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What can I do ?

Discussion in 'Networks & Internet Connectivity' started by juno_first, 4 Mar 2006.

  1. juno_first

    Mobster

    Joined: 18 Apr 2003

    Posts: 2,575

    Location: England

    I signed up with an ISP in November 2005 as I was told that due to my distance from the exchange I could get 12.5 mbits adsl2 & was advised to get their adsl2 router (dg834gt) @ £80,which I did.

    For the first day of service in January 2006 I was getting 4mbits, then it dropped to 3.3 for the next 5 weeks.

    For the past 3 weeks its been erratic -mostly giving me 1mbits.
    I asked my ISP to help, as my speed was lower & it was taking 5 minutes to load google.com. They advised to cap my connection at a lower speed, and then another lower speed; with each time yielding a lower connection speed & web page download problems, as they said that due to my distance from the exchange I was having problems (4.2km).

    It seems that whenever I moan by at my ISP, my connection improves for a few days (4mbits 55db line att., 10db noise margin) then drops to a lower speed soon after which results in page download problemsl, eg:
    Connection Speed 1120 kbps 576 kbps
    Line Attenuation 63.5 db 31.5 db
    Noise Margin 6.0 db 9.0 db

    Surely my phone line cant just depreciate all by itself ?, I get the impression my ISP is messing me about and I have wrote & spoke to them with no joy & just received email replies with very poor grammer.
    I have tried every option at my end including router firmware, new microfilter, different pc/modem & there is only 1 phone socket with just the router in it.

    I just want to be able to load web pages and download / play games & found 3.3mbits to be ok for this purpose.

    I am signed into a 12month contract with this ISP who will not provide an internet service & wonder if another ISP could give me a working internet connection.

    What can I do ?, as if I cancel my contract my ISP will surely charge me a line rental penalty fee.
     
  2. sja360

    Mobster

    Joined: 28 Jul 2003

    Posts: 3,940

    Location: Dundee

    which ISP is this? also how come you didnt say to them that it works fine at 3.3mbp? or does it not always work? also for 4.2Km that's an impressive line speed, im 2.3km odd straight line and dont even get over 1mbp currently.
     
  3. juno_first

    Mobster

    Joined: 18 Apr 2003

    Posts: 2,575

    Location: England

    UK-Online, did not know if it was ok to slander ISP here...

    I'm 1.7km straight line (my checking) / 4.2km line length (according to ISP).
    I emailed them - that I was getting 3.3mbits (55db line att., 10db noise margin) for 5 weeks, so why has it dropped now, then my connection increased to 4mbits/768kbps upload for a short while and now its back to 1mbits with eg. google loading in 1 min.
     
    Last edited: 4 Mar 2006
  4. Xee

    Wise Guy

    Joined: 13 Jun 2003

    Posts: 1,184

    Location: In front of PC

    You dont want to be on ADSL2/2+ with that attenuation! get them to change your connection down to the normal 8meg version (chepaer aswell), and then get support to CAP you at about 4 meg i would say. Trial and error from then on, you may need to go lower or higher.

    And yes you noise margin will drop during certain parts of the day (all by itself - no your ISP is not messing you around :rolleyes: )

    Good luck ;)
     
  5. juno_first

    Mobster

    Joined: 18 Apr 2003

    Posts: 2,575

    Location: England

    Oh, thanks.
    I was getting a bit paranoid.
    I've been capped to 16, 8, 4, 3
    and each time it was slowed, things got worse.
     
  6. tolien

    Caporegime

    Joined: 16 May 2003

    Posts: 25,368

    Location: ::1

    Erm, slander? :confused:

    With that attenuation, that's crap. There's no way they should've promised that.

    The speed problems are most probably packet loss. If you're pushing the connection hard enough, you'll start seeing thousands of errors.
     
  7. juno_first

    Mobster

    Joined: 18 Apr 2003

    Posts: 2,575

    Location: England

    no errors, just very slow connection:
    at the moment I have to keep rebooting the router every 20 minutes (bringing noise margin up to 7db) as when the noise margin drops to 6db I cant load web pages, yet last week it ran at 4mbits 55db line att. 10db noise margin for 4 days solid.
    I've just had to reboot the router to post this & its:
    Connection Speed 1280 kbps 576 kbps
    Line Attenuation 63.5 db 31.5 db
    Noise Margin 6.9 db 9.0 db

    Historically, capping the connection just made is worse & thats all my ISP will do, which is why I don't know what to do.

    2 years ago I used to have a 576kbps adsl connection & then ran great, I wonder if capping my connection to 576 will give me a stable connection ?, though its a bit sad and annoying.
     
    Last edited: 4 Mar 2006
  8. tolien

    Caporegime

    Joined: 16 May 2003

    Posts: 25,368

    Location: ::1

    Is the modem reporting any?

    All you really can do is keep dropping the sync rate to improve the SNR margin. Interleaving would be another option.
     
  9. juno_first

    Mobster

    Joined: 18 Apr 2003

    Posts: 2,575

    Location: England

    Just checked my router logs:
    Sat, 2000-01-01 00:00:23 - Administrator login successful - IP:192.168.0.2
    Sat, 2000-01-01 00:00:35 - Initialize LCP.
    Sat, 2000-01-01 00:00:35 - LCP is allowed to come up.
    Sat, 2000-01-01 00:00:53 - CHAP authentication success
    Sat, 2000-01-01 00:01:03 - Send out NTP request to time-g.netgear.com
    Sat, 2006-03-04 12:03:21 - Receive NTP Reply from time-g.netgear.com
    Sat, 2006-03-04 12:03:36 - TCP Packet - Source:66.68.92.191,3511 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:37 - TCP Packet - Source:24.3.33.191,2805 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:37 - TCP Packet - Source:70.187.68.172,2031 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:38 - TCP Packet - Source:64.16.181.124,3804 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:39 - TCP Packet - Source:66.68.92.191,3511 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:40 - TCP Packet - Source:70.244.36.15,1589 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:40 - TCP Packet - Source:24.3.33.191,2805 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:43 - TCP Packet - Source:70.187.68.172,2031 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:44 - TCP Packet - Source:210.213.143.6,62501 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:44 - TCP Packet - Source:24.222.156.241,4564 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:45 - TCP Packet - Source:66.68.92.191,3511 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:46 - TCP Packet - Source:70.246.51.113,60108 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:46 - TCP Packet - Source:70.244.36.15,1589 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:46 - TCP Packet - Source:221.113.60.29,1296 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:46 - TCP Packet - Source:24.3.33.191,2805 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:49 - TCP Packet - Source:211.30.185.181,3464 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:50 - TCP Packet - Source:212.9.99.110,2798 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:51 - TCP Packet - Source:70.246.51.113,60108 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:51 - TCP Packet - Source:71.36.104.24,2629 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:52 - TCP Packet - Source:88.105.35.14,3822 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:52 - TCP Packet - Source:211.30.185.181,3464 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:54 - TCP Packet - Source:70.246.51.113,60108 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:54 - TCP Packet - Source:71.36.104.24,2629 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:03:55 - TCP Packet - Source:88.105.35.14,3822 Destination:87.81.198.178,4830 - [DOS]
    Sat, 2006-03-04 12:12:45 - Administrator login successful - IP:192.168.0.2

    87.81.198.178 is my fixed IP, i've ran netstat & there's nothing dodgy, i've tested for my best MTU which is 1492.
    Whats interleaving ?
     
  10. tolien

    Caporegime

    Joined: 16 May 2003

    Posts: 25,368

    Location: ::1

    It's something trying to connect to port 4830 on your router. Not relevant to this though...

    Interleaving would give you more speed at the same SNR margin (or a higher SNR margin at about the same speed). Nothing you can change though (UKO would need to do it).