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    uTorrent causing dropped connections

    This is a discussion on uTorrent causing dropped connections within the Sky Broadband help forums, part of the Sky Broadband help and support category; New here but I've been lurking for about a month. I switched to Sky about 2 weeks ago and it ...

    1. #1
      zendiver's Avatar
      zendiver is offline Sky User Member
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      uTorrent causing dropped connections

      New here but I've been lurking for about a month.

      I switched to Sky about 2 weeks ago and it has bee pretty good most of the time. The only hitch I've had is when using uTorrent. It seems to cause my router to drop its connection every couple of minutes and it continues to do so even after having done the following:

      uPnP is off
      correct ports are forwarded
      static IP is assigned
      TCP optimiser optimised
      Ring wire is disconnected on all extensions
      All extensions are filtered except for the one with the router but there is no regular phone equipment on that one
      Router firmware is UberGT running with SNR set to 200%
      I've even tried setting my MTU to 1458

      The extensions are in a star formation and are also quite long (big house) but from what I can tell the line stats look alright.

      Here's the detailed stats from a period when uTorrent hasn't been running:

      /usr/sbin/adslctl: ADSL driver and PHY status
      Status: Showtime Channel: INTR, Upstream rate = 416 Kbps, Downstream rate = 8096 Kbps
      Link Power State: L0
      Mode: G.DMT
      Channel: Interleave
      Trellis: ON
      Line Status: No Defect
      Training Status: Showtime
      Down Up
      SNR (dB): 14.3 13.0
      Attn(dB): 26.0 16.0
      Pwr(dBm): 19.6 0.3
      Max(Kbps): 8864 1184
      Rate (Kbps): 8096 416
      G.dmt framing
      K: 254(0) 14
      R: 12 16
      S: 1 16
      D: 64 8
      ADSL2 framing
      MSGc: 1 1
      B: 254 14
      M: 1 16
      T: 1 1
      R: 12 16
      S: 1.0470 17.0666
      L: 2040 120
      D: 64 8
      Counters
      SF: 4463152 4463150
      SFErr: 0 0
      RS: 606988752 18968387
      RSCorr: 214 304
      RSUnCorr: 0 0

      HEC: 0 0
      OCD: 0 0
      LCD: 0 0
      Total Cells: 1448762791 0
      Data Cells: 2836449 0
      Drop Cells: 0
      Bit Errors: 0 0

      ES: 0 0
      SES: 0 0
      UAS: 47 0
      Total time = 21 hours 5 min 43 sec
      SF = 4463152
      CRC = 0
      LOS = 0
      LOF = 0
      ES = 0
      Latest 1 day time = 21 hours 5 min 43 sec
      SF = 4463152
      CRC = 0
      LOS = 0
      LOF = 0
      ES = 0
      Latest 15 minutes time = 5 min 43 sec
      SF = 20172
      CRC = 0
      LOS = 0
      LOF = 0
      ES = 0
      Previous 15 minutes time = 15 min 0 sec
      SF = 52990
      CRC = 0
      LOS = 0
      LOF = 0
      ES = 0
      Previous 1 day time = 0 sec
      SF = 0
      CRC = 0
      LOS = 0
      LOF = 0
      ES = 0
      15 minutes interval [-30 min to -15 min] time = 15 min 0 sec
      SF = 52930
      CRC = 0
      LOS = 0
      LOF = 0
      ES = 0
      15 minutes interval [-45 min to -30 min] time = 15 min 0 sec
      SF = 52930
      CRC = 0
      LOS = 0
      LOF = 0
      ES = 0
      15 minutes interval [-60 min to -45 min] time = 15 min 0 sec
      SF = 52931
      CRC = 0
      LOS = 0
      LOF = 0
      ES = 0

      When uTorrent is running and sync is held for long enough to get stats it shows a lot, and I mean a LOT, of CRC errors.

      My results from speedtest.net are good and when uTorrent is working download speeds are also good. I just want to figure out why it causes these losses of sync.

      Help much appreciated

      jon



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    3. #2
      chrisypea's Avatar
      chrisypea is offline Sky User Member
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      Re: uTorrent causing dropped connections

      It is more than likely that due to uTorrent that your noise margin is dropping due to the extra bandwith usage.

      Try using Mognut's utility to artificailly raise your noise margin which (hopefully) should fix this problem. Raising to about 12db should sort you.

      Please be aware that this will slightly lower your speed.

      Hope this works, Chris.

    4. #3
      zendiver's Avatar
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      Re: uTorrent causing dropped connections

      I'm running UberGT on the router with the SNR percentage set to 250% now. The line syncs with a SNR of over 15db.

      Max Global Connections in uTorrent are set to 80. The router loses sync even with these settings even when the download rate is less than 100kbps but is happy with HTTP transfers using much more bandwidth.

      Can't figure out why it only happens with torrents.

      jon

    5. #4
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      Re: uTorrent causing dropped connections

      I would lower your upload, it has been known to do this, ie max your connection out and so surfing etc is practically impossible.

      Open uTorrent,

      Options < Preferences < Connection < Bandwidth Limiting set Global Max Upload to 20

      See if that helps?




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    6. #5
      zendiver's Avatar
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      Re: uTorrent causing dropped connections

      Already set at a miserly 17.

      Any more suggestions?

      jon

     

     

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