Kitz Forum
Broadband Related => FTTC and FTTP Issues => Topic started by: bogof on April 01, 2020, 11:51:43 PM
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(EDIT - subject changed as it seems clearly not a banding issue)
My line would usually run at around 75 down / 17 up. I had an issue with my line which over the course of a couple of months was intermittently on and off, finally realised I was losing dialtone every so often. EE arranged for an engineer to visit.
First engineer knocked on door and changed faceplate, removed extension wiring and found nothing (line still intermittent but not broken when he visited), second one went to cabinet straight away without getting in touch, and found a fault in the street cab.
I noticed the resync happen and popped out to see; and sure enough the guy was doing my line so I asked him about it and whether he would reset it - he said he didn't need to as I was getting pretty good speed now (80 down but only 12 up). It appears the 12 up might have "stuck" due to DLM perhaps? Or could it be for other reasons?
Is there any chance of my upstream coming back?
I was on a HH6 during the debacle; these were the logs from that coming and going with the fault:
06/01/2020 11:42 DSL Link Up: Down Rate=73993kbps, Up Rate=15654kbps; SNR Margin Down=8.7dB, Up=6.0dB
08/01/2020 06:12 DSL Link Up: Down Rate=73993kbps, Up Rate=15930kbps; SNR Margin Down=9.2dB, Up=6.0dB
11/01/2020 10:49 DSL Link Up: Down Rate=73993kbps, Up Rate=15949kbps; SNR Margin Down=8.9dB, Up=6.0dB
18/01/2020 12:39 DSL Link Up: Down Rate=73993kbps, Up Rate=15497kbps; SNR Margin Down=8.9dB, Up=6.0dB
01/02/2020 19:27 DSL Link Up: Down Rate=73993kbps, Up Rate=15676kbps; SNR Margin Down=8.8dB, Up=6.0dB
02/02/2020 19:55 DSL Link Up: Down Rate=73993kbps, Up Rate=16554kbps; SNR Margin Down=9.0dB, Up=6.0dB
08/02/2020 06:30 DSL Link Up: Down Rate=73993kbps, Up Rate=15877kbps; SNR Margin Down=9.0dB, Up=6.0dB
11/02/2020 20:15 DSL Link Up: Down Rate=73993kbps, Up Rate=15348kbps; SNR Margin Down=9.0dB, Up=6.0dB
21/02/2020 06:18 DSL Link Up: Down Rate=73993kbps, Up Rate=15355kbps; SNR Margin Down=9.0dB, Up=6.0dB
21/02/2020 18:40 DSL Link Up: Down Rate=73993kbps, Up Rate=15684kbps; SNR Margin Down=8.7dB, Up=6.0dB
23/02/2020 04:36 DSL Link Up: Down Rate=73993kbps, Up Rate=15983kbps; SNR Margin Down=8.2dB, Up=6.1dB
25/02/2020 00:46 DSL Link Up: Down Rate=73993kbps, Up Rate=15900kbps; SNR Margin Down=8.0dB, Up=6.1dB
25/02/2020 04:44 DSL Link Up: Down Rate=73993kbps, Up Rate=16106kbps; SNR Margin Down=8.2dB, Up=6.0dB
25/02/2020 14:32 DSL Link Up: Down Rate=20658kbps, Up Rate=11380kbps; SNR Margin Down=9.6dB, Up=7.9dB
25/02/2020 14:33 DSL Link Up: Down Rate=20658kbps, Up Rate=11380kbps; SNR Margin Down=-8.3dB, Up=6.0dB
25/02/2020 14:35 DSL Link Up: Down Rate=22876kbps, Up Rate=11048kbps; SNR Margin Down=6.2dB, Up=6.1dB
25/02/2020 14:38 DSL Link Up: Down Rate=22787kbps, Up Rate=10820kbps; SNR Margin Down=6.2dB, Up=6.3dB
25/02/2020 15:45 DSL Link Up: Down Rate=22787kbps, Up Rate=10820kbps; SNR Margin Down=-15.2dB, Up=6.2dB
25/02/2020 15:46 DSL Link Up: Down Rate=73993kbps, Up Rate=15433kbps; SNR Margin Down=8.1dB, Up=6.0dB
25/02/2020 16:54 DSL Link Up: Down Rate=73993kbps, Up Rate=16116kbps; SNR Margin Down=8.1dB, Up=6.1dB
25/02/2020 20:40 DSL Link Up: Down Rate=73993kbps, Up Rate=15646kbps; SNR Margin Down=8.1dB, Up=6.0dB
26/02/2020 02:16 DSL Link Up: Down Rate=69972kbps, Up Rate=13333kbps; SNR Margin Down=6.1dB, Up=6.1dB
26/02/2020 05:35 DSL Link Up: Down Rate=70895kbps, Up Rate=13645kbps; SNR Margin Down=6.0dB, Up=6.1dB
26/02/2020 17:50 DSL Link Up: Down Rate=70564kbps, Up Rate=13893kbps; SNR Margin Down=6.0dB, Up=6.0dB
26/02/2020 22:23 DSL Link Up: Down Rate=71306kbps, Up Rate=10790kbps; SNR Margin Down=6.0dB, Up=6.1dB
28/02/2020 03:06 DSL Link Up: Down Rate=71306kbps, Up Rate=10790kbps; SNR Margin Down=-2.2dB, Up=6.4dB
28/02/2020 03:07 DSL Link Up: Down Rate=70919kbps, Up Rate=11899kbps; SNR Margin Down=6.3dB, Up=15.9dB
28/02/2020 03:08 DSL Link Up: Down Rate=71438kbps, Up Rate=10585kbps; SNR Margin Down=6.1dB, Up=6.0dB
28/02/2020 03:29 DSL Link Up: Down Rate=71438kbps, Up Rate=10585kbps; SNR Margin Down=-2.2dB, Up=6.1dB
28/02/2020 03:30 DSL Link Up: Down Rate=71441kbps, Up Rate=10507kbps; SNR Margin Down=6.0dB, Up=6.0dB
01/03/2020 17:41 DSL Link Up: Down Rate=71441kbps, Up Rate=10507kbps; SNR Margin Down=-2.2dB, Up=6.0dB
01/03/2020 18:01 DSL Link Up: Down Rate=21099kbps, Up Rate=9733kbps; SNR Margin Down=6.1dB, Up=5.3dB
02/03/2020 03:36 DSL Link Up: Down Rate=21394kbps, Up Rate=9949kbps; SNR Margin Down=6.2dB, Up=6.0dB
02/03/2020 04:19 DSL Link Up: Down Rate=21468kbps, Up Rate=9940kbps; SNR Margin Down=6.2dB, Up=6.0dB
02/03/2020 08:43 DSL Link Up: Down Rate=21468kbps, Up Rate=9940kbps; SNR Margin Down=-6.0dB, Up=5.8dB
02/03/2020 08:44 DSL Link Up: Down Rate=70788kbps, Up Rate=10138kbps; SNR Margin Down=6.2dB, Up=6.0dB
03/03/2020 14:42 DSL Link Up: Down Rate=21109kbps, Up Rate=9253kbps; SNR Margin Down=6.2dB, Up=6.3dB
03/03/2020 15:22 DSL Link Up: Down Rate=21109kbps, Up Rate=9253kbps; SNR Margin Down=5.2dB, Up=-8.5dB
03/03/2020 15:22 DSL Link Up: Down Rate=21109kbps, Up Rate=9253kbps; SNR Margin Down=0.0dB, Up=0.0dB
03/03/2020 15:23 DSL Link Up: Down Rate=71495kbps, Up Rate=11108kbps; SNR Margin Down=6.1dB, Up=6.0dB
03/03/2020 15:42 DSL Link Up: Down Rate=21985kbps, Up Rate=9677kbps; SNR Margin Down=6.2dB, Up=6.4dB
03/03/2020 15:47 DSL Link Up: Down Rate=21985kbps, Up Rate=9677kbps; SNR Margin Down=-14.9dB, Up=6.3dB
03/03/2020 15:47 DSL Link Up: Down Rate=21985kbps, Up Rate=9677kbps; SNR Margin Down=6.0dB, Up=2.6dB
04/03/2020 04:20 DSL Link Up: Down Rate=21345kbps, Up Rate=9693kbps; SNR Margin Down=6.2dB, Up=6.0dB
04/03/2020 12:24 DSL Link Up: Down Rate=21490kbps, Up Rate=10375kbps; SNR Margin Down=6.1dB, Up=6.2dB
07/03/2020 00:26 DSL Link Up: Down Rate=21490kbps, Up Rate=10375kbps; SNR Margin Down=-4.7dB, Up=5.5dB
07/03/2020 00:27 DSL Link Up: Down Rate=22765kbps, Up Rate=11522kbps; SNR Margin Down=6.2dB, Up=6.0dB
09/03/2020 15:59 DSL Link Up: Down Rate=22765kbps, Up Rate=11522kbps; SNR Margin Down=-13.7dB, Up=6.0dB
09/03/2020 15:59 DSL Link Up: Down Rate=22765kbps, Up Rate=11522kbps; SNR Margin Down=-14.0dB, Up=6.0dB
09/03/2020 16:01 DSL Link Up: Down Rate=22943kbps, Up Rate=10166kbps; SNR Margin Down=6.2dB, Up=6.4dB
10/03/2020 06:44 DSL Link Up: Down Rate=23018kbps, Up Rate=10596kbps; SNR Margin Down=6.1dB, Up=6.1dB
11/03/2020 14:39 DSL Link Up: Down Rate=23018kbps, Up Rate=10596kbps; SNR Margin Down=-1.2dB, Up=6.0dB
11/03/2020 14:40 DSL Link Up: Down Rate=73993kbps, Up Rate=11865kbps; SNR Margin Down=7.3dB, Up=6.4dB
14/03/2020 15:05 DSL Link Up: Down Rate=32989kbps, Up Rate=13627kbps; SNR Margin Down=-0.6dB, Up=0.0dB
14/03/2020 15:06 DSL Link Up: Down Rate=23869kbps, Up Rate=10741kbps; SNR Margin Down=6.2dB, Up=6.0dB
15/03/2020 03:10 DSL Link Up: Down Rate=23869kbps, Up Rate=10741kbps; SNR Margin Down=-7.0dB, Up=6.0dB
15/03/2020 04:19 DSL Link Up: Down Rate=23995kbps, Up Rate=10226kbps; SNR Margin Down=6.1dB, Up=6.3dB
15/03/2020 11:00 DSL Link Up: Down Rate=23995kbps, Up Rate=10226kbps; SNR Margin Down=6.0dB, Up=6.2dB
15/03/2020 14:19 DSL Link Up: Down Rate=73993kbps, Up Rate=12384kbps; SNR Margin Down=6.0dB, Up=6.0dB
I've since installed a setup using a Vigor 130 and ditched the HH6 (on top of the line fault, it seemed to reset a lot) and the stats last night looked like:
> vdsl status
vdsl status
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Running Mode : 17A State : SHOWTIME
DS Actual Rate : 79995000 bps US Actual Rate : 11511000 bps
DS Attainable Rate : 98583752 bps US Attainable Rate : 11644600 bps
DS Path Mode : Fast US Path Mode : Fast
DS Interleave Depth : 1 US Interleave Depth : 1
NE Current Attenuation : 9 dB Cur SNR Margin : 6 dB
DS actual PSD : -1.-9 dB US actual PSD : -1.-8 dB
NE CRC Count : 0 FE CRC Count : 60884
NE ES Count : 0 FE ES Count : 43412
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 : 7 dB Far SNR Margin : 6 dB
CO ITU Version[0] : b5004946 CO ITU Version[1] : 544eb206
DSLAM CHIPSET VENDOR : < IFTN >
> vdsl status more
vdsl status more
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Near End Far End Note
Trellis : 1 1
Bitswap : 1 0
ReTxEnable : 0 0
VirtualNoise : 0 0
20BitSupport : 0 0
LatencyPath : 0 0
LOS : 0 0
LOF : 0 0
LPR : 0 0
LOM : 0 0
SosSuccess : 0 0
NCD : 0 0
LCD : 0 0
FECS : 0 1216953 (seconds)
ES : 0 43412 (seconds)
SES : 0 351 (seconds)
LOSS : 0 1263 (seconds)
UAS : 40 195956 (seconds)
HECError : 0 0
CRC : 0 60884
RsCorrection : 0 0
INP : 0 0 (symbols)
InterleaveDelay : 0 0 (1/100 ms)
NFEC : 255 255
RFEC : 16 16
LSYMB : 3088 21451
INTLVBLOCK : 255 255
AELEM : 0 ----
After 24 hrs it looks like this:
> vdsl status
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Running Mode : 17A State : SHOWTIME
DS Actual Rate : 79995000 bps US Actual Rate : 11511000 bps
DS Attainable Rate : 98488136 bps US Attainable Rate : 11614450 bps
DS Path Mode : Fast US Path Mode : Fast
DS Interleave Depth : 1 US Interleave Depth : 1
NE Current Attenuation : 9 dB Cur SNR Margin : 6 dB
DS actual PSD : -1.-9 dB US actual PSD : -1.-8 dB
NE CRC Count : 12 FE CRC Count : 60890
NE ES Count : 10 FE ES Count : 43418
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 : 7 dB Far SNR Margin : 6 dB
CO ITU Version[0] : b5004946 CO ITU Version[1] : 544eb206
DSLAM CHIPSET VENDOR : < IFTN >
> vdsl status more
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Near End Far End Note
Trellis : 1 1
Bitswap : 1 1
ReTxEnable : 0 0
VirtualNoise : 0 0
20BitSupport : 0 0
LatencyPath : 0 0
LOS : 0 0
LOF : 0 0
LPR : 0 0
LOM : 0 0
SosSuccess : 0 0
NCD : 0 0
LCD : 0 0
FECS : 131 1217153 (seconds)
ES : 10 43418 (seconds)
SES : 0 351 (seconds)
LOSS : 0 1263 (seconds)
UAS : 40 195956 (seconds)
HECError : 0 0
CRC : 12 60890
RsCorrection : 0 0
INP : 0 0 (symbols)
InterleaveDelay : 0 0 (1/100 ms)
NFEC : 255 255
RFEC : 16 16
LSYMB : 3088 21451
INTLVBLOCK : 255 255
AELEM : 0 ----
The XDSL link times above was me having a bit of a play; I did do a "vdsl snr -50". Before that the stats were looking like this:
vdsl status
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Running Mode : 17A State : SHOWTIME
DS Actual Rate : 79995000 bps US Actual Rate : 11611000 bps
DS Attainable Rate : 81209032 bps US Attainable Rate : 11614332 bps
DS Path Mode : Fast US Path Mode : Fast
DS Interleave Depth : 1 US Interleave Depth : 1
NE Current Attenuation : 9 dB Cur SNR Margin : 6 dB
DS actual PSD : -1.-8 dB US actual PSD : -1.-7 dB
NE CRC Count : 14 FE CRC Count : 60884
NE ES Count : 12 FE ES Count : 43412
Xdsl Reset Times : 0 Xdsl Link Times : 1
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 : 7 dB Far SNR Margin : 6 dB
CO ITU Version[0] : b5004946 CO ITU Version[1] : 544eb206
DSLAM CHIPSET VENDOR : < IFTN >
vdsl status more
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Near End Far End Note
Trellis : 1 1
Bitswap : 1 1
ReTxEnable : 0 0
VirtualNoise : 0 0
20BitSupport : 0 0
LatencyPath : 0 0
LOS : 0 0
LOF : 0 0
LPR : 0 0
LOM : 0 0
SosSuccess : 0 0
NCD : 0 0
LCD : 0 0
FECS : 142 1216952 (seconds)
ES : 12 43412 (seconds)
SES : 0 351 (seconds)
LOSS : 0 1251 (seconds)
UAS : 33 195877 (seconds)
HECError : 0 0
CRC : 14 60884
RsCorrection : 0 0
INP : 0 0 (symbols)
InterleaveDelay : 0 0 (1/100 ms)
NFEC : 255 255
RFEC : 16 16
LSYMB : 3115 21451
INTLVBLOCK : 255 255
AELEM : 0 ----
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No its not banded, you can clearly see the upstream SNR margin is 6dB so its going as fast as it can.
Its definitely strange though that you can get full downstream speed but a limited upstream. Both my lines hit the 20Mbit upstream even though neither can achieve full downstream speed any more.
I can only guess you must have some interference somewhere in the upstream frequencies. Does make me wonder if there is still a fault though?
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Thanks @Alex Atkin UK . The 1st engineer did mention in passing that I was affected by some crosstalk - odd though that the drop in upstream seemed coincident with my line coming and going, and that coming and going at least has now cleared.
Is there any other DLM intervention that could be affecting the upstream only? Going down the theory of the frequencies; do you know if there is any way to get more information out of the modem about the various frequencies in use and any metrics the modem has for them?
I guess my chances realistically of getting anyone at Openreach to care about my line when the download is so good are close to zero unless it starts getting really fail-y again.
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As Alex said, your SNRM is 6dB so its going as fast as it can. Same theory applies to both upstream and downstream so unlikely to be DLM related.
RE frequency info from the modem - You can using a HG612 and DSLstats.
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You can see frequency graph in dsl stats in vigor, also you can try different modem fw in dsl settings in your vigor to see if that change anything. When I tested different fw on my vigor I see that on some of them modem sync with ridiculous low upstream, downstream was O.K.
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As Alex said, your SNRM is 6dB so its going as fast as it can. Same theory applies to both upstream and downstream so unlikely to be DLM related.
The thing that got me wondering about DLM type things was that running "vdsl snr -50" did give me about a 20mbit increase in sync downstream sync (see the stats) but didn't actually seem to affect the SNR reported. I wondered if the cabinet might have applied the "inverse" at there end to my upstream. Not very scientific I know, but I didn't understand why the increase in downstream sync.
RE frequency info from the modem - You can using a HG612 and DSLstats.
OK, don't have one of them. I think my old original 2013 vintage white box which is still functional is an ECI one.
You can see frequency graph in dsl stats in vigor, also you can try different modem fw in dsl settings in your vigor to see if that change anything. When I tested different fw on my vigor I see that on some of them modem sync with ridiculous low upstream, downstream was O.K.
That sounds interesting. Note the HH6 also was syncing around this kind of level yet was previously synching higher, which makes me think it is less likely. I saw there is one alternative firmware on Draytek's site - is that the only alternative?
Do you have any specifics for how to get the chart on the Vigor? I did try searching quickly and didn't turn up anything for this modem. Appreciate any pointer in the right direction.
EDIT: Got it, looks like vdsl showbins is the command.
EDIT2: Looks like it is only the downstream that is reported? Need to read up on this a bit more...
EDIT3: OK, vdsl showbins and vdsl showbins up. Will have to figure out how to chart this.
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To change vdsl fw on current fw
Wan->general setup-> wan1-> dsl wan code (should be two to choose)
Also in dsl stats you got tab on the top "tone information"
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To change vdsl fw on current fw
Wan->general setup-> wan1-> dsl wan code (should be two to choose)
Also in dsl stats you got tab on the top "tone information"
At the risk of sounding like a total thicky...
My Vigor 130 Modem is on 3.8.4.1 BT bought from NetXL, which appears to be the latest UK firmware.
The options you describe seem totally missing from the webUI - the webUI seems to have very little in it at all.
Are you describing another device, or a different firmware which isn't the BT version?
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I'm using vigor 2760 in bridge mode, possibly more options on mine, however you should be able to change modem code, even vigor 130 got two. I also use bt latest fw, but I can choose between 576D17 and 574307 from drop down list. Looking on your stats you use now 576D17, I was using this one as well but find out that 574307 is more stable (snr don't fluctuating so much).
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I'm using vigor 2760 in bridge mode, possibly more options on mine, however you should be able to change modem code, even vigor 130 got two. I also use bt latest fw, but I can choose between 576D17 and 574307 from drop down list. Looking on your stats you use now 576D17, I was using this one as well but find out that 574307 is more stable (snr don't fluctuating so much).
From what I can see (unless I'm being blind) there is no drop down menu or similar on the current firmware for the Vigor 130 (3.8.4.1 BT) to allow choice of a modem code for the xDSL modem. If you have this menu can you grab a screenshot of it so I can see where it is?
I see on the Draytek website there is a link to an entire firmware image which it appears may have a different modem firmware in it, but that sounds quite different to what you're describing.
https://www.draytek.co.uk/support/downloads/vigor-130/send/257-vigor-130/1806-v130-3841-bt
And:
https://www.draytek.co.uk/support/downloads/vigor-130/send/257-vigor-130/1809-v130-3841-579f17
You mention modem code: 574307
That sounds like a very old modem code, I see it referenced all the way back to 2015?
http://www.draytek.co.uk/download/support/readme_v130.txt
***********************************************************************************
Release Notes for Vigor 130
Firmware Version : 3.7.8.1
Release Date : 17th June 2015
Firmware Build : 5th June 2014
Applicable Models : Vigor 130
ADSL Firmware : VDSL: 574307_A ADSL: 571801_A
Locale : UK & Ireland Only
***********************************************************************************
For more UK product details & specification, please visit www.draytek.co.uk
[New Features]
1. Baby Jumbo Frames
2. Vectoring
3. G.INP(G.998.4 TX and RX retransmission)
[Improvements]
1. Corrected issue with PPPoE Passthrough with VLAN TAG.
2. Corrected issue with RFC-1483 Routed IP LLC
[Notes]
- See http://www.draytek.co.uk/support/product-knowledgebase for Vigor 130 setup examples.
***********************************************************************************
Release Notes for Vigor 130 Series
Firmware Version : 3.7.8 (initial release)
Release Date : 15th January 2015
Firmware Build : 26th November 2014
Applicable Models : Vigor 130
ADSL Firmware : VDSL: 567517_A ADSL: 562301_A
Locale : UK & Ireland Only
***********************************************************************************
First Firmware Release
[New Features]
None.
[Improvements]
None.
For what it is worth, this is the information I've managed to get using the "vdsl showbins" and "vdsl showbins up" commands. (attached)
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Not sure how old it is, but is attached in latest fw 3.8.9.4_BT for vigor 2760.
Option for change modem code on screenshot.
While 576D16 is recommended by BT, the 574307 is recommended by Draytek if have issues wit other one.
Also attached example of tone information option on my Draytek.
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Not sure how old it is, but is attached in latest fw 3.8.9.4_BT for vigor 2760.
Option for change modem code on screenshot.
While 576D16 is recommended by BT, the 574307 is recommended by Draytek if have issues wit other one.
Also attached example of tone information option on my Draytek.
Thanks, there's nothing like that on the Vigor 130.
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Well, interestingly today I noticed the US atainble rate had crept up a smidge; I rebooted the DSL in the Vigor 130 and I got almost exactly a 1mbit / sec upload increase. We'll see if this is an upward trend back to where I was, or just a blip. Would love to know what the mechanism is.
vdsl status
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Running Mode : 17A State : SHOWTIME
DS Actual Rate : 79995000 bps US Actual Rate : 12642000 bps
DS Attainable Rate : 98364632 bps US Attainable Rate : 12759132 bps
DS Path Mode : Fast US Path Mode : Fast
DS Interleave Depth : 1 US Interleave Depth : 1
NE Current Attenuation : 9 dB Cur SNR Margin : 6 dB
DS actual PSD : -1.-6 dB US actual PSD : -1.-5 dB
NE CRC Count : 11 FE CRC Count : 275
NE ES Count : 10 FE ES Count : 172
Xdsl Reset Times : 0 Xdsl Link Times : 8
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 : 7 dB Far SNR Margin : 6 dB
CO ITU Version[0] : b5004946 CO ITU Version[1] : 544eb206
DSLAM CHIPSET VENDOR : < IFTN >
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So this happened after a modem reboot last night - momentarily immediately after sync the US actual and attainable were both around 14500000, and then the US attainable dropped to 12500000ish with the far SNR at 4dB, though the US actual has stuck for now.
However the line seems to be working OK at 14500000 - fast pings (as fast as they were) and getting the benefit of the extra throughput.
This is now almost 3.5mbit faster upstream than I had dropped down to with no internal changes.
I'm guessing if this is on a knife edge that there is a good chance on a reboot I'll see the rate drop again.
Does anyone know if there is any utility that can automatically or semi-automatically generate the tone graphs from the CLI info on these units?
vdsl status
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Running Mode : 17A State : SHOWTIME
DS Actual Rate : 79995000 bps US Actual Rate : 14538000 bps
DS Attainable Rate : 98390776 bps US Attainable Rate : 12597660 bps
DS Path Mode : Fast US Path Mode : Fast
DS Interleave Depth : 1 US Interleave Depth : 1
NE Current Attenuation : 9 dB Cur SNR Margin : 6 dB
DS actual PSD : -1.-6 dB US actual PSD : -1.-6 dB
NE CRC Count : 2 FE CRC Count : 355
NE ES Count : 2 FE ES Count : 241
Xdsl Reset Times : 0 Xdsl Link Times : 9
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 : 7 dB Far SNR Margin : 4 dB
CO ITU Version[0] : b5004946 CO ITU Version[1] : 544eb206
DSLAM CHIPSET VENDOR : < IFTN >
-
Does anyone know if there is any utility that can automatically or semi-automatically generate the tone graphs from the CLI info on these units?
Sorry, I'm not aware of anything. :no:
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Sorry, I'm not aware of anything. :no:
Thanks, if I get bored I'll think about making something...
-----
I rebooted a couple of days ago and lost the bump to 14xxxxxx, dropping back down to 12xxxxxx at 6dB.
Today I notice I'm still at 12xxxxxx but the attainable went up to 14xxxxxx and the Far SNR is up to 8dB.
vdsl status
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Running Mode : 17A State : SHOWTIME
DS Actual Rate : 79995000 bps US Actual Rate : 12306000 bps
DS Attainable Rate : 98754312 bps US Attainable Rate : 14678310 bps
DS Path Mode : Fast US Path Mode : Fast
DS Interleave Depth : 1 US Interleave Depth : 1
NE Current Attenuation : 9 dB Cur SNR Margin : 6 dB
DS actual PSD : -1.-7 dB US actual PSD : -1.-6 dB
NE CRC Count : 33 FE CRC Count : 419
NE ES Count : 30 FE ES Count : 304
Xdsl Reset Times : 0 Xdsl Link Times : 10
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 : 7 dB Far SNR Margin : 8 dB
CO ITU Version[0] : b5004946 CO ITU Version[1] : 544eb206
DSLAM CHIPSET VENDOR : < IFTN >
A DSL reboot beckons, and now I have the 14xxxxxx with 6dB far SNR:
vdsl status
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Running Mode : 17A State : SHOWTIME
DS Actual Rate : 79995000 bps US Actual Rate : 14583000 bps
DS Attainable Rate : 98681864 bps US Attainable Rate : 14665850 bps
DS Path Mode : Fast US Path Mode : Fast
DS Interleave Depth : 1 US Interleave Depth : 1
NE Current Attenuation : 9 dB Cur SNR Margin : 6 dB
DS actual PSD : -1.-7 dB US actual PSD : -1.-6 dB
NE CRC Count : 0 FE CRC Count : 419
NE ES Count : 0 FE ES Count : 304
Xdsl Reset Times : 0 Xdsl Link Times : 11
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 : 7 dB Far SNR Margin : 6 dB
CO ITU Version[0] : 00000000 CO ITU Version[1] : 00000000
DSLAM CHIPSET VENDOR : < unknown >
See how long it sticks for!
-
Something has very significantly improved on my line...
Today I was greeted in the modem by a claimed max upstream of 25meg and 14dB SNR.
vdsl status
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Running Mode : 17A State : SHOWTIME
DS Actual Rate : 79995000 bps US Actual Rate : 14355000 bps
DS Attainable Rate : 91586600 bps US Attainable Rate : 25592010 bps
DS Path Mode : Fast US Path Mode : Fast
DS Interleave Depth : 1 US Interleave Depth : 1
NE Current Attenuation : 10 dB Cur SNR Margin : 4 dB
DS actual PSD : -1.-4 dB US actual PSD : -1.-3 dB
NE CRC Count : 153 FE CRC Count : 1505
NE ES Count : 141 FE ES Count : 1287
Xdsl Reset Times : 0 Xdsl Link Times : 12
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 : 7 dB Far SNR Margin : 14 dB
CO ITU Version[0] : b5004946 CO ITU Version[1] : 544eb206
DSLAM CHIPSET VENDOR : < IFTN >
> vdsl status more
vdsl status more
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Near End Far End Note
Trellis : 1 1
Bitswap : 1 1
ReTxEnable : 0 0
VirtualNoise : 0 0
20BitSupport : 0 0
LatencyPath : 0 0
LOS : 2 0
LOF : 0 0
LPR : 0 0
LOM : 0 0
SosSuccess : 0 0
NCD : 0 0
LCD : 0 0
FECS : 2758 26313 (seconds)
ES : 141 1287 (seconds)
SES : 0 13 (seconds)
LOSS : 0 54 (seconds)
UAS : 40 397 (seconds)
HECError : 0 0
CRC : 153 1505
RsCorrection : 0 0
INP : 0 0 (symbols)
InterleaveDelay : 0 0 (1/100 ms)
NFEC : 255 255
RFEC : 16 16
LSYMB : 3850 21451
INTLVBLOCK : 255 255
AELEM : 0 ----
A swift modem reboot later and I'm at full whack:
vdsl status
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Running Mode : 17A State : SHOWTIME
DS Actual Rate : 79995000 bps US Actual Rate : 20000000 bps
DS Attainable Rate : 92278328 bps US Attainable Rate : 25681007 bps
DS Path Mode : Fast US Path Mode : Fast
DS Interleave Depth : 1 US Interleave Depth : 1
NE Current Attenuation : 10 dB Cur SNR Margin : 4 dB
DS actual PSD : -2.-9 dB US actual PSD : -2.-7 dB
NE CRC Count : 0 FE CRC Count : 1505
NE ES Count : 0 FE ES Count : 1287
Xdsl Reset Times : 0 Xdsl Link Times : 13
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 : 7 dB Far SNR Margin : 9 dB
CO ITU Version[0] : b5004946 CO ITU Version[1] : 544eb206
DSLAM CHIPSET VENDOR : < IFTN >
> vdsl status more
vdsl status more
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Near End Far End Note
Trellis : 1 1
Bitswap : 0 0
ReTxEnable : 0 0
VirtualNoise : 0 0
20BitSupport : 0 0
LatencyPath : 0 0
LOS : 2 0
LOF : 0 0
LPR : 0 0
LOM : 0 0
SosSuccess : 0 0
NCD : 0 0
LCD : 0 0
FECS : 0 26313 (seconds)
ES : 0 1287 (seconds)
SES : 0 13 (seconds)
LOSS : 0 61 (seconds)
UAS : 40 437 (seconds)
HECError : 0 0
CRC : 0 1505
RsCorrection : 0 0
INP : 0 0 (symbols)
InterleaveDelay : 0 0 (1/100 ms)
NFEC : 255 255
RFEC : 16 16
LSYMB : 5410 21451
INTLVBLOCK : 255 255
AELEM : 0 ----
Would love to know what improved...
-
I suspect you will have to file that under the heading of "one of life's little mysteries". :)
-
I guess so. Maybe something has dried out with the recent bit of warm weather.
Roll on FTTP! :)
-
But if the download SNRm @ 4dB which suggests 3dB SNRm profile got applied, why did the download attainable speed decrease from 98mbps @ 6dB to ~91-92mbps @ 4dB? it should increase, isn't it?
-
But if the download SNRm @ 4dB which suggests 3dB SNRm profile got applied, why did the download attainable speed decrease from 98mbps @ 6dB to ~91-92mbps @ 4dB? it should increase, isn't it?
From what I've seen, I don't think attainable can be trusted when below 6dB SNRm, it seems to go a bit crazy.
Like how my line is banded but it makes zero sense I would sync any higher if it wasn't, given my SNR.
Data Rate: 73.993 Mb/s / 20.000 Mb/s
Max. Attainable Data Rate (ATTNDR): 77.092 Mb/s / 23.673 Mb/s
Latency: 0.0 ms / 0.0 ms
Line Attenuation (LATN): 12.9 dB / 15.5 dB
Signal Attenuation (SATN): 12.9 dB / 15.4 dB
Noise Margin (SNR): 3.1 dB / 8.3 dB
Aggregate Transmit Power(ACTATP): 6.5 dB / 14.6 dB
-
Ah, I see that makes sense.. Thank you for explaining :thumbs:
-
I think the -~3dB down SNR margin may have been as a result of me fiddling with my modem parameters while I was trying to work out what was going on with the upstream; I'd set "vdsl snr -50" which I guess set a target margin of only 1dB (eek). I've backed it off to "vdsl snr -30" which is still over 85mbps.
If I have it set to 6dB with "vdsl snr 0" then it maxes out around 75mbps.