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Comcast Cuts Off Users Who Exceed Secret Limit 574

ConsumerAffairs.com has an article up spotlighting Comcast's tendency to cuts off heavy Internet users without defining in their AUP exactly what the bandwidth limit is. Frank Carreiro of West Jordan, Utah, got cut off by the mystery limit and started a 'Comcast Broadband dispute' blog.
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Comcast Cuts Off Users Who Exceed Secret Limit

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  • by ystar ( 898731 ) on Monday August 27, 2007 @02:46AM (#20368729)
    I'm always connecting to the servers and especially my own box at school when i'm at home. I'm swapping huge data files back and forth, backing stuff up, and vnc-ing. Comcast can only see that everything is going through ssh. Add all the non-copyright infringing youtube videos, linux distros and kernels, so on and so forth, to that and I'm already a huge drain without even pirating anything. If they announce their secret limit, they better let their customers see some reports on our own traffic, especially *according to what they're measuring.*

    If they include as part of the limit all the packet and port snooping they're apparently doing on their customers, I want to know.
  • Dupe (Score:2, Informative)

    by Tweekster ( 949766 ) on Monday August 27, 2007 @02:49AM (#20368759)
    Seriously, this is a dupe. Eventually people are just gonna have to accept that "reasonable" limits do exist on a service.

    I think they should specify what those limits are, but lots of limits in life are not strictly specified, basically be reasonable. speed limits might have a specified limit, however everyone goes at a speed of whats reasonable and ignores the hard limit.

    this is a dupe because it is now known comcast does this. it isnt news, it isnt shocking, it is well known, it is stupid but it isnt gonna change.

    they should just specify somethign in their agreement and be done with it, "250 gig transfer per month"
    no one really gives a shit if its called "unlimited" anyways, all they care about is how fast it is.

  • Re:In other news... (Score:4, Informative)

    by Ron Bennett ( 14590 ) on Monday August 27, 2007 @02:50AM (#20368769) Homepage
    Yep so true.

    In many places, such as in Pennsylvania, often the state troopers will give a +15 MPH leeway ... so a driver going 79 MPH in 65 MPH zone would likely *not* get a ticket. Personally, I stick with 5 to 10 MPH over the speed limit max, but I know many people who swear by the +15 MPH rule.

    On a related note, in some states, such as Pennsylvania, some speed detection methods, in particular Vascar (timing), has a +10 MPH leeway ... so again, even in lower speed limit zones, such as a 25, one often can drive nearly 15 MPH over that and likely not get a ticket...

    Of course, if the driver admits speeding even 1 mile over than that above stated leeway likely won't matter... also, some states have "absolute" speed limits - there is no leeway so to speak ... something a driver should be aware of when driving through some small towns that rely on speeding tickets for revenue; PA outlawed radar for most local police decades ago for just that reason and thus many local PA towns are forced to use Vascar instead.

    Often an officer will try to get the driver to admit to speeding and then play nice cop by offering to write a ticket for only going x over the limit, etc.

    Digressed, but there really is a "secret" speed limit in most places, though many drivers quickly figure it out over time...

    I'd imagine similar is true for high-bandwidth users ... many of them have figured out how far they can push it.

    Ron
  • by Fedhax ( 513562 ) on Monday August 27, 2007 @03:01AM (#20368815)
    See my comment here: http://yro.slashdot.org/comments.pl?sid=280157&cid =20368801 [slashdot.org]

    Nut-shell: Unless you opt out, you are bound to arbitration only by their 2007 Residential Agreement. There are restrictions and exceptions, but you have to overcome them before you can consider legal recourse.
  • by arth1 ( 260657 ) on Monday August 27, 2007 @03:02AM (#20368819) Homepage Journal
    I also have Comcast cable and ADSL (but although AT&T owns the copper, I'm not using them as a service provider due to them using PPPoE, which increases packet fragmentation and reduces speed). But what I do is load balancing the two on the router, and polling the usage on each line from my router using SNMP. If the usage is high for a while, I reduce the relative amount of traffic being routed through the cable connection.

    Of course, this being a simple dual-WAN router, it's not true load balancing, but a weight-distributed round robin scheme for new outgoing connections. However, in the long run, that causes the traffic to fall into the same pattern too.

    Also, all SMTP traffic goes over ADSL, because Comcast blocks destination port 25 unless it's to their mail servers. I understand their reasoning for doing so, but I think the reason doesn't in any way justify the action. Better would be to shut down the customers who send spam instead of limiting everyone, and instead of shutting down people who may use the bandwidth they were promised for for legitimate uses.

  • by Sycraft-fu ( 314770 ) on Monday August 27, 2007 @03:29AM (#20368909)
    Then I don't have a whole lot of sympathy. Yes, Comcast should still state what the limit is. I can understand why they don't want to since it would encourage people to use more, and they'd have to develop a tool for you to check on it, but they still should do it.

    However I'm not really that sympathetic to the people hitting it. 300GB is a shitload of traffic. I run a couple web servers (business class cable account) and download anything that catches my fancy like large demos, as well as watch any video I want online, and I've never hit that. That's 10GB a day, for the whole damn month. You really have to try to generate traffic like that. I mean I absolutely don't restrict myself in any way, I pay for a business account it really is unlimited (I have an SLA) and the connection is fast 10mb/1mb. Still rare the month I even do half of that, and that's accounting the 50GB or so that the servers do.

    I still think Comcast needs to state the limit, but people can't pretend like you can buy cheap access, slam it 24/7, and expect not to have someone get annoyed.

    It's the same deal on the campus where I work. We don't want to do something dick like rate limit people's connections. I mean we've got fast access, it's nice to have fast downloads. You need to get a Knoppix DVD? Get on a good torrent and you'll get it at 5mbytes/sec or more. However, that doesn't mean that you are free to do that all the time. If you did, it'd suck up too much campus bandwidth. It works because people will get what they want and then go back to low usage, allowing others to have a share. If everyone tried to max it, well everything would go slow.

    So, rather than rate limit connections so that you can't do it, but always put up with slow downloads, it is a situation of if you don't keep it reasonable, you'll get yelled at, or get your port shut down if you still won't comply. There's not a hard limit, it is basically a "When you are causing problems," situation. During the summer? Go nuts pretty much. When Knoppix 5 came out I got permission to seed it over a weekend and did about 1.5TB of transfers. During the year during the week? Hell no, there are tens of thousands of others using the connection, be respectful of it.

    Same deal with Internet at your home. The less you are paying, the more shared it is and the more restrictions you can expect. If you want less restrictions, you can generally pay for it. I bought business cable which allows me to run servers and doesn't really cap bandwidth usage, though I'm still sharing the spectrum with other people on my segment. If I wanted I could further move up to something more dedicated like a T1, for more money. The higher up the chain you go, the less you share it.

    Sounds to me like they just want people to keep it reasonable. You don't really need to download 50 movies a month and a thousand MP3 and 10 large game demos and so on (which is the kind of thing it would take to hit 300GB). Morality of infringing on copyrighted material aside, you just need to keep it more reasonable and you'll be fine.

    That or pony up the cash for a better class of service. I hesitate to recommend Speakeasy now that Best Buy owns them, and in fact that's why I switched to business class cable (Cox, not Comcast), but they don't do any restrictions at all on their high end accounts. They aren't the only provider out there that does that. However, you do pay a bit more. Expect to pay about $100/month for a 6mb/768k DSL like. That is generally equal or inferior to what you'd get with $30-40 cable service. However, Speakeasy is charging an amount sufficient that they can afford to have you run servers and and use that line fully. The cable company is not (for the consumer account).
  • by Anti_Climax ( 447121 ) on Monday August 27, 2007 @03:34AM (#20368941)
    The topography of DSL and Cable really aren't as dissimilar as you make them out to be. Most DSL is being handled through remote terminals, which are essentially a telco rack in a freestanding cabinet with a battery back-up (preferrably non-explosive) and Fiber back to the Telco's network. The fiber may handle voice and data or just voice, but either way, the data link through the fiber is Multiplexed to all the DSL subscribers fed by that cabinet. Provided the total of the link speeds offered to the subscribers is less than the fiber link, you get "guaranteed" bandwidth on your DSL. However there is nothing besides the phone company's own goodwill that prevents them from overselling the total bandwidth from that cabinet. Hell, most DSL providers won't even guarantee the rate your line will sync at and that's only the rate from your modem to the DSLAM. It says nothing of the speed behind it. I know from personal experience that you can sync a customer to a DSLAM at 8mbit/sec when there's only 3mbit behind it.

    SATA150 won't change the speed of a file transfer from a hard drive that can only read 40MB/sec at the platter.

    With cable, most areas are fed by a residential gateway that's connected back to their network through Fiber. In places that offer digital cable, the video signal is pulled off for transmission and video on demand stuff and the pure data portion is multiplexed to all the cable modems that are served by that gateway. Now I'm not sure how many homes are served by one gateway, but I've been told that they are setup to handle several thousand customers. Just like with DSL they can oversell the available bandwidth, and if they did it would behave exactly the same way.

    So in reality, neither offers "guaranteed" bandwidth. One may offer a guaranteed line rate, but that means nothing without the bandwidth to back it up. It just depends on the providers when it comes to deciding which is better. I'm glad Cox has there act together here in Phoenix (my 12Mbit connection pulls over 13 from good servers any time of day)
  • by datapharmer ( 1099455 ) on Monday August 27, 2007 @03:40AM (#20368961) Homepage
    It isn't the radar that is inaccurate. It is the analog speedometer found in most cars. The NTSB only requires car manufacturers to calibrate within +-3MPH. Most calibrate on the low side, but you can still argue the point. Most states actually require more than +3MPH to ticket for this reason. Additionally most local agencies have policies that require even higher speeds because wasting time in court means one less officer on the street. As much as I dislike authority figures harassing me the truth is that the object is to protect people and if they are tied up in court with traffic offenses they can't stop violent offenders so it usually isn't worth fighting over 5MPH.
  • Re:_Only_ 100 GB?? (Score:2, Informative)

    by Seumas ( 6865 ) on Monday August 27, 2007 @04:02AM (#20369049)
    Take your average decent-quality audio station. Listen to it for 8 to 12 hours a day while you work. There's 80gb.

    Add streaming videos, downloadable videos (vongo, anyone?), streaming music services (Rhapsody?), VPN connections, surfing, downloading any other stuff like games, linux, porn, etc. Add online gaming from your systems or consoles. And that's just one person. What if you have two people in the household? Or a family of four or five?

    Just because you only use your car to drive to church on Sundays doesn't mean the rest of us don't drive to work, the gym, vacations, joy-rides and the store.
  • by Seumas ( 6865 ) on Monday August 27, 2007 @04:20AM (#20369117)
    Business class of service? According to comcast, the EXACT same rules and limits apply to business accounts. In fact, business accounts have been banned for too much bandwidth, too.

    I went out of my way to call comcast and say "Look, I don't want to abuse anything. I want to be a good, paying customer. I need XYZ amount of bandwidth per month and I'm willing to pay for it. I'll take a business account or two residential accounts (or three if you want). Just tell me what I need to pay to get the services I need and not be kicked off by you guys?".

    The answer? "Yeah, we don't have anything like that -- sorry".
  • by Pitr ( 33016 ) on Monday August 27, 2007 @05:22AM (#20369349)
    Wasn't there a story recently about arbitration clauses being declared illegal? Checking...

    http://yro.slashdot.org/article.pl?sid=07/08/19/21 22250 [slashdot.org]

    Yeah, there it is. So the hard part of setting a precident has already been done, though someone still has to jump through the hoops of challenging comcast's version.
  • by Moraelin ( 679338 ) on Monday August 27, 2007 @05:44AM (#20369465) Journal
    Wasn't that exact same clause ruled unconscionable for AT&T already? I'm pretty sure there was a story about that on Slashdot's front page a couple of weeks ago. So the precedent already exists.

    And frankly, while IANAL, it should have been obviously so all along, even in corporation-owned USA. A clause saying "if you have any grievance with me, I'm the sole judge, jury and executioner on that" just isn't how the rule of the law was supposed to work. It's not just a blatant conflict of interest all the way, it's essentially proclaiming someone exempt from the laws and rules that bind everyone else.

    The contract is _not_ sacrosanct and doesn't override laws in any civilized country. E.g., you can't sell yourself into slavery even if you wanted to, because there's a law against that. Otherwise everyone would sneak "you are now my property" in the fine print or some would go beat someone up until they sign such a contract.

    Heck, AFAIK even in the USA there is this provision that contract clauses that are unexpected and unreasonable to a normal person, are essentially worthless. If you rent a car from my hypothetical car loan shop, I can't come afterwards and say "ha ha, in the small print says I now own your home and I just adopted your firstborn too", because that's clauses which don't belong there and aren't expected. I certainly can't see how an "I'm above the law" clause would be any more allowed.

    So it's just one of those crap EULA-type clauses that's there just to hopefully scare you into believing it, not because it's actually legal or enforceable. Some corporations figured out that instead of just lobbying for more power, they'll just claw away at your rights by just telling you that you're bound to give them some powers, and hoping that you'll actually believe it.

    Disturbingly enough, it seems to actually work.
  • Re:Not that bad... (Score:1, Informative)

    by Anonymous Coward on Monday August 27, 2007 @05:55AM (#20369509)
    "The reason Comcast doesnt tell you is if they did, asshat downloaders would lawyer the total and if lets say it was 100, they'd use 99.9999 then whine if they were denied that much."

    if 100 is the product which they're selling, then so what? Bandwidth available isn't a "mystery prize".

    "Plus its a competitive disadvantage for Comcast if their competitors know what a soft limit on dl's is. You'd generate a race to the bottom over max downloads, again, the tactic would backfire."

    You mean, competition?

  • Re:Serious useage (Score:3, Informative)

    by michaelhood ( 667393 ) on Monday August 27, 2007 @06:31AM (#20369675)
    I logged in just to post this and save you a giant =( in the Spring.

    FYI a T1 is something like 1.544mbps. 1544/8 = 193kBps.

    I regularly sustain 1200kBps on my cable connection when downloading, and even average cable speeds are 600kBps (~5mbps) or better. So, whether you realize it or not, you're going to notice a significant reduction in browsing and casual download speeds.

    T1s used to be the "rave" because of their increased reliability, and significantly lower latency than traditional consumer options. Today, though, not so much. I haven't experienced an outage from my cable ISP (Cox) in about a year, and my latency to my colocated box in LA (35 miles, 4 networks of peering away) is 15-25ms on average.

    In regards to your comments about service availability: T1s are sensitive to distance just like DSL is, perhaps not to the same degree. I'm not sure of the specific ranges, but suffice to say you cannot get a properly performing T1 50,000 feet from your CO (the servicing Telco's "Central Office").
  • by arivanov ( 12034 ) on Monday August 27, 2007 @07:09AM (#20369845) Homepage
    They do not have to, but they do after they ended up being a total laughing stock in a courtroom 10+ years ago when the defence lawyer measured the judge travelling at 9mph while sitting on the bench. As a result the case got thrown out with prejudice.

    From there on the staff which processes offences got trained not to try to prosecute if the offence is within the camera precision limit (which for classic Gatso with double photo verification is around 5%). This is where the 5% comes from. The new cameras have considerably better measurements. The speed averaging ones can probably measure better than a car speedo.

    Coming back onto the Comcast topic I do not see what Comcast problem is. Their AUP are a classic case of tehcnical incompetence being compensated via admin measures.

    1. Downstream they can police at the CMTS. I have yet to see one that cannot do QoS. Even the "Dear Cretins" wankers over here have shown capable of doing that.

    2. Upstream - DOCSIS past 1.0 allows the CMTS to tell which station can speak at which particular moment. As a result any station can be throttled and controlled and made to comply to the policy. All it takes is to program the CMTS to start filling the MAPs with some meaningfull information and decrease the part which is "free for all".

    3. On top of that they provision the modems and what they do not want to do on the CMTS can be done by simply tftping a new config onto the modem which is something the management system should be able to do in bulk per product category (you do not even need to click on individual stations).

    So this is a classic case of "cable and brains do not mix".
  • Re:Dupe (Score:3, Informative)

    by rasjani ( 97395 ) on Monday August 27, 2007 @07:11AM (#20369853) Homepage

    this is a dupe because it is now known comcast does this. it isnt news, it isnt shocking, it is well known, it is stupid but it isnt gonna change.
    Nah. Its a dupe because it has been discussed in /. previously: http://slashdot.org/article.pl?sid=07/03/12/231620 9 [slashdot.org]
  • by zero_offset ( 200586 ) on Monday August 27, 2007 @08:09AM (#20370157) Homepage
    Only true from the most literal and technical standpoint, and certainly not an explanation for any leeway the police might give drivers. At these speeds, the difference from temperature and wear would be a very small fraction of 1 MPH, particularly just a few months later (versus the entire life of the tires).

    Installing tires that are one inch larger in diameter will only add about 2 MPH around 70 MPH. A one inch change in diameter is a far bigger difference than you'll ever see due to wear and temperature. If you're bored, you can see this using a calculator here [discounttiredirect.com].

    In fact, you can game the inputs to reflect changes due to tire wear. For instance, a regular new car tire's tread depth is typically about 10/32", and the legal minimum in most US states is 1/16" so at most your overall lifetime diameter change due to wear should vary about half an inch, which equates at most to a 1 MPH difference at 70 MPH.

    I race cars for a hobby so I'm very aware of tire pressure and temperature changes and how they relate, and the change in the overall diameter of a tire because of these factors would be too small to warrant discussion. There are specialty racing tires made from very soft compounds that would create a small but measurable effect but a heavy steel-belted street radial isn't going to change enough to matter.
  • Re:I know the limit! (Score:4, Informative)

    by Kinthelt ( 96845 ) on Monday August 27, 2007 @09:04AM (#20370463) Homepage
    Don't you mean NO CARRIER?
  • by ghyd ( 981064 ) on Monday August 27, 2007 @09:25AM (#20370603)
    Say you live in France and watch TV on your computer. At 3.5 mbps second for the average channel (some channels have a low bandwidth version, and some others are HD and I think that they consume around 8/10mbps). Let's say you look TV 4 hours a day (which seems about average for US people?). 6 x 60 x 60 x 3.5 = 75600 megs in one week if I'm not mistaken (I hope I'm not :). Add the phone and downloads, it may make a lot. Well I'm sure happy that my 30 17mbps line (why 17 ? it's the maximum my line can do, so my ISP thinks there's no reason to give less, which seems about right to me, and I can say that everyone got used to it by now) doesn't have download caps, because otherwise I couldn't even use the services I have (TV, HDTV,movie VOD, free VOD for the programs I missed). I'm sorry for all the people stuck with bad lines and no services, I'm sure in a few years from now US people will have much better lines than we do (especially if Google gets interested in it) but sometime some ADSL related posts/threads seem to pop out of 4 years ago.
  • by plague3106 ( 71849 ) on Monday August 27, 2007 @09:40AM (#20370743)
    The house and the radar operator were stationary, but there was some wind. Look it up, this has been documented.
  • Re:I know the limit! (Score:3, Informative)

    by A Pancake ( 1147663 ) on Monday August 27, 2007 @10:43AM (#20371543)
    You would be the first. I was previously a supervisor for a technical support call center for Comcast and while we dealt with abuse cases I couldn't tell you what the caps are.
  • by theleoandtherat ( 1115757 ) on Monday August 27, 2007 @11:27AM (#20372183)
    Comcast High-Speed Internet Acceptable Use Policy;

    Prohibited Uses and Activities


    Prohibited uses include, but are not limited to, using the Service, Customer Equipment, or the Comcast Equipment to:,

    ii. post, store, send, transmit, or disseminate any information or material which a reasonable person could deem to be objectionable, offensive, indecent, pornographic, harassing, threatening, embarrassing, distressing, vulgar, hateful, racially or ethnically offensive, or otherwise inappropriate, regardless of whether this material or its dissemination is unlawful;

    ------

    So what are most people with Comcast real doing, if not looking at pornographic material...
  • by Hybrid34 ( 887840 ) on Monday August 27, 2007 @12:24PM (#20372995)
    The biggest (50%+ marked share) ISP in Norway, Telenor, tried something similar some years ago. There was a monthly quota, somewhat depending on your package/speed (the cheap ones had lower quota. I don't remember the exact number). If you hit the limit, the connection would drop to ISDN speeds. You could then either wait until the next month for the quota (and speed) to reset, or pay some money to add more bytes to your quota for that month. They also had a tool that measured how much you'd used, and one-click buying of more bytes. By paying some extra money each month, you could get "free" internet usage during the night that didn't count towards the download limit. It was widely despised, and Telenor's competitors took great advantage of that in their ads (Telenor was pretty much alone in limiting downloads). They were eventually forced to drop their quota system.
  • by or-switch ( 1118153 ) on Monday August 27, 2007 @06:40PM (#20377405)
    They won't tell you because

    1) It informs their competitors

    2) It may not be a hard cap but may be looking at the top 1% of users month to month and seeing if they're consistently high, or just spiked.

    3) They could be looking neighborhood by neighborhood, explaining why one poster lost his net and a little while later so did his neighbor. The neighbor was probably close to being in the top 1% and then was when the first person lost their connection.

    4) I could see them wanting to limit illegal downloads because of past cases seeking to sue the carriers for illegal data being sent on their network. The largest downloaders are most likely (though not necessairly) transmitting/downloading illegal content.

    5) There are several people who posted that they are running their business, or are logged into their business 24/7, and that's not what residential accounts are for. I do use my residential account for work once in a great while, and for less bandwidth than downloading a TV program for iTunes, but if you're VPNed in constantly and transferring large files for work, your employer should be getting you a business account.

    6) The other issue I haven't seen mentioned is that really large use could be an indicator to Comcast that multiple people are sharing a connection. With wireless routers and bridges it is possible for multiple appartments/condos/and even some single family dwelling users to share a connection (I get my neighbors unencrypted router at full strength and full speed). I don't know if Comcast would have a better method than 'huge overages' to be able to tell that this is the case. It truly wouldn't be fair if a bunch of my neighbors were splitting one connection and degrading the quailty of my service with only me using it.

    7) This could also be a sign that someone's router is hijacked and performing illegal activities without the owner's consent. Sadly, they should be helping the user fix it, but most people at the helpdesk at multiple cable proviers indicate a low level of technical expertise.

    8) It's been a while since I checked but I think the agreement says you won't run servers off the residential line. They might be assuming that the large useage is resulting from something like that.

    Since joining the corporate world I usually find that strange and illogical policies like, "Unlimited usage within reason" are the result of some kind of assumptions being made that don't translage well into policy. It could be as simple as a consultant saying, "A 300 GB/month user HAS to be hosting an illegal HD-DVD sharing site and you could get sued by Hollywood for not doing something about it," or, "Those limits are being hit by multiple units sharing a single connection and costing you money while degrading their neighbors service."

    They should just work with the customer rather than, I suspect, assuming you're a criminal and cutting the service. "Cut down the usage," is probably corporate relations way of saying, "We know what you're REALLY doing, now knock it off." Clearly if you stop illegal file sharing your usage would snap in line with the 'average' user.

    As proof of the corporate simple thinking I offer this personal experience: I once lost my cable the day after a windstorm. Calling the company I was told, "We're showing an outage in your area." Ok, windstorm was bad and a temporary loss is ok in cases like that. Days and then weeks go by and they keep telling me, "We're showing an outage in your neighborhood. I then find my neighbors (in a condo complex) are connected. Apparently "area" is your box in your house only. I realized that my neighbor across the hall moved away without telling anyone. Several phone calls later I convinced them to come make sure they hadn't disconnected my cable when disconnecting the neighbors cable. "Sir, that doesn't happen, but we'll come check but if that's not the case you're paying for the visit." Sure enough, wrong switch, and they reimbursed my lost time.

  • by Anonymous Coward on Monday August 27, 2007 @11:15PM (#20379879)
    Use a NAT box which can measure your bandwidth usage (avg, max). If it's a linux box you could log those stats and use them to argue with the poor comcast customer support rep on the other end. So long as you're polite, patient, yet assertive, my experience has been you can get them to cooperate. You may not get an answer regarding how much is too much, but you can ask them if your measurement matches theirs. If it doesn't you can then ask for the case to be reviewed. You could point out how you're worried that their numbers aren't right, cast doubt on the security of the network (yours and/or theirs), etc.

If you think the system is working, ask someone who's waiting for a prompt.

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