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Standard User adslmax
(knowledge is power) Mon 31-Jul-17 21:34:46
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Big Jump in Attainable Rate


[link to this post]
 
I have noticed there is a big jump in attainable rate.

Before:

Downstream Upstream
Line Coding (Trellis) On On
SNR Margin (dB) 6.1 12.9
Attenuation (dB) 11.7 0.0
Output Power (dBm) 12.5 0.0
Attainable Rate (Kbps) 81523 27708
Rate (Kbps) 80000 20000

Now:

Downstream Upstream
Line Coding (Trellis) On On
SNR Margin (dB) 15.4 21.2
Attenuation (dB) 10.3 0.0
Output Power (dBm) 12.5 0.0
Attainable Rate (Kbps) 119523 37916
Rate (Kbps) 80000 20000
Standard User Banger
(eat-sleep-adslguide) Mon 31-Jul-17 21:51:24
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Re: Big Jump in Attainable Rate


[re: adslmax] [link to this post]
 
A crosstalker switched off?

Tim
www.uno.net.uk & freenetname
Asus DSL-N55U and ZyXEL VMG1312-B10A Bridge on 80 Meg LLU Fibre
http://www.thinkbroadband.com/speedtest/results.html...

Current Sync: 71334/17938
Standard User lee111s
(fountain of knowledge) Mon 31-Jul-17 21:55:05
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Re: Big Jump in Attainable Rate


[re: Banger] [link to this post]
 
Doubt a single crosstalker would see a 40meg fluctuation!


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Standard User MHC
(sensei) Mon 31-Jul-17 22:23:10
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Re: Big Jump in Attainable Rate


[re: lee111s] [link to this post]
 
Not impossible though .... I have one close to me and the difference is 16-18 Mbps.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

M H C


taurus excreta cerebrum vincit
Standard User lee111s
(fountain of knowledge) Mon 31-Jul-17 22:24:33
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Re: Big Jump in Attainable Rate


[re: MHC] [link to this post]
 
That's less than half the rate we're on about. Yeah it could be a couple of crosstalkers but unlikely they'd be off at the same time.
Standard User adslmax
(knowledge is power) Mon 31-Jul-17 23:32:59
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Re: Big Jump in Attainable Rate


[re: lee111s] [link to this post]
 
Latest after resync:

Downstream Upstream
Line Coding (Trellis) On On
SNR Margin (dB) 9.4 16.9
Attenuation (dB) 11.7 0.0
Output Power (dBm) 12.5 0.0
Attainable Rate (Kbps) 93323 30720
Rate (Kbps) 80000 20000
Standard User Banger
(eat-sleep-adslguide) Mon 31-Jul-17 23:44:09
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Re: Big Jump in Attainable Rate


[re: adslmax] [link to this post]
 
Dropped a fair bit although it is night time so more Radio interference.

Tim
www.uno.net.uk & freenetname
Asus DSL-N55U and ZyXEL VMG1312-B10A Bridge on 80 Meg LLU Fibre
http://www.thinkbroadband.com/speedtest/results.html...

Current Sync: 71334/17938
Standard User jdigz7
(learned) Tue 01-Aug-17 04:01:36
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Re: Big Jump in Attainable Rate


[re: adslmax] [link to this post]
 
Resync from 87 to this

Maximum data rate:
19999 / 120488

dsl:VDSL link Up: Down Rate=120488Kbps, Up Rate=19999Kbps, SNR Margin Down=0.00dB, SNR Margin Up=6.00dB
Standard User Chrysalis
(legend) Tue 01-Aug-17 08:12:13
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Re: Big Jump in Attainable Rate


[re: jdigz7] [link to this post]
 
check vectoring status smile

Sky Fibre Pro BQM - IPv4 BQM - IPv6
Standard User MHC
(sensei) Tue 01-Aug-17 08:22:12
Print Post

Re: Big Jump in Attainable Rate


[re: adslmax] [link to this post]
 
Something odd happening with your attenuation, 11.7 to 10.3 to 11.7 ...


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

M H C


taurus excreta cerebrum vincit
Standard User Zarjaz
(eat-sleep-adslguide) Tue 01-Aug-17 10:47:21
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Re: Big Jump in Attainable Rate


[re: MHC] [link to this post]
 
Either Max's house moved a little closer, then back again .....

or there was some brief oddness with the DSLAM.

(got me money on the second option)

Standard User PhilipD
(experienced) Tue 01-Aug-17 12:16:47
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Re: Big Jump in Attainable Rate


[re: Zarjaz] [link to this post]
 
Hi

Attenuation reported by modems/routers isn't the same attenuation BT use, the modem uses an average over a range of received frequencies so can vary in the reporting.

The difference could be vectoring if you have that now (some BDUK funded cabs get it), or one or more cross-talkers have gone, don't forget we are in peak holiday season now, so that isn't as unlikely as it sounds where people go away and turn everything off. You'll know in a couple of weeks!

There could be a fault at the cab where a line card has gone and dozens of people have dropped their connection, reducing cross-talk considerably.

Has the power tx/rtx power levels changed? The modems might have decided to up the power levels for some reason, making your signal louder against the noise so you get a higher signal to noise ratio.

Regards

Phil
Standard User adslmax
(knowledge is power) Tue 01-Aug-17 12:20:54
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Re: Big Jump in Attainable Rate


[re: PhilipD] [link to this post]
 
I have kept an eyes on my router stats and here is latest one: (these stats show more errored second on the upstream totally of 635 ES frown

Downstream Upstream
Line Coding (Trellis) On On
SNR Margin (dB) 9.4 16.9
Attenuation (dB) 11.7 0.0
Output Power (dBm) 12.5 0.0
Attainable Rate (Kbps) 93354 30839
Rate (Kbps) 80000 20000

_____________________________________________________

B (# of bytes in Mux Data Frame) 203 237
M (# of Mux Data Frames in an RS codeword) 1 1
T (# of Mux Data Frames in an OH sub-frame) 0 42
R (# of redundancy bytes in the RS codeword) 10 16
S (# of data symbols over which the RS code word spans) 0.0809 0.3781
L (# of bits transmitted in each data symbol) 21153 5374
D (interleaver depth) 8 1
I (interleaver block size in bytes) 214 127
N (RS codeword size) 214 254
Delay (msec) 0 0
INP (DMT symbol) 49.00 0.00
OH Frames 0 0
OH Frame Errors 0 753
RS Words 1744948392 3632931
RS Correctable Errors 27910 4987
RS Uncorrectable Errors 0 0
HEC Errors 0 0
OCD Errors 0 0
LCD Errors 0 0
Total Cells 621110806 0
Data Cells 1530577689 0
Bit Errors 0 0
Total ES 0 635
Total SES 0 0
Total UAS 28 28

Edited by adslmax (Tue 01-Aug-17 12:24:41)

Standard User adslmax
(knowledge is power) Tue 01-Aug-17 12:25:47
Print Post

Re: Big Jump in Attainable Rate


[re: MHC] [link to this post]
 
In reply to a post by MHC:
Something odd happening with your attenuation, 11.7 to 10.3 to 11.7 ...


Maybe it a bug with router or DSLAM?
Standard User adslmax
(knowledge is power) Tue 01-Aug-17 12:26:37
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Re: Big Jump in Attainable Rate


[re: Chrysalis] [link to this post]
 
In reply to a post by Chrysalis:
check vectoring status smile


How to check that on my billion 8800NL stats?
Standard User mlmclaren
(knowledge is power) Tue 01-Aug-17 13:32:25
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Re: Big Jump in Attainable Rate


[re: adslmax] [link to this post]
 
I'm thinking a noise issue nearby, maybe some local construction or major fault in the area....

Keep monitoring, unless it has a large impact on connection I wouldn't worry to much.

Best Regards,
Matt.
"I don't take too kindly to coaxial pushed rubbish... or to them damned Intel Puma wastes of plastic."
Standard User Banger
(eat-sleep-adslguide) Tue 01-Aug-17 18:46:18
Print Post

Re: Big Jump in Attainable Rate


[re: adslmax] [link to this post]
 
In reply to a post by adslmax:
In reply to a post by Chrysalis:
check vectoring status smile


How to check that on my billion 8800NL stats?


adsl info --vectoring

Tim
www.uno.net.uk & freenetname
Asus DSL-N55U and ZyXEL VMG1312-B10A Bridge on 80 Meg LLU Fibre
http://www.thinkbroadband.com/speedtest/results.html...

Current Sync: 71334/17938
Standard User lee111s
(fountain of knowledge) Tue 01-Aug-17 18:55:31
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Re: Big Jump in Attainable Rate


[re: adslmax] [link to this post]
 
Seems another user on Kitz had a jump in their max attianable and it looks as though vectoring has been enabled on their cabinet.
Standard User Chrysalis
(legend) Tue 01-Aug-17 18:57:18
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Re: Big Jump in Attainable Rate


[re: lee111s] [link to this post]
 
yep and someone has beat me here to the command so lets see what max reports.

ECI people gonna go mental if hauwei now also got vectoring.

Sky Fibre Pro BQM - IPv4 BQM - IPv6
Standard User lee111s
(fountain of knowledge) Tue 01-Aug-17 19:06:24
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Re: Big Jump in Attainable Rate


[re: Chrysalis] [link to this post]
 
Some selected BDUK Huawei cabs have vectoring enabled to meet some "superfast" targets to further away premises. It's likely related, or, Openreach are doing some wider, unheard of testing.

Edited by lee111s (Tue 01-Aug-17 19:07:17)

Standard User adslmax
(knowledge is power) Tue 01-Aug-17 19:17:54
Print Post

Re: Big Jump in Attainable Rate


[re: lee111s] [link to this post]
 
Downstream Upstream
Line Coding (Trellis) On On
SNR Margin (dB) 12.1 19.6
Attenuation (dB) 11.7 0.0
Output Power (dBm) 12.5 0.0
Attainable Rate (Kbps) 112614 36126
Rate (Kbps) 80000 20000
Standard User adrenalize_
(newbie) Tue 01-Aug-17 22:21:36
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Re: Big Jump in Attainable Rate


[re: adslmax] [link to this post]
 
I too have had a jump in sync speed in the past week or so.

A couple of weeks ago I went on holiday for a week and turned off the router - I had several hundred hours of solid sync at 63Mbps.

Since returning just over a week ago and turning on the modem I've had about 4 retrains initiated by the remote end - presumably DLM. The first slightly improved sync speed but also enabled G.INP on my upstream (previously only downstream), and the others just increased sync speed and I'm now up to 73Mbps

Vectoring state is 5 (unconfigured) still - so it's not that.

I'm guessing as mentioned it's down to a few people on holiday and reduced crosstalk - will see what happens in a few weeks or the end of the school holiday - but guessing I'l loose the 10Mbps again.

Last year I was still in a contract for 40Mbps having just moved so didn't see any change of course, but prior to that at the last house (longer line about 37Mbps) I never noticed any seasonal change!
Standard User RobertoS
(elder) Tue 01-Aug-17 23:49:00
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Re: Big Jump in Attainable Rate


[re: Chrysalis] [link to this post]
 
In reply to a post by Chrysalis:
yep and someone has beat me here to the command so lets see what max reports.

ECI people gonna go mental if hauwei now also got vectoring.
I just did the vectoring check, using bt that given and also xdslctl info --vectoring

Both gave:
Vectoring state: 5
VCE MAC Address: 0:0:0:0:0:0
Total error samples Ethernet pkts sent: 0
Total error samples Ethernet pkts discarded: 0
Total error samples statuses sent: 0
Total error samples statuses discarded: 0

I assume the packet counts mean it isn't enabled.
Ah - just checked on kitz, towards the bottom of this post. It lists the codes.

My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. Sync 71288/12440Kbps @ 600m. BQMs - IPv4 & IPv6
Standard User toe
(learned) Wed 02-Aug-17 00:20:04
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Re: Big Jump in Attainable Rate


[re: RobertoS] [link to this post]
 
Here you go , Vectoring enabled 00.30 1/8/17

adsl info --vectoring
adsl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 1
Last initialization procedure status: 0
Max: Upstream rate = 9002 Kbps, Downstream rate = 66907 Kbps
Bearer: 0, Upstream rate = 9002 Kbps, Downstream rate = 54997 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Vectoring state: 1
VCE MAC Address: 0:10:fc:20:0:0
Total error samples Ethernet pkts sent: 149778
Total error samples Ethernet pkts discarded: 0
Total error samples statuses sent: 74889
Total error samples statuses discarded: 0
>

Xup
Standard User Banger
(eat-sleep-adslguide) Wed 02-Aug-17 00:35:18
Print Post

Re: Big Jump in Attainable Rate


[re: toe] [link to this post]
 
Bah humbug that is nice. I have asked Openreach on twitter if it is being rolled out but they are going to get back to me.

Tim
www.uno.net.uk & freenetname
Asus DSL-N55U and ZyXEL VMG1312-B10A Bridge on 80 Meg LLU Fibre
http://www.thinkbroadband.com/speedtest/results.html...

Current Sync: 71334/17938
Standard User j0hn83
(committed) Wed 02-Aug-17 00:58:24
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Re: Big Jump in Attainable Rate


[re: Banger] [link to this post]
 
It's not. It's only on some BDUK funded Huawei cabinets. They use part of the funding on the vectoring equipment to bring properties above the (usually) 24mb target. It's only viable in certain areas, usually where a number of properties are a good distance from the cabinet.

It's not the 1st time we've seen vectoring on a cabinet and it won't be the last. A few years ago there was lots of talk about OpenReach rolling out vectoring on a large scale. That ship has sailed now though.
It's also not something that can practically be rolled out to ECI cabinets either. It would just make the difference between the 2 cabinet vendors even greater.
Standard User Banger
(eat-sleep-adslguide) Wed 02-Aug-17 01:10:42
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Re: Big Jump in Attainable Rate


[re: j0hn83] [link to this post]
 
Thanks, John, I am on a Digital Durham Cabinet which is Huawei but I am getting 71 down after a cable replacement. Wonder if I will see it?

Tim
www.uno.net.uk & freenetname
Asus DSL-N55U and ZyXEL VMG1312-B10A Bridge on 80 Meg LLU Fibre
http://www.thinkbroadband.com/speedtest/results.html...

Current Sync: 71334/17938
Standard User j0hn83
(committed) Wed 02-Aug-17 01:17:14
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Re: Big Jump in Attainable Rate


[re: Banger] [link to this post]
 
Not if most are getting your speeds. If crosstalk drops a large number of users below Digital Durhams target then vectoring may be considered. Sometimes it's installed when the cabinet is 1st provisioned, and sometimes quite a bit later. There's no real info on when it is/isn't deployed. We've just noticed the pattern that it's only ever BDUK funded projects that have vectoring, and statements from individual organisations (like Digital Durham) explaining why they've deployed vectoring (to meet properties passed targets).
Standard User Banger
(eat-sleep-adslguide) Wed 02-Aug-17 02:06:32
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Re: Big Jump in Attainable Rate


[re: j0hn83] [link to this post]
 
I can only see 1 TBB speed test on my estate connected to Sky getting 25 down but only done 1 test. I am pretty sure there are others connected to the cabinet but just maybe not testing on TBB.

Tim
www.uno.net.uk & freenetname
Asus DSL-N55U and ZyXEL VMG1312-B10A Bridge on 80 Meg LLU Fibre
http://www.thinkbroadband.com/speedtest/results.html...

Current Sync: 71334/17938
Standard User adslmax
(knowledge is power) Wed 02-Aug-17 12:01:26
Print Post

Re: Big Jump in Attainable Rate


[re: toe] [link to this post]
 
adsl info --vectoring
adsl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 5
Last initialization procedure status: 0
Max: Upstream rate = 37376 Kbps, Downstream rate = 114851 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 80000 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Vectoring state: 2

_________________________________________________________________


SNR Margin (dB) 13.6 20.9
Attenuation (dB) 10.6 0.0
Output Power (dBm) 12.4 0.0

_________________________________________________________________

ChipSet Vendor Id: BDCM:0xa48c
ChipSet VersionNumber: 0xa48c
Standard User lee111s
(fountain of knowledge) Wed 02-Aug-17 12:08:54
Print Post

Re: Big Jump in Attainable Rate


[re: adslmax] [link to this post]
 
Vectoring states:

0 = VECT_WAIT_FOR_CONFIG
1 = VECT_FULL
2 = VECT_WAIT_FOR_TRIGGER
3 = VECT_RUNNING
4 = VECT_DISABLED
5 = VECT_UNCONFIGURE
Standard User adslmax
(knowledge is power) Wed 02-Aug-17 12:11:18
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Re: Big Jump in Attainable Rate


[re: lee111s] [link to this post]
 
I did ask plusnet for the line test GEA test to see if Vectoring is enabled or not? Plusnet cannot tell me if it was on or not. They not aware of any vectoring trial test from openreach?

But they notice my line was all the over the place but there is no sign of DLM trigger which it rather odd.

Edited by adslmax (Wed 02-Aug-17 12:13:06)

Standard User adslmax
(knowledge is power) Wed 02-Aug-17 12:34:57
Print Post

Re: Big Jump in Attainable Rate


[re: lee111s] [link to this post]
 
Saw openreach engineer is working on my green cabinet and he told me he just putting a new card in and testing. I asked him about vectoring and g.fast. He say my cabinet is on trial of vectoring ongoing process but DLM will not affect in this trial stage. As for g.fast there is no timeframe slot for the time being.

My router has resync again:

adsl info --vectoring
adsl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 6
Last initialization procedure status: 0
Max: Upstream rate = 30843 Kbps, Downstream rate = 93285 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 79999 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Vectoring state: 5
VCE MAC Address: 0:0:0:0:0:0
Total error samples Ethernet pkts sent: 0
Total error samples Ethernet pkts discarded: 0
Total error samples statuses sent: 0
Total error samples statuses discarded: 0

_____________________________________________________________________


SNR Margin (dB) 9.4 17.0
Attenuation (dB) 11.7 0.1
Output Power (dBm) 12.5 0.0
D (interleaver depth) 8 1
Standard User Chrysalis
(legend) Wed 02-Aug-17 12:35:01
Print Post

Re: Big Jump in Attainable Rate


[re: adslmax] [link to this post]
 
I have never seen 2 before, usually its set to 5, but 2 indicates from the description its not quite active either.

Thanks for running the command.

Sky Fibre Pro BQM - IPv4 BQM - IPv6
Standard User adslmax
(knowledge is power) Wed 02-Aug-17 12:38:55
Print Post

Re: Big Jump in Attainable Rate


[re: Chrysalis] [link to this post]
 
It's appear openreach trialing vectoring in most places but there is nothing on ispreview or thinkbroadband about this. Nothing on BT press release news.

All I can see so far that BT trialing:

new g.fast pod installing

vectoring test

SNR 3dB trial

g.INP on ECI cabinet trial

Edited by adslmax (Wed 02-Aug-17 12:39:19)

Standard User adslmax
(knowledge is power) Wed 02-Aug-17 12:46:04
Print Post

Re: Big Jump in Attainable Rate


[re: adslmax] [link to this post]
 
I just noticed that very odd on downstream Errored Second was still zero but upstream Errored Second was very badly soaring to 778 so far after 6th resync. I think upstream is still on fast path while downstream still on interleaved (8)

I will keep monitoring it and updated if any change.
Standard User lee111s
(fountain of knowledge) Wed 02-Aug-17 12:54:00
Print Post

Re: Big Jump in Attainable Rate


[re: adslmax] [link to this post]
 
Vectoring stats 5, and the mac address being all 0's imeans vectoring isn't currently active.
Standard User adslmax
(knowledge is power) Thu 03-Aug-17 15:53:02
Print Post

Re: Big Jump in Attainable Rate


[re: lee111s] [link to this post]
 
latest as of now:

adsl info --vectoring
adsl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 30632 Kbps, Downstream rate = 93069 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 80000 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Vectoring state: 5
VCE MAC Address: 0:0:0:0:0:0
Total error samples Ethernet pkts sent: 0
Total error samples Ethernet pkts discarded: 0
Total error samples statuses sent: 0
Total error samples statuses discarded: 0
>
Standard User jdigz7
(learned) Mon 07-Aug-17 10:25:14
Print Post

Re: Big Jump in Attainable Rate


[re: adslmax] [link to this post]
 
No access to stats as using BT Smart Hub Currently rather than a HG612 but since a manual reboot its still showing...


dsl:VDSL link Up: Down Rate=120488Kbps, Up Rate=19999Kbps, SNR Margin Down=0.00dB, SNR Margin Up=6.00dB

big improvement from the 87 attain it was before.
Standard User adslmax
(knowledge is power) Mon 07-Aug-17 11:13:42
Print Post

Re: Big Jump in Attainable Rate


[re: jdigz7] [link to this post]
 
SNR 0.0dB (no way on FTTC)
Standard User lee111s
(fountain of knowledge) Mon 07-Aug-17 11:23:28
Print Post

Re: Big Jump in Attainable Rate


[re: adslmax] [link to this post]
 
Reporting error.
Standard User Zarjaz
(eat-sleep-adslguide) Tue 08-Aug-17 11:57:32
Print Post

Re: Big Jump in Attainable Rate


[re: jdigz7] [link to this post]
 
No access to stats as using BT Smart Hub Currently

GUI technical logs provides a bit ?

Product name:
BT Hub 6A
Serial number:
***********************
Firmware version:
SG4B1000B316
Firmware updated:
30-Jul-2017
Board version:
1.0
Gui version:
1.64.0
DSL uptime:
8 Days, 13 Hours 23 Minutes 54 Seconds
Data rate:
20.00 Mbps / 80.00 Mbps
Maximum data rate:
36033 / 106336
Noise margin:
15.7 dB / 12.6 dB
Line attenuation:
9.3 dB
Signal attenuation:
VPI / VCI:
0/38
Modulation:
G_993_2_ANNEX_B
Latency type:
Fast Path

Standard User jdigz7
(regular) Thu 17-Aug-17 09:04:54
Print Post

Re: Big Jump in Attainable Rate


[re: Zarjaz] [link to this post]
 
Product name:
BT Hub 6A
Serial number:
+084316+NQ70388446
Firmware version:
SG4B1000B316
Firmware updated:
07-Aug-2017
Board version:
1.0
Gui version:
1.64.0
DSL uptime:
1 Days, 14 Hours 31 Minutes 2 Seconds
Data rate:
20.00 Mbps / 80.00 Mbps
Maximum data rate:
36972 / 122357
Noise margin:
23.8 dB / 18.6 dB
Line attenuation:
13.7 dB


Take from that what you will.
Standard User jdigz7
(regular) Thu 17-Aug-17 09:09:41
Print Post

Re: Big Jump in Attainable Rate


[re: jdigz7] [link to this post]
 
My Broadband Speed Test
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