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The demon returns.

Devonian
Grafter
Posts: 1,854
Registered: 01-05-2011

The demon returns.

Please have a look at closed question 68323036

My broadband has started disconnecting again, also the SNR has jumped from being set to 3down 6up, to 9down 12.7up.
  Type Interleave Path
  Status Show Time
  Downstream Upstream
  Data Rate (kbps) 13143 527
  Noise Margin (dB) 9.0 12.7
  Attenuation (dB) 26.7 13.9
  Output power(dbm) 20.4 10.1

My line was syncing at 17895meg, noe it's dropped to the above.
Bt speedtest results:

FAQ
Results Image not loaded

1. Best Effort Test:  -provides background information.
Download  Speed
10.48 Mbps

0 Mbps 21 Mbps
Max Achievable Speed
Download speedachieved during the test was - 10.48 Mbps
For your connection, the acceptable range of speeds is 4 Mbps-21 Mbps.
IP Profile for your line is - 13.58 Mbps
2. Upstream Test:  -provides background information.
Upload Speed
0.42 Mbps

0 Mbps 0.83 Mbps
Max Achievable Speed
Upload speed achieved during the test was - 0.42Mbps
Additional Information:
Upstream Rate IP profile on your line is - 0.83 Mbps


I tried the broadband trouble shooter, but it says error please try later.
Unfortunately Chris Pettitt has moved on so I can't contact him as per the usual way.
10 REPLIES
Plusnet Alumni (retired) orbrey
Plusnet Alumni (retired)
Posts: 10,540
Registered: 18-07-2007

Re: The demon returns.

Hi Devonian,
A fault ticket has been passed through, it looks like there was an error with the automated testing which is why you saw what you did (that and the fact that a ticket has already been raised).
Your latest connections on our side are showing as 10 days and 2 days:
<img src="http://community.plus.net/visualradius/generated/image13758885061879.png"/>
Likewise according to BTs profile records your sync rate hasn't been over 17000 since the start of July. The target downstream SNR is also currently at 3 (sorry I say currently for all of these things, the latest update we're seeing on BTs side is from yesterday).
That ping isn't looking healthy though, I guess disconnecting then resyncing the router makes no difference?
Either way as I said there's a fault sat with our team so they'll get back to you soon.
Devonian
Grafter
Posts: 1,854
Registered: 01-05-2011

Re: The demon returns.

Thanks for the quick reply Matt.
Regards the connection, what I meant was the PPPoE was dropping, but the router was remaining in sync.
The reason I haven't mentioned about the drop in sync recently, is because it was only a few weeks ago a BTOR was playing with the line, so it had been on DLM testing.
The past couple of weeks it has been sat at just over 15meg.
I was typing away in a bit of a rush, I should have explained a bit more.

My concern is that the jitter and latency issues have returned again, causing the old issues with voip and video buffering.
Also there is obviously some kind of fault/issue that has caused the DLM to over ride the manual set SNR.
Plusnet Alumni (retired) orbrey
Plusnet Alumni (retired)
Posts: 10,540
Registered: 18-07-2007

Re: The demon returns.


xDSL Status Check
xDSL Status Test Summary 
Sync Status: Circuit In Sync 
General Information 
NTE Power Status: PowerOn
 
Upstream DSL Link Information  Downstream DSL Link Information 
Loop Loss:  13.8  26.6 
SNR Margin:  12.5  8.6 
Errored Seconds:  0  0 
HEC Errors:  0 
Cell Count:  725782  8492137 
Speed:  527  13142
 
Maximum Stable Rate (KBPS):  15904 
Fault Threshold Rate (KBPS):  12723 
Mean Time Between Retrains (Seconds):  86400 
Mean Time Between Errors Upstream (Seconds):  2385 
Indicative Line Quality:  A 
Mean Time Between Errors Downstream (Seconds):  28 

28 seconds between errors as per the above would seem to be fine, though given what you're seeing I'm not at all sure what's going wrong. I'll do what I can to chase this but think it'd be best left to the faults team as far as diagnostics goes.
JamesM
Grafter
Posts: 1,103
Registered: 24-06-2009

Re: The demon returns.

Sorry to butt in Devonian, but which Belkin router have you got ?, and are you using it with PPPoE. I have a F7D1401 v1 and I use PPPoA. I am just wondering if I should try PPPoE.
Devonian
Grafter
Posts: 1,854
Registered: 01-05-2011

Re: The demon returns.

Hi Matt, thanks for getting back to me.
It would appear that whatever the fault has been over the past 6 months, instead of being fixed like we thought, the fault just disappeared like it has done before.
I have had around 9 BTOR visits the past few months, and all agree there is underlying problem, but they just can't track it down.
My line is perfect when the fault isn't there... it is rock solid.
But when the fault is present, the broadband is pretty much unusable.
Generally, the fault affects the Upload, and the line becomes incredibly jittery, with latency shooting of the scale.
The problem is, the fault comes, hangs around for a few hours, or even days, then vanishes.
The past BTOR visit resulted in a new pair, so I have had a new line right to the router now, the last thing is a lift and shift, but BTOR are flat out refusing to do it.
After the new pair was added, the line has been great, that is why myself and Chris Pettitt, both thought the problem was solved, until yesterday!

Like I said, the SNR is manually set to 3down and 6up, but that jumped yesterday.
Earlier this afternoon, my router rebooted, I'm not sure if that was PN testing the line?  It may have been yourself?
But the SNR has dropped back to how it should be, and the line has synced much better, although today the fault has disappeared again.
Type Interleave Path
  Status Show Time
  Downstream Upstream
  Data Rate (kbps) 16164 1240
  Noise Margin (dB) 3.0 6.3
  Attenuation (dB) 26.6 13.9
  Output power(dbm) 20.3 12.7



Although the downstream through put is a little slow.
I always test wired etc by the way.
Devonian
Grafter
Posts: 1,854
Registered: 01-05-2011

Re: The demon returns.

Quote from: JamesM
Sorry to butt in Devonian, but which Belkin router have you got ?, and are you using it with PPPoE. I have a F7D1401 v1 and I use PPPoA. I am just wondering if I should try PPPoE.

I have got the N750 James.
http://www.belkin.com/uk/p/P-F9K1103
Devonian
Grafter
Posts: 1,854
Registered: 01-05-2011

Re: The demon returns.

I guess I spoke to early.
1. Best Effort Test:  -provides background information.
Download  Speed
1.59 Mbps

0 Mbps 21 Mbps
Max Achievable Speed
Download speedachieved during the test was - 1.59 Mbps
For your connection, the acceptable range of speeds is 4 Mbps-21 Mbps.
IP Profile for your line is - 14.26 Mbps
2. Upstream Test:  -provides background information.
Upload Speed
1 Mbps

0 Mbps 0.83 Mbps
Max Achievable Speed
Upload speed achieved during the test was - 1Mbps
Additional Information:
Upstream Rate IP profile on your line is - 0.83 Mbps
Devonian
Grafter
Posts: 1,854
Registered: 01-05-2011

Re: The demon returns.

And the TAP 3 test:
1. Best Effort Test:  -provides background information.
Download  Speed
0.54 Mbps

0 Mbps 21 Mbps
Max Achievable Speed
Download speedachieved during the test was - 0.54 Mbps
For your connection, the acceptable range of speeds is 4 Mbps-21 Mbps.
IP Profile for your line is - 14.26 Mbps
2. Upstream Test:  -provides background information.
Upload Speed
0.01 Mbps

0 Mbps 0.83 Mbps
Max Achievable Speed
Upload speed achieved during the test was - 0.01Mbps
Additional Information:
Upstream Rate IP profile on your line is - 0.83 Mbps

Your service was found to be performing poorly.
Please raise a fault with your service provider, stating that the BT Performance Tester tool indicates poor service throughput performance after the third test.
Plusnet Staff
Plusnet Staff
Posts: 6,346
Thanks: 31
Fixes: 5
Registered: 26-11-2011

Re: The demon returns.

Hi Devonian,
I'm sorry to see that you're still having issues here, I really thought we'd cracked it too! Hopefully your ticket will get picked up ASAP, in the meantime, I wouldn't run any further BT Speedtests as we have evidence on the TAP3 Test to suggest that the connection running at a very poor level.
Fingers crossed for you and hope that you manage to get this issue sorted out.
Chris Pettitt
Cloud Environments Engineer
Devonian
Grafter
Posts: 1,854
Registered: 01-05-2011

Re: The demon returns.

Thank you. Chris.