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Speed issues and strange speedtest results..

FIXED
melindwr
Dabbler
Posts: 14
Thanks: 1
Registered: 27-03-2018

Speed issues and strange speedtest results..

Had a problem. PN reset my profile, during training my Archer D5 reported SNRM of 2.14billion (?).  Binned the router. Now on a Billion (router).  Line is stable. but speeds are much lower than they were before.  Checked the btw test for my profile and many times got similar results. I'm on ADSL Max, these can't be right!  I must have run the test a hundred times over two months and it always gives the error message.

 

 1. Best Effort Test: 
Download Speed : 14.84 Mbps

2. Upstream Test: 
Upload Speed : 0.53 Mbps

Your speed test has completed and the results are shown above, however during the test an error occurred while trying to retrieve additional details regarding your service. As a result we are unable to determine if the speed you received during the test is acceptable for your service. Please re-run the test if you require this additional information.

Router Stats.

adsl info --stats

adsl: ADSL driver and PHY status

Status: Showtime

Last Retrain Reason: 1

Last initialization procedure status: 0

Max: Upstream rate = 940 Kbps, Downstream rate = 8620 Kbps

Bearer: 0, Upstream rate = 752 Kbps, Downstream rate = 4543 Kbps

 

Link Power State: L0

Mode: ADSL2+ Annex A

TPS-TC: ATM Mode(0x0)

Trellis: U:OFF /D:ON

Line Status: No Defect

Training Status: Showtime

Down Up

SNR (dB): 9.5 7.9

Attn(dB): 44.5 23.4

Pwr(dBm): 20.6 12.2

 

ADSL2 framing

Bearer 0

MSGc: 57 34

B: 26 23

M: 1 4

T: 4 2

R: 16 6

S: 0.1884 4.0000

L: 1826 204

D: 160 2

 

Counters

Bearer 0

SF: 7732705 394450

SFErr: 10 113

RS: 1948641385 1580778

RSCorr: 84093 119

RSUnCorr: 316 0

 

Bearer 0

HEC: 55 72

OCD: 2 0

LCD: 2 0

Total Cells: 983512244 162765585

Data Cells: 55713252 6379120

Drop Cells: 0

Bit Errors: 0 8223

 

ES: 21 123

SES: 11 9

UAS: 37 26

AS: 91776

 

 

10 REPLIES
Plusnet Help Team
Plusnet Help Team
Posts: 13,484
Thanks: 246
Fixes: 68
Registered: 27-04-2007

Re: Speed issues and strange speedtest results..

Agreed, that's really odd and considerably above the capabilities of ADSL Max, do you see the same on any other speed test sites?

If this post resolved your issue please click the 'This fixed my problem' button
 Adam Walker
 Plusnet Help Team
melindwr
Dabbler
Posts: 14
Thanks: 1
Registered: 27-03-2018

Re: Speed issues and strange speedtest results..

No. Other speed tests are consistent with router stats IE download at 3.6 to 3.8 Mbps.  I am certainly not getting that speed.  I also notice that if I reboot my router I sync at exactly the same rate each time 4543Mb even if I lower the the SNRM on my Billion router.

richi
Aspiring Pro
Posts: 112
Thanks: 63
Fixes: 2
Registered: 17-11-2017

Re: Speed issues and strange speedtest results..

Fix

@melindwr wrote:

Mode: ADSL2+ Annex A

 


You're not on Max, @melindwr.

I guess your 20CN exchange was upgraded recently and your line was silently reprovisioned. Openreach has an ongoing programme of upgrading the vast majority of rural exchanges to 21CN (mine was done last year, which is why I've returned to Plusnet from the LLU world).

Browni
Aspiring Hero
Posts: 2,280
Thanks: 775
Fixes: 45
Registered: 02-03-2016

Re: Speed issues and strange speedtest results..

It's also worth bearing in mind the BT speedtest is broken in some browsers.

Example thread

I must have been really bad in a previous life as this was my 3rd ISP in a row that used lithium.
Now you're stuck with me because my new ISP doesn't run a forum Cheesy
melindwr
Dabbler
Posts: 14
Thanks: 1
Registered: 27-03-2018

Re: Speed issues and strange speedtest results..

Thanks for the responses guys.

If I the exchange has been upgraded, I need to force G.dmt as my sync has fallen by 2 Mbs!  I believe I am still on ADSL Max as a neighbour has had an engineer out who told him we are on IPstream.  I think the Billion router selects the appropriate  modulation if ADSL 2+ is specified and doesn't report the actual modulation used.  I definitely think the btw speedtest is at fault here.

 I am more concerned with the error "Your speed test has completed and the results are shown above, however during the test an error occurred while trying to retrieve additional details regarding your service. As a result we are unable to determine if the speed you received during the test is acceptable for your service. Please re-run the test if you require this additional information." as I cannot register the results.

Problem is my speed is too high for plusnet to regard it as a fault but much lower than I was getting before..

Community Veteran
Posts: 5,164
Thanks: 478
Fixes: 20
Registered: 10-06-2010

Re: Speed issues and strange speedtest results..

You are definitely on ADSL2+, and your speed has clearly been banded by the DLM. Plusnet could reset it (again) to remove the banding, although the DLM would likely band it again if whatever caused the banding in the first place is still present.

melindwr
Dabbler
Posts: 14
Thanks: 1
Registered: 27-03-2018

Re: Speed issues and strange speedtest results..

Thanks ejs.  I guess I'll have to take you word for it.  Both Samknows and Plusnet Exchange status tell me the exchange is not 21CN enabled.  However it looks like my router resynced @6.6Mbs last night Smiley

 Screenshot from 2018-03-31 18-04-05.png

Community Veteran
Posts: 5,164
Thanks: 478
Fixes: 20
Registered: 10-06-2010

Re: Speed issues and strange speedtest results..

Then both those websites are out of date.

Check https://www.btwholesale.com/includes/adsl/adsl.htm

melindwr
Dabbler
Posts: 14
Thanks: 1
Registered: 27-03-2018

Re: Speed issues and strange speedtest results..

Indeed you are correct sir! @ & richi  Thank you both for your help.

richi
Aspiring Pro
Posts: 112
Thanks: 63
Fixes: 2
Registered: 17-11-2017

Re: Speed issues and strange speedtest results..

No worries. The eponymous Sam seems to have stopped knowing things several years ago. The site still talks about Market 1/2, for pity's sake.