Slow Cable Connection

By Sparky Joe
Mar 9, 2007
  1. My cable connection used to be very fast, around 800K bytes per second steady.

    Recently I'm lucky if I get half that. I watch my bandwidth meter now and instead of being a steady speed it jumps all over the place between 150 and 350, I'm lucky if I see 400 or more for half a second.

    Anyone know what may be causing this problem? I've reset my modem several times.
    Only thing different is way back when the superbowl was on I wanted to have it on in the background downstairs. Well to get channel 2 to come in clearly I had to move my cable amplifier closer to the TV and closer to my modem.
    This was a while ago, so imagine I wouldv'e noticed already, but I suppose it's possible I didn't.

    Thanks, Joe
  2. gavinseabrook

    gavinseabrook TS Rookie Posts: 320

    Go to and post your results of a download test, and an upload test.
  3. jobeard

    jobeard TS Ambassador Posts: 9,143   +595

    sounds like a reliability issue to your destination(s). I've been having a rash of
    DNS timeouts and here's how to fine a node that is causing problems.

    Testing your DNS:
    1. get your DNS address from run->cmd /k ipconfig all
    2. then enter pathping $your-dns-address
    a) if you see list packets between your system and the ISP gateway, the
    problem is on your equipment

    b) if it's anywhere else, then you're out of luck and can only complain to the ISP

    You can also test the path to ANY server (eg in the same manner.
    Last week, the connection from (in Los Angeles) to the Dallas host
    was just trashed, with 65% loss!
  4. Sparky Joe

    Sparky Joe TS Rookie Topic Starter Posts: 18

    Thanks for the info.

    I did the test explained above and had 0 packets lost.

    I guess I'll call ComCast on Monday
  5. tipstir

    tipstir TS Ambassador Posts: 2,383   +105

    You say comcast are you getting 6MB or higher packages you don't say? What were you results? Also try click on speed test.
  6. halo71

    halo71 TS Rookie Posts: 1,090

    Sparky, sorry I have no resoulution for you. But I am gonna get Comcast 6Mg soon. Was wondering how often has this happened to you? Or is this the first time?
  7. Sparky Joe

    Sparky Joe TS Rookie Topic Starter Posts: 18

    I'm not sure if I have the 6 or 8 meg line.
    My download speed used to hold steady around 800kBps with burts of over 900. I'm guessing it's a 6meg, though if it is I'm going to opt for the 8.

    This is the first I've had this problem. Last summer I had a problem of the connection going down around 4pm every day for about an hour. The tech came out and installed an amplifier on the line and I haven't had that problem since.

    The speed tests I've run rank me around 3megs right now. I jaust spoke online with comcast and he suggested I remove my router from the setup to see that improves the speed, and if not to then call comcast. So those are my next steps.
  8. tipstir

    tipstir TS Ambassador Posts: 2,383   +105

    How old is that Router? Have you ever try reseting it? If you do a lot of downloading on Linksys Router they ususally need to be reset. When I had my last Linksys it was acting up.

    Download speeds of 800Kbps or 800Mbps still not bad, but have Comcast send out a Level 3 Service Tech to your house, not the installer. The Level 3 guy would know how to fix the problem.

    How's upload speeds?
  9. Sparky Joe

    Sparky Joe TS Rookie Topic Starter Posts: 18

    I'll have to remember to ask for the lev3 tech. I had to call twice when I needed the amplifier. The first guy said "intermittent problems are tough to troubleshoot" which I agree fully, but he also said "go talk to your neighbors when you're experiencing problems to see if they have problems also", Yeah right dumba$$, I'm gonna knock on my neighbors door like an ***** and say "is your internet working"
    Well the second guy suddenly knew how to check signal strength from my computer and put the amplifier in for me and told me to replace my modem if I still have problems, which I did.

    The router is about 4 years old, it's a 'b' and carry's the microsoft name. Resetting it has always scared me due to having to go through all the steps again to get my internet back up.
    If I remember correct it was a bit of a pain the first time, although that was minus 4 years of computer 'fumbles' which gave the vast knowledge I have of them now, ha.

    I know the b is pretty outdated, but my girlfriend only uses the laptop to surf and print the occasional recipe so it's plenty fast. And the Microsoft MSBBN software is very nice and easy to use.

  10. Sparky Joe

    Sparky Joe TS Rookie Topic Starter Posts: 18

    connection is currently over 800K. Will have to wait to see if this sustains during normal hours (not 4am)

    Nothing like getting 600k bytes in 10 minutes.
  11. tipstir

    tipstir TS Ambassador Posts: 2,383   +105

    Remember you rent the internet from Comcast, so you tell them who you want to come out to your home to fix the problem. So I had the same problem with cable service from them. You got to say it right otherwise they send the wrong guy who doesn't know anything. Also ask them how do my coax cable look? If they're old they should be replace with new New R6 2.3GHz Coax Cable. Internet coax is different than the one you use for Cable TV, they're not the same and if you're using the wrong one you'll get lower download speeds. Also the splitter outside too should be replace if it's old. You want the best internet and cable tv and your paying for it monthy so get the best service and replacement parts they have.
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