cuts in and out, e.t.c.

This information should give us a better picture of what's at play here, and whether Comcast has stooped so low as to throttle BT/P2P traffic, as some other ISPs have done.
--
"Some people never see the light till it shines thru bullet holes." -Bruce Cockburn

I'm testing Gmail's spam filters: Broadbandreports1@gmail.com
Spam: 12900+ messages currently using 406 MB.
gd16

join:2006-08-17
Portland, OR

Re: [Connectivity] Comcast throttling?

I am not posting all of that information for you to analyze. I am employed as a software engineer and have a BS in Computer Science and I am telling you this is happening on Comcast in Portland, Oregon.
NormanS
Premium,MVM
join:2001-02-14
San Jose, CA
·Pacific Bell - SBC

Re: [Connectivity] Comcast throttling?

Portland, Oregon, eh? Not very far from Albany, Oregon, where I had no comparable problems.

Yes, I am analyzing your data. And I am not seeing the same symptoms that Rogers Cable users report, where ISP throttling has been verified.

"He said, she said"...
--
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum
gd16

join:2006-08-17
Portland, OR

Re: [Connectivity] Comcast throttling?

Portland, Oregon, eh? Not very far from Albany, Oregon, where I had no comparable problems.

And when was this? My problems began within the last week.
gd16

join:2006-08-17
Portland, OR

Re: [Connectivity] Comcast throttling?

...and i can work around the problem with encrytion capable clients. But I can only connect to others with encryption. Very typical of shaping schemes.

anoooyyyyed

@bellsouth.net

Re: [Connectivity] Comcast throttling?

gotta say there gd16... that is pretty arrogant to say you know everything because you have a degree.
pretty stupid too.

you may be right as it seems likely that someone with inside knowledge is confirming this to be true, but don't be an jerk with your degree shoved up your ass.

I can tell you of many times where people with masters degrees and even doctorates have told me what is wrong only to prove them wrong once they let me do my job and stop telling me what my job is.

moral of the story is be somewhat open minded to the possibility that you could be wrong...because it IS possible, humans do make mistakes.

funchords
Hello
Premium,MVM
join:2001-03-11
Washington, DC
·Verizon Online DSL
·Skype


1 edit
said by Dark Shikari See Profile :

When uploaders try to connect to a client, it instantly issues a 10053 error, disconnecting them.
10053 is WSACONNABORT which means that the local side (your OS, network software, or device driver) closed the connection on purpose.

Typically:
- software firewall
- no remaining available buffers or ports
- protocol timeouts

Let's rule out the last one, since you said this happens instantly. But it is that last one where Comcast could be implicated. By filtering ACKs and FINs coming back to you, they could create the error number that you're giving -- but it wouldn't be instant -- it would several seconds to several minutes.

I'm wondering what has changed over the past couple of weeks that could be affecting you. I'm on Comcast in Hillsboro and I'm uploading on ED2K and seeding on BitTorrent without issues. I'm using Shareaza which does not support encryption on BitTorrent, yet.

P2P users like to use that hacked TCPIP.SYS file. I don't. Do you? Perhaps one of the recent MS security patches is conflicting with the hacked TCPIP.SYS.

I don't put much weight into those forum reports and the Wiki that you linked. They put Comcast on the list rather quickly, with very little actual evidence. And, like I said before, that error message doesn't really jive with traffic shaping.

I may end up with egg on my face, but try this:

Open a tcp connection (either telnet, ssh, ftp). After it is established, disconnect your network cable on the WAN side of your router. The error message (or other behavior) that you get is the one that Comcast could generate.
--
Robb Topolski -= funchords.com =- Hillsboro, Oregon USA
~ Keeper of the D-Link FAQ ~ Did you Search? ~ More features, Free! Join BBR! ~
Forums » US Cable Support » Comcast » Comcast HSI[Connectivity] Comcast Southeast (Charleston SC) - Latency incre »
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