BT Infinity Disconnects I am getting disconnects. I have BT infinity FTTC I am Using Draytek 130 modem and Asus Rt-AC66u running latest Merlin fw, my Draytek System Uptime is 430:25:32 and I...

[Bully]

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

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[UK Sentinel]

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).

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[Bully]

UK Sentinel wrote:

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

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[UK Sentinel]

Bully wrote:

UK Sentinel wrote:

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).

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[Bully]

UK Sentinel wrote:

Bully wrote:

UK Sentinel wrote:

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.

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[UK Sentinel]

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).

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[Bully]

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 >

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[UK Sentinel]

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).

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[Bully]

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

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[UK Sentinel]

Bully wrote:

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).

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[Bully]

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

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[UK Sentinel]

Bully wrote:

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).

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[Bully]

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

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[UK Sentinel]

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).

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[Bully]

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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