Warning: Comcast is Now Throttling Broadband

By Kevin Parrish, published on November 6, 2009 at 12:50 PM
Source: Tom's Guide US | Keywords: , , , , | Themes: The Internet, Business
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Comcast subscribers can now sit back and enjoy Internet throttling at its finest.

And so it begins: the Internet is one step closer to a controlled environment thanks to Comcast. Based on information provided by a new FCC notice (PDF), Comcast has already implemented a new traffic throttling system into its broadband service. The new practice replaces the company's stricter traffic block of peer-to-peer uploading. However, Comcast said that there will still be traffic blocks, but only in extreme cases.

According to the document, Comcast's throttling with have two trigger conditions. The first is activated when using more than 70-percent of a subscriber's maximum upstream or upstream bandwidth in a 15 minute span. The second trigger kicks in when the neighborhood Cable Modem Termination System becomes severely congested and evidence indicates that the cause stems from the offending subscriber.

Internet throttling begins when either triggers are tripped, forcing bandwidth traffic to throttle down. The effect endures for at least 15 minutes, or until the average bandwidth utilization rate drops below 50-percent for 15 minutes. Comcast said that certain traffic won't be throttled: low-priority traffic will still zip through uncongested nodes at close-to-normal speeds.

To provide a better understanding, Comcast threw in a bus analogy to explain the two-tier traffic throttling scenario. "If there is no congestion, packets from a user in a BE state should have little trouble getting on the bus when they arrive at the bus stop," the company said. "If, on the other hand, there is congestion in a particular instance, the bus may become filled by packets in a PBE state before any BE packets can get on. In that situation, the BE packets would have to wait for the next bus that is not filled by PBE packets."

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Comments

sstym 11/06/2009 7:08 PM
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So if you enable throttling in your peer-to-peer application to limit the upstream bandwidth to 65%, they won't do anything?

It's kind of funny to see an ISP implement a measure that is both a PR disaster and completely ineffective.
It's kind of a bummer to have so little competition in bandwidth providers that you can't make the worst offender pay for that kind of behavior.

liquidblue 11/06/2009 7:17 PM
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This just in: "Comcast and their overpriced and shitty service is now being limited for an all time low!"

papalarge123 11/06/2009 7:18 PM
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leetoranges 11/06/2009 7:18 PM
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Sigh time to lower my upload speeds D: sigh if only internet was like in korea, or Japan, i dont think they have any problems there with throttleing their customers, and i think that over there, they have alot more freedom on the internet rather than us.

ominous prime 11/06/2009 7:19 PM
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(expletive) YOU COMCAST! Now sit back and watch as your subscribers leave.

montezuma 11/06/2009 7:24 PM
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I am canceling my service with them today. Fuck you Comcast.

homrqt 11/06/2009 7:24 PM
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ominous prime :
(expletive) YOU COMCAST! Now sit back and watch as your subscribers leave.


leave to where?

tester24 11/06/2009 7:26 PM
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That's why I'm glad I live in NY, they can't limit your bandwidth if they are the only carrier in the area because then it's considered a monopoly.

Now here's the big question, what do they consider "extreme".

doomtomb 11/06/2009 7:26 PM
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So you pay for X Mbps but if you use up more than 70% for 15 mins you get throttled. What a bunch of bullshit, we shouldn't have to put up with this.

papasmurf 11/06/2009 7:28 PM
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this has been in effect since January, you ought to check your sources and read carefully. While this is not acceptable at all it is not new, the surprising thing is we didn't hear about it until just now. I've filed a complaint with the fcc and I suggest you all do so as well.

hillarymakesmecry 11/06/2009 7:28 PM
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griffed88 11/06/2009 7:31 PM
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i wish i had another choice, but comcast is all that is available where i live as far as i know.

uh_no 11/06/2009 7:31 PM
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doomtomb :
So you pay for X Mbps but if you use up more than 70% for 15 mins you get throttled. What a bunch of bullshit, we shouldn't have to put up with this.



i was gonna say....if they throttle you when you're using less than the bandwith you paid for, they're asking for a lawsuit...netflix had the same issue with cutting you off from movies if you rented too many in a month and they lost that one....i see comcast facing the same battle soon

deadlockedworld 11/06/2009 7:34 PM
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If they didnt have such a monopoly i would use a different company. If only we could open up cable like landline phone service.

Also-- I agree its ludacris that we get penalized for using the volume purchased...

Anonymous 11/06/2009 7:34 PM
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So if I read this correctly, I'm not allowed to use the bandwidth I have paid for ??..

ooo.. class action suit coming...

Lord-Ilpolazzo 11/06/2009 7:36 PM
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sidran32 11/06/2009 7:36 PM
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I just read the PDF report. As they were previously using protocol specific throttling methods, which people were complaining adamantly about previously, I think this is a positive step. Congestion needs to be controlled. My only hope is that their threshold levels are correct. 70% seems a bit low to me, though the downstream is 80%. I also think that these should probably be more aggressively applied towards users who bought the higher tier services, as they would most likely be larger offenders of network congestion (though cumulatively, lower tier users can also be offenders, so they should not be exempt). Ultimately, though, they should work on upgrading their network so all users can have a better experience, without so much need for throttling.

wayneepalmer 11/06/2009 7:37 PM
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Time Warner is also implementing something like this, too. I've noticed more and more dwell times on downloading video, a lot more website drops in the middle of streaming, hangups on opening pages, etc. As many pc's as it is happening on I know it isn't just something screwy on one system.

I've seen it on Youtube, Hulu, video-linking off Facebook (accessing FB, too), and a whole lot of other places. You didn't see this a year ago and it seems to be getting worse.

Anonymous 11/06/2009 7:40 PM
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Wow, amazing how old news can still hurt a company.
http://www.dslreports.com/shownews [...] ges-105380

FYI, not from Comcast, I have to put up with TWC's RR.

thomasjm52 11/06/2009 7:40 PM
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homrqt :
leave to where?



Good Point! We have Comcast or Qwest and why wld I pay the same amount for less speeds. Maybe I'm weird but I have never had any problems with comcast.

daft 11/06/2009 7:42 PM
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ive noticed the throttling for about 2 weeks now. i don't like it at all. not one of my downloads has ever reached above 200KB/s during the last 2 weeks. parents refuse to change though

blackened144 11/06/2009 7:45 PM
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Jarvis 11/06/2009 7:47 PM
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If I lived in one of these affected areas I would probably get a hold of a hacked modem off ebay and go to town. But that's just me, shrug.

masop 11/06/2009 7:48 PM
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doomtomb :
So you pay for X Mbps but if you use up more than 70% for 15 mins you get throttled. What a bunch of bullshit, we shouldn't have to put up with this.



Yeah, that is retarded isn't it? What if a user was downloading an ISO of Windows 7 from the msdn site or a Linux Distribution? How about another random app or game that is 500MB to 1GB in size? Then there are downloadable movies, such as those being streamed through Netflix. What is the point in paying for something you can't fully utilize? I'm just glad I'm throttle and cap free wiht my FIOS service, but we aren't all that fortunate to have a better option besides Comcast to choose from. :-)

blackened144 11/06/2009 7:51 PM
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daft :
ive noticed the throttling for about 2 weeks now. i don't like it at all. not one of my downloads has ever reached above 200KB/s during the last 2 weeks. parents refuse to change though


Is that just for torrents? Ive been downloading from newsgroups all week at full speed. I usually limit my torrent uploads to a max of 100k anyway, so I'd never get to 70% of my available upload bandwidth.

RahBoT 11/06/2009 7:56 PM
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its so easy to use up 50GB of internet BW in a month I so. I listen to muisc online, I download movies, download games, play online games all the time. Not only that but when you take almost all the internet providers out there and thier service is like 1.5Mbps-10Mbps+ download but they only allow you 768Kbps upload you know more and more games are needing higher than that just so that you don't get disconnected from thier network. One game I'll tell you that needs that is MAG for PS3. So there is a few others but I cant connect because my internet is 1.5Mbps/768Kbps which really runs like 1.8Mbps/365Kbps. I always call my ISP and tell them get my internet fixed I need faster upload. The only time I can MAG is closer to the afternoon hours.

santeana 11/06/2009 7:56 PM
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I live in Ontario. My ISP had a different answer. Although they were quick to hop onto this capping bandwagon, they saw a dollar to be made. Rather than simply throttle it back, they instead charge extra for the overages. It adds up fast too. I was over on my last months BW usage and my bill had $17 in additional charges. ($1.50/GB) This month was shaping up to be even more according to the phone conversation I just had with my ISP. I was looking at a $30 overage charge. The bill would have worked out to be the same as their top-tier 16Mbps/125GB package so I just upgraded today lol :P

daft 11/06/2009 7:58 PM
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blackened144 :
Is that just for torrents? Ive been downloading from newsgroups all week at full speed. I usually limit my torrent uploads to a max of 100k anyway, so I'd never get to 70% of my available upload bandwidth.


no, its for everything. a simple 2 minute youtube video is even taking upwards of 3 minutes to finish downloading. toms homepage is averaging about 40 seconds as well

doc70 11/06/2009 8:02 PM
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so, lemme get this straight: is this trigger applied only to upstream limitation, or is by downstream as well? IN general, upload speeds are anyways more limited than download, maybe except for T1 lines, so theoretically it should not limit the ability to , say, watch Hulu or other videos at full available speed.
Knowing the weasels at ISPs, though, I suspect the throttling will apply to both, upload and download.

Codesmith 11/06/2009 8:04 PM
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Don't forget the 2nd trigger condition. You got throttled for being an "offending subscriber.

A friend of mine her ISP recently oversold her area and now she can no longer steam netflix without the movie halting every 15 min. I wonder her attempt to use neflix makes her an "offending subscriber" and she is being throttled.




liquid0h 11/06/2009 8:10 PM
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hillarymakesmecry :
I, for one, am glad I have comcast.Bandwidth throttling could be a good thing. If I'm trying to play some online games and the neighbors kid is slowing down my local internet down by up and downloading 1 tb or more a month and preventing me from playing my games on the connection I'm paying for. Then throttle away.I probably use 50gb a month.



Are you a member of Comcast's marketing dept?


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