Slow Speed since last night / this morning

[#1]

I got a call about the escalation this morning. To their credit, BT realised the profile was out of sync with the sync speed and fixed it (Our side was right all along). So now, it's just a matter of playing with the throughput to see if the original issue has been resolved.

[#2]

Hey
Yep, plusnet portal still showing 7.15Mbps, Althought BTw diagnostic speed test still errors.
The router was showing as connected but I had no connectivity at all, so I gave it a reboot.
I believe Chris was due an update from the 20CN capacity management team regarding the exchange.
Daniel

[#3]

Hey
Just an update on this.
All weekend speeds on the new VP were top notch 6.6x mb/s was fantastic.
Last night speeds had slowed down to 6.00mb/s over the peak period, not that I am complaining but I just hope it isn't a sign of things to come!
I did notice that the SNR margin on my DS had gone from 13.x to 14.x.
BQM is still a bit messy but loads better than it was.
I will post my router stats etc when I am back home.
Thanks again
Daniel

[#4]

Spoke too soon......
Further diagnostics on the BTw speed test still not working.


Router stats

Current line speed:
7.15 Mb
BQM snapshot

I know its not as bad as it was but the drop off from over the weekend and Monday is quite something.
Daniel

[#5]

@CRT,
Any news on the CVLAN rebalancing?  Is CVLAN congestion still thought to be the cause of the horrible TBB BQMs and slow data speed or are we looking for something else?  Is CLT still good post the TPM problems?
Does the continued failure of the BT Further Diagnostics test have any material bearing on the general operation of the service?
@Daniel,
Just confirming - are those speed tests over a wired or wifi connection?
Kevin

[#6]

Do CVLANs even exist for ADSL?!

[#7]

Hmmm I might have the wrong terminology 
Happy to learn the correct terminology...

[#8]

I was looking for a flow chart as I'm sure one exists showing everything.
For FTTC/P, the CVLAN is the connection from either the FTTP modem or the FTTC DSLAM to the layer 2 switch in the exchange - this is Openreach's responsibility.
For 21CN ADSL/FTTC/FTTP, the SVLAN is the connection from the layer 2 switch to the BRAS/MSE - this is BT Wholesale's responsibility.
With 20CN, the SVLAN is known as the VP.

[#9]

Cheers AndyH,
This is one of the things I love about this community forum - an opportunity for us to all learn and share knowledge, without the fear of being flamed for making a mistake or two along the journey.
Thank you,
Kevin

[#10]

No worries
There is somewhere a really good document that explains/shows how quite a few things work. It's lengthy, but the flow charts are really useful to understand the different networks and components.

[#11]

Hey Kevin
Yep through a wired connection.
Speed was back down to 3.2mb/s when I checked last night.

Daniel

[#12]

@CRT,
These speed tests are highly variable (as we know these beasts can be) and the BQM "mess" seems to extend from 13:30 to 02:00 which is somewhat outside of the time-slots one would expect for pure VP congestion.  Could there be some other factor at play here?
Is there anything which can be done to fix Daniel's BTw Diagnostic Test failures so that he can speed test and PlusNet can see the trends?
Kevin

[#13]

I've been looking into this one in detail, and unless I'm missing something obvious, there isn't much else that I can think of. The case is in the hands of BTw now, but we do need a full BT speed test so we can ask their teams to investigate further.

[#14]

Quote from: StingA

When I do the futher diagnostic test it errors, it has done this as long as I can remember.

Hi Tony,
Good to see an update from you on this one.  When you say "Full BT Speed Test" do you mean the further diagnostics bit... which is not working on this line?
Kevin

[#15]

Yes I did - thanks for the above, which I obviously hasn't seen.