BT Infinity Disconnects

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  • #3323
    Bully
    Participant
    • Posts 379
    • Regular

    If I increased my snr value would this help reduce interleaving?

    #3324
    UK Sentinel
    Moderator
    • Posts 2438
    • Skipper

    In essence, you ideally are looking for Fastpath both upstream and downstream and increasing SNR could help, I thought your SNR was already 5 or 6 so any increase on this will reduce synch speeds so less bandwidth and 5 or 6 is good already for stability etc.

    What is your ping to http://www.bbc.co.uk ?

    Is you SNR 5 ? (I forget)

    In a completely sane world, madness is the only freedom (J.G.Ballard).

    #3333
    Bully
    Participant
    • Posts 379
    • Regular

    In essence, you ideally are looking for Fastpath both upstream and downstream and increasing SNR could help, I thought your SNR was already 5 or 6 so any increase on this will reduce synch speeds so less bandwidth and 5 or 6 is good already for stability etc. What is your ping to http://www.bbc.co.uk ? Is you SNR 5 ? (I forget)

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
    Approximate round trip times in milli-seconds:
    Minimum = 15ms, Maximum = 25ms, Average = 19ms

    SNR 6

    #3334
    UK Sentinel
    Moderator
    • Posts 2438
    • Skipper

    In essence, you ideally are looking for Fastpath both upstream and downstream and increasing SNR could help, I thought your SNR was already 5 or 6 so any increase on this will reduce synch speeds so less bandwidth and 5 or 6 is good already for stability etc. What is your ping to http://www.bbc.co.uk ? Is you SNR 5 ? (I forget)

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 15ms, Maximum = 25ms, Average = 19ms SNR 6

    A slow round trip ping, I remember reading some time ago about a DrayTek 130 owner whom had a slow line and used the below code to increase synch speed etc

    vdsl snr -50

    Basically this reduces line SNR value, maybe worth a try and if to many DSL disconnects, revert back?

    If no joy then to get back type:      vdsl snr 50

    Edit: never tried this myself ;-)

    In a completely sane world, madness is the only freedom (J.G.Ballard).

    #3335
    Bully
    Participant
    • Posts 379
    • Regular

    In essence, you ideally are looking for Fastpath both upstream and downstream and increasing SNR could help, I thought your SNR was already 5 or 6 so any increase on this will reduce synch speeds so less bandwidth and 5 or 6 is good already for stability etc. What is your ping to http://www.bbc.co.uk ? Is you SNR 5 ? (I forget)

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 15ms, Maximum = 25ms, Average = 19ms SNR 6

    A slow round trip ping, I remember reading some time ago about a DrayTek 130 owner whom had a slow line and used the below code to increase synch speed etc vdsl snr -50 Basically this reduces line SNR value, maybe worth a try and if to many DSL disconnects, revert back? If no joy then to get back type: vdsl snr 50

     

    My thinking was upping the snr to see if it would reduce the interleaving over time, and if it does then revert back to default snr value.

     

    Changing the snr value seems to instantly change the interleave figure, raising the snr reduces the interleave figure and reducing the snr raises the interleave figure.

    #3336
    UK Sentinel
    Moderator
    • Posts 2438
    • Skipper

    I was more interested in seeing if the cmd increased synch speed initially, did it. ?

    I was also interested to see if over time, this caused fastPath to be re enabled ?

    In theory, higher SNR means lower levels or Interleaving, but your situation is unusual and hence lowering SNR might have some benefits.

    If lowering SNR helps Synch, then after a couple of days, try ping http://www.bbc.co.uk and see if this changes ?

    In a completely sane world, madness is the only freedom (J.G.Ballard).

    #3337
    Bully
    Participant
    • Posts 379
    • Regular

    Changing the snr value does change sync speed also.  Higher snr reduces sync speed and lower snr increases sync speed.

     

    I will try your suggestion and decrease snr and see what happens over time.

     

    changed snr to -50, these are my new stats –

    Running Mode            :      17A       State                : SHOWTIME
    DS Actual Rate          : 53027000 bps   US Actual Rate       : 10813000 bps
    DS Attainable Rate      : 61820392 bps   US Attainable Rate   : 10930819 bps
    DS Path Mode            :  Interleave    US Path Mode         :        Fast
    DS Interleave Depth     :      773       US Interleave Depth  :        1
    NE Current Attenuation  :       20 dB    Cur SNR Margin       :        1  dB
    DS actual PSD           :     6. 3 dB    US actual PSD        :    13. 2  dB
    NE CRC Count            :        1       FE CRC Count         :     1368
    NE ES Count             :        1       FE  ES Count         :     1152
    Xdsl Reset Times        :        0       Xdsl Link  Times     :        3
    ITU Version[0]          : fe004452       ITU Version[1]       : 41590000
    VDSL Firmware Version   : 05-07-06-0D-01-07   [with Vectoring support]
    Power Management Mode   : DSL_G997_PMS_L0
    Test Mode               : DISABLE
    ——————————– ATU-C Info ———————————
    Far Current Attenuation :       27 dB    Far SNR Margin       :        6  dB
    CO ITU Version[0]       : b5004946       CO ITU Version[1]    : 544ed086
    DSLAM CHIPSET VENDOR    : < IFTN >

    #3338
    UK Sentinel
    Moderator
    • Posts 2438
    • Skipper

    DS Attainable Rate      : 61820392 bps  is very good (was 44764888 bps) + 16 Mbps

    DS Actual Rate          : 53027000 ( was 38285000 bps) +14 Mbps

    I realise Interleaving has increased, but will be interesting to see what happens after a couple of days

    In a completely sane world, madness is the only freedom (J.G.Ballard).

    #3339
    Bully
    Participant
    • Posts 379
    • Regular

    Actual speed test results are 42 mbps down and 10 mbps up.

    #3342
    UK Sentinel
    Moderator
    • Posts 2438
    • Skipper

    Actual speed test results are 42 mbps down and 10 mbps up.

    You should be hitting 53 Mbps, I forget what router you have  (ASUS) , maybe turn off AiProtection, Try from mobile device, try fixed wire test rather than wifi, if testing via wifi, try 5 ghz

    Maybe QoS is On and should be turned Off (for testing).

    In a completely sane world, madness is the only freedom (J.G.Ballard).

    #3343
    Bully
    Participant
    • Posts 379
    • Regular

    ASUS 86u router.  Ai protection is on and so is QOS.

    • This reply was modified 1 year, 7 months ago by Bully.
    #3345
    UK Sentinel
    Moderator
    • Posts 2438
    • Skipper

    ASUS 86u router. Ai protection is on and so is QOS.

    When house is quiet, disable AiProtection and QoS and see if this makes any difference to speed test via ethernet or 5 GHz

    In a completely sane world, madness is the only freedom (J.G.Ballard).

    #3360
    Bully
    Participant
    • Posts 379
    • Regular

    One day in, new stats –

    DS Actual Rate          : 48996000 bps   US Actual Rate       :  8630000 bps
    DS Attainable Rate      : 61108008 bps   US Attainable Rate   :  8671941 bps
    DS Path Mode            :  Interleave    US Path Mode         :  Interleave
    DS Interleave Depth     :      757       US Interleave Depth  :      181
    NE Current Attenuation  :       20 dB    Cur SNR Margin       :        3  dB
    DS actual PSD           :     6. 4 dB    US actual PSD        :    14. 9  dB
    NE CRC Count            :       98       FE CRC Count         :     1368
    NE ES Count             :       17       FE  ES Count         :     1152
    Xdsl Reset Times        :        0       Xdsl Link  Times     :        2

    #3361
    UK Sentinel
    Moderator
    • Posts 2438
    • Skipper

    Looks like your US Interleave Depth has increased which is not good. and you are now back on 3 SNR hence the slight reduction in synch speed

    Can you ping http://www.bbc.co.uk and see if this has also increased ?

    In a completely sane world, madness is the only freedom (J.G.Ballard).

    #3364
    Bully
    Participant
    • Posts 379
    • Regular

    Request timed out.
    bytes=32 time=23ms =53
    bytes=32 time=24ms =53
    bytes=32 time=24ms =53

    Ping statistics for
    Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
    Approximate round trip times in milli-seconds:
    Minimum = 23ms, Maximum = 24ms, Average = 23ms

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