VDSL Performance & Tuning

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423 posts

Ultimate Geek

#826539 27-May-2013 18:24

Another VDSL Line connected 1h ago, hope I get on to DLM-1

DLM: 8ms/8ms
Distance: 400m
Attenuation: 11db
Speed: 38.4mbit
Target SNRM: 0 (performance settings, no tweak)
SNRM: 12
CRCPM: 0.07 (Expect this to change)

hio77

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Lizard Networks

#826541 27-May-2013 18:27

HowickDota: Another VDSL Line connected 1h ago, hope I get on to DLM-1

DLM: 8ms/8ms
Distance: 400m
Attenuation: 11db
Speed: 38.4mbit
Target SNRM: 0 (performance settings, no tweak)
SNRM: 12
CRCPM: 0.07 (Expect this to change)

inp? if thats DLM-4/6 you have a few issues on your hands..

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hio77

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Lizard Networks

#826545 27-May-2013 18:32

ok, lets see who can break it this time.. since i dont have a Fritz OS 4.0 box to test with, wouldnt be surprised if something broke there now!

http://hio77.com/fritzlog/download/1.1.0.0/fritzboxlog.zip

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HowickDota

423 posts

Ultimate Geek

#826549 27-May-2013 18:38

INP is 2.0/2.0

hio77

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Lizard Networks

#826552 27-May-2013 18:41

HowickDota: INP is 2.0/2.0

DLM-6 and errors? dont suppose you have a splitter/direct connection on that line?

at that rate, dont see it ever holding a DLM-1 if not even being able to get down to it.. 17a is even more unlikly..

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SamF

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#826554 27-May-2013 18:45

hio77:WOOT! broken the 100K in 15 mins mark ;)

Lol, good effort!! :D

Certainly looks like freakishly interesting stuff tho!! I hope you can get it working!!

HowickDota

423 posts

Ultimate Geek

#826557 27-May-2013 18:46

I have a splitter installed

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hio77

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Lizard Networks

#826558 27-May-2013 18:47

SamF: Lol, good effort!! :D

Certainly looks like freakishly interesting stuff tho!! I hope you can get it working!!

mhm.. i might reboot my fritz see if it wants to work after that..

other thing about the 5.0 firmware, it no longer measures uptime in days.. minor but annoying "feature"

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hio77

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Lizard Networks

#826559 27-May-2013 18:48

HowickDota: I have a splitter installed

sounds like a further line issue, could this be the case for you?

Power Issues
It has been proven that faulty power multiboxes can contribute significantly to line stability issues. If you have your Fritz plugged into a multibox and are having issues, try plugging the Fritz directly into the power socket on the wall and see if there is any difference. *10

extension lead? something doesn't sound right..

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SamF

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#826560 27-May-2013 18:48

Does it measure it at all? If so, in what units?

HowickDota

423 posts

Ultimate Geek

#826567 27-May-2013 19:02

OK, it was on a multi plug now it's directly at the wall, can't see any discernible differences other than a very high amount of FEC errors.

hio77

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Lizard Networks

#826595 27-May-2013 19:55

HowickDota: OK, it was on a multi plug now it's directly at the wall, can't see any discernible differences other than a very high amount of FEC errors.

i wouldnt worry about FECs, CRCs are looking better now..

SamF: Does it measure it at all? If so, in what units?

hours, mins seconds.. they simply removed the days.. not a big change, but a minor annoyance :/

nobodys broken my tool yet, whats this :O

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stevehodge

393 posts

Ultimate Geek

#826657 27-May-2013 21:28

hio77: nobodys broken my tool yet, whats this :O

Working fine here (7340 99.05.22)

stevehodge

393 posts

Ultimate Geek

#826663 27-May-2013 21:38

SamF: Right, gotcha, sorry misunderstood what you meant by SNRM in that context. Ok, in that case let's just add SNRMT for SNRM Target and use a +/- notation as below. Could everyone please confirm what I've put there for your figures?

Updated to confirm mine. And added a few others mentioned later.

Attenuation, Distance, Sync, Profile, DLM, CRCPM, SNRM, SNRMT
SamF: 9db, 350m, 50mbit, 8b, 1, 2.5, 11, 0
HowickDota: 6db, 150m, 62.8mbit, 17a, 1, 0.3, 12?, 0?
JamesL: 12-13db, 400m, 34.2mbit, 8b, 1, ?, 12?, 0?
SteveH: 4db, 130m, 47968, 8b, 1, 3, 11, 0
SteveH: 5db, 130m, 44720, 8b, 1, 0.87, 11, 0
SteveH: 5db, 130m, 44720, 8b, 1, 0.52, 11, 0
SteveH: 5db, 130m, 43872, 8b, 1, 0.82, 12, +1
SteveH: 5db, 130m, 42296, 8b, 1, 0.14, 13, +2
SteveH: 5db, 130m, 49576, 8b, 1, 6, 5, 0 (weird sync with very low SNRM)
SteveH: 5db, 130m, 50608, 8b, 1, 19, 11, 0 (another weird sync though SNRM is normal)
SteveH: 6db, 130m, 58616, 17a, 1, 0.08, 14, 2
SteveH: 6db, 130m, 69144, 17a, 2, 0.03, 10, -2
HowickDota: 11db, 400m, 38.4mbit, 8b, 6, 0, 12, 0
fellaintga: 8dB, 200m, 55856, 17a, 1?, 0.02, 12, 0

Fellaintga, did I get yours right?

hio77

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Lizard Networks

#826671 27-May-2013 21:43

stevehodge:
hio77: nobodys broken my tool yet, whats this :O

Working fine here (7340 99.05.22)

awesome ;)

so, rebooted the fritz, commands on the box are working again.. quite a range of error rate recordings on here..


PM Counters for Port 1
Parameter Cur 24hr + Cur 15 min - Port Start = Session | AVM Session
------------------------------------------------------------------------------------
DS FEC_B0 : 0 0 0 0 0
DS FEC_B1 : 26581 16736 0 43317 43317
DS CRC_B0 : 0 0 0 0 0
DS CRC_B1 : 0 0 0 0 0
DS FECS : 153 97 0 250 250
DS ES : 0 0 0 0 0
DS SES : 0 0 0 0 0
DS ESE : 0 0 0 0 0
DS LOSS : 0 0 0 0 0
DS Unavl : 0 0 0 0 0
DS LOS : 0 0 0 0 0
DS SEF : 0 0 0 0 0
DS LOF : 0 0 0 0 0
DS LOM : 0 0 0 0 0
DS HEC_B0 : 0 0 0 0 0
DS HEC_B1 : 0 0 0 0 0
DS LCD_B0 : 0 0 0 0 0
DS LCD_B1 : 0 0 0 0 0
DS NCD_B0 : 0 0 0 0 0
DS NCD_B1 : 0 0 0 0 0
DS UCell_B0 : 0 0 0 0 0
DS UCell_B1 : 0 0 0 0 0
DS ICell_B0 : 0 0 0 0 0
DS ICell_B1 : 0 0 0 0 0
DS RxBlk_B0 : 0 0 0 0 0
DS RxBlk_B1 : 270923 134149 454 404618 404618
DS FECUn_B0 : 0 0 0 0 0
DS FECUn_B1 : 0 0 0 0 0
US FEC_B0 : 0 0 0 0 0
US FEC_B1 : 0 0 0 0 0
US CRC_B0 : 0 0 0 0 0
US CRC_B1 : 0 0 0 0 0
US FECS : 0 0 0 0 0
US ES : 0 0 0 0 0
US SES : 0 0 0 0 0
US ESE : 0 0 0 0 0
US LOSS : 0 0 0 0 0
US Unavl : 0 0 0 0 0
US FeLOS : 0 0 0 0 0
US RDI : 0 0 0 0 0
US LPR : 0 0 0 0 0
US LOM : 0 0 0 0 0
US PO : 0 0 0 0 0
US HEC_B0 : 0 0 0 0 0
US HEC_B1 : 0 0 0 0 0
US LCD_B0 : 0 0 0 0 0
US LCD_B1 : 0 0 0 0 0
US UCell_B0 : 0 0 0 0 0
US UCell_B1 : 0 0 0 0 0
US ICell_B0 : 0 0 0 0 0
US ICell_B1 : 0 0 0 0 0
US TxBlk_B0 : 0 0 0 0 0
US TxBlk_B1 : 74170 36726 124 110772 110772
ReInit : 0 0 0 0 0
InitFailure : 1 0 1 0 0



Get Near End SNR Margin and Attenuation for Bme: 1 Port 1
=================
SNR Margin: 10.5 dB
Attenuation: 8.6 dB
Avg SNR Margin: 10.8 dB
Avg SNR: 44.4 dB


SNR Margin (SNRMpb-0): 11.5 dB
SNR Margin (SNRMpb-1): 10.7 dB
SNR Margin (SNRMpb-2): 0.0 dB
SNR Margin (SNRMpb-3): 0.0 dB
SNR Margin (SNRMpb-4): 0.0 dB

Line Attenuation (LATNpb-0): 6.3 dB
Line Attenuation (LATNpb-1): 27.7 dB
Line Attenuation (LATNpb-2): 0.0 dB
Line Attenuation (LATNpb-3): 0.0 dB
Line Attenuation (LATNpb-4): 0.0 dB

Signal Attenuation (SATNpb-0): 6.5 dB
Signal Attenuation (SATNpb-1): 27.3 dB
Signal Attenuation (SATNpb-2): 0.0 dB
Signal Attenuation (SATNpb-3): 0.0 dB
Signal Attenuation (SATNpb-4): 0.0 dB
 Downstream attainable Line rate : 43996 kbps
 Downstream attainable payload rate : 39256 kbps

avoiding touching anything that screams could break something however..

#include <std_disclaimer>

Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

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