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    Strange Problem

    This is a discussion on Strange Problem within the Sky Broadband help forums, part of the Sky Broadband help and support category; Hi, Have been an avid reader of this board for some time but have never needed to post before - ...

    1. #1
      jlbweb's Avatar
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      Strange Problem

      Hi,

      Have been an avid reader of this board for some time but have never needed to post before - always been able to find an answer!

      However... recently I have been experiencing a new (to me) problem with my connection. I have the usual noise margin problem which although not fixed is managed by mossywells excellent little app. Now for some reason at irregular periods I lose internet connection but I also lose access to the router - I cannot log into the admin to reboot and mossywells prog cant reboot it either.
      I have a wired connection to the router so wireless is not the issue - the only solution that I have found is to walk downstairs and yank the power lead out. It then re synchronises and is fine for an undeterminable period of time anywhere between 15 mins and a few days.

      I have noticed in my visits to pull the power lead out that the router is warm bordering on hot but I dont know if it was like this before - it is in the open air .

      I have a funny feeling it may be time for a new router however if anyone has any suggestions I would be pleased to hear them.

      I have posted my detailed stats in case they are useful - these were taken when I can get access to the router (obviously) I canít obtain any when the problem has occurred.

      Cheers in anticipation

      Jon


      /usr/sbin/adslctl: ADSL driver and PHY status
      Status: Showtime Channel: INTR, Upstream rate = 768 Kbps, Downstream rate = 4448 Kbps
      Link Power State: L0
      Mode: G.DMT
      Channel: Interleave
      Trellis: ON
      Line Status: No Defect
      Training Status: Showtime
      Down Up
      SNR (dB): 6.7 14.0
      Attn(dB): 52.0 30.5
      Pwr(dBm): 19.3 9.4
      Max(Kbps): 4992 1184
      Rate (Kbps): 4448 768
      G.dmt framing
      K: 140(0) 25
      R: 16 16
      S: 1 8
      D: 64 8
      ADSL2 framing
      MSGc: 1 1
      B: 140 25
      M: 1 8
      T: 1 1
      R: 16 16
      S: 1.1134 8.6153
      L: 1128 208
      D: 64 8
      Counters
      SF: 53458 53456
      SFErr: 15390 0
      RS: 3635198 454376
      RSCorr: 2676283 4
      RSUnCorr: 63169 0

      HEC: 13324 0
      OCD: 0 0
      LCD: 0 0
      Total Cells: 9474582 0
      Data Cells: 110176 0
      Drop Cells: 0
      Bit Errors: 0 0

      ES: 526 0
      SES: 341 0
      UAS: 26 0
      Total time = 15 min 43 sec
      SF = 53458
      CRC = 15390
      LOS = 569
      LOF = 0
      ES = 526
      Latest 1 day time = 15 min 43 sec
      SF = 53458
      CRC = 15390
      LOS = 569
      LOF = 0
      ES = 526
      Latest 15 minutes time = 43 sec
      SF = 2529
      CRC = 2487
      LOS = 1
      LOF = 0
      ES = 43
      Previous 15 minutes time = 15 min 0 sec
      SF = 50929
      CRC = 12903
      LOS = 568
      LOF = 0
      ES = 483
      Previous 1 day time = 0 sec
      SF = 0
      CRC = 0
      LOS = 0
      LOF = 0
      ES = 0


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    3. #2
      reddwarfcrew's Avatar
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      Re: Strange Problem

      Well you have absolutely massive errors on your line and the symptoms you have descirbed are when the NM drops to an unacceptably low level. I dont use the bounce util, but I did think it was designed for this scenario and auto reboot the roiuter when the noise level drops to low and it doesn't get a rely from the 'test site' it pings.

      It could be that your errors are so bad that even the bounce util cant cope with it.

      The errors are the CRC fig vs the SF fig. The CRC fig should be (i think) about 0.1% of the SF fig at most. As you can see, yours is more like 25%!!!!!!

      Have you tried connecting the roiuter to the test socket underneath the bt master socket faceplate?

    4. #3
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      Re: Strange Problem

      You say you have spent some time trying tips from the forum.

      1: Have you turned off uPNP in the router menu which is a known bug.

      2: During the 15 minute period below you had almost 100% line "CRC" errors, ideally they shoudn't exceed 0.1% of the SF's transmitted, so yours are very high. Have you tried the test socket etc etc etc.

      Latest 15 minutes time = 43 sec
      SF = 2529
      CRC = 2487
      LOS = 1
      LOF = 0
      ES = 43

    5. #4
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      Re: Strange Problem

      snap!

    6. #5
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      Re: Strange Problem

      The router is currently plugged into the master socket.

      I am going to try and see if I get the same problems without the router being connected to the phone line which should tell me if it is related to that. As I said git feeling is that it is a router problem.

      Mossywells ap does reboot quite regularly however as I have said when this problem kicks in there is absolutely no access to the router to perform a soft reboot or get any line stats.

    7. #6
      reddwarfcrew's Avatar
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      Re: Strange Problem

      Not the master socket... the test socket underneath the faceplate of the master socket, You need to unscrew the faceplate.

    8. #7
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      Re: Strange Problem

      Sorry - yes unpn if off.

      More stats -

      /usr/sbin/adslctl: ADSL driver and PHY status
      Status: Showtime Channel: INTR, Upstream rate = 768 Kbps, Downstream rate = 5216 Kbps
      Link Power State: L0
      Mode: G.DMT
      Channel: Interleave
      Trellis: ON
      Line Status: No Defect
      Training Status: Showtime
      Down Up
      SNR (dB): 5.4 14.0
      Attn(dB): 52.0 30.5
      Pwr(dBm): 19.4 10.8
      Max(Kbps): 5792 1152
      Rate (Kbps): 5216 768
      G.dmt framing
      K: 164(0) 25
      R: 16 16
      S: 1 8
      D: 64 8
      ADSL2 framing
      MSGc: 1 1
      B: 164 25
      M: 1 8
      T: 1 1
      R: 16 16
      S: 1.0969 8.6153
      L: 1320 208
      D: 64 8
      Counters
      SF: 34168 34166
      SFErr: 7 0
      RS: 2323464 290411
      RSCorr: 535038 14
      RSUnCorr: 226 0

      HEC: 6 0
      OCD: 0 0
      LCD: 0 0
      Total Cells: 7143982 0
      Data Cells: 28863 0
      Drop Cells: 0
      Bit Errors: 0 0

      ES: 7 0
      SES: 5 0
      UAS: 26 0
      Total time = 10 min 14 sec
      SF = 34168
      CRC = 7
      LOS = 92
      LOF = 0
      ES = 7

    9. #8
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      Re: Strange Problem

      your noise is less than 6db. yOu will hit problems when it goes below 7db.

      Try the TEST socket and also you can use mognuts util to set your NM much higher (say 10db).

    10. #9
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      Re: Strange Problem

      Ok - am in the test socket now - will let you know when it has been on a while.

      I have always had problems with nm and reboots hence mossywells app - I can live with that. I just dont understand the sudden and very random lock outs from the router.

      Thanks for your speeds and useful help.

      Jon

    11. #10
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      Re: Strange Problem

      can you post some stats now and then some stats in about 1hr (assuming it lasts that long!!)

     

     
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