Path Mode Interleave

[#1]

Hi,

For sometime now, I have been getting speeds below 60Mbps where it was over 70Mbps.

I got myself a Draytek 2860n and configured it in bridge mode. The stats are showing the Path Mode as Inerleave

Can someone at Plusnet please remove this mode?

Thanks in advance.

[#2]

PlusNet have no control of Interleave and other parameters on VDSL2 circuits, everything is controlled by the Openreach automatic DLM system. Your reduced speed could be caused by crosstalk which is interference from other lines as more people switch to VDSL2, also you do not have re-transmission (G.Inp) enabled which could increase your speed but that is also not under PlusNet's control and is not supported by one of the cabinet types (ECI) used by Openreach. 

So basically there is nothing you can do about it.

[#3]

Sorry to hear you're having speed issues.

Unfortunately it's correct that we can't switch off interleaving for you.

We have a very limit set of tools when it comes to modifying or fibre circuits. 

However your connection is extremely intermittent so there seems to be a fault somewhere. Our tests aren't finding the cause of the drops though, so I'd recommend trying the steps Here including a different modem/router if you can.

If you continue to experience issues please report a fault to us at http://fault.plus.net giving us a nudge over here when you've completed it.

[#4]

Thanks for all the help.

I think these disconnects are the result of the Draytek 2860n which I have replaced with the original BT ECI modem.

I read somewhere here there is a new trial which allows ISP to send request for a DSLAM reset. If this is true, can you please request one?

Thanks.

[#5]

No worries.

I'm afraid we can only request a remote DLM reset if your line is banded which it isn't: "Profile Name: 0.128M-80M Downstream, Interleaving Low - 0.128M-20M Upstream, Error Protection Off"

[#6]

@Gandalf
Thanks for the information. Do you know how long it takes DSLAM to 'review' the connection?

[#7]

Unfortunately there's no set timeframe.

If you want to know more about fibre DLM I'd have a read of: https://community.plus.net/t5/Library/FTTC-DLM-What-it-is-How-it-works/ba-p/1322799

[#8]

Thanks for the link. I will just wait and see what happens.

[#9]

@Gandalf
Any chance of posting a GEA test of my line please? Thanks.

[#10]

Hi @akashi here's the GEA:

Test Outcome	Pass
Test Outcome Code	GTC_FTTC_SERVICE_0000
Description	GEA service test completed and no fault found .
Main Fault Location	OK
Sync Status	In Sync
Downstream Speed	67.6 Mbps
Upstream Speed	20.0 Mbps
Appointment Required	N
Fault Report Advised	N
NTE Power Status	PowerOn
Voice Line Test Result	Pass
Bridge Tap	Not Detected
Radio Frequency Ingress	Not Detected
Repetitive Electrical Impulse Noise	Not Detected
Cross Talk	Not Detected
Estimated Line Length In Metres	463.2
Upstream Rate Assessment	Very Good
Downstream Rate Assessment	Reasonable
Interference Pattern	Regular Interference Observed Daily
Service Impact	No Impact Observed
Interference Duration Longest Occurrence	From 23:00 to 23:45
Interference Location	Customer Premise
Home Wiring Problem	Not Detected
Downstream Policing Discard Rate	0.0
Customer Traffic Level	Upstream and Downstream Traffic Detected
Technology	VDSL
Profile Name	0.128M-80M Downstream, Interleaving Low - 0.128M-20M Upstream, Error Protection Off
Time Stamp	2018-10-11T12:30:00

Parameters	MIN	MAX	AVG
Down Stream Line Rate	65.5 Mbps	67.5 Mbps	66.9 Mbps
Up Stream Line Rate	20.0 Mbps	20.0 Mbps	20.0 Mbps
Up Time	0.0 Sec	900.0 Sec	893.5 Sec
Retrains	0.0	4.0	0.0

[#11]

Many thanks @LaurenBI

I am concerned with the "Regular Interference Observed Daily" on the GEA test result.

I am hoping this is showing because I was setting up my new modem last  Friday which required multiple reboots.

Since last Friday, I have connected the BT OR modem and haven't touched it since.

[#12]

@akashi,

To be completely honest I wouldn't particularly worry too much about that section. It picks up based upon errors and retrains over a 14 day period, and if there are any it will always show a marker there (although the wording changes every so slightly).

As you can see directly below that it also says "no service impact" so it's likely that the odd drops have caused that. 

[#13]

After waiting 4 weeks, the IP profile did not increase and I checked every week.

I decided to do a WAN reconnect on my router and noticed the IP profile increased to 72.46Mbps

However, my achievable speed seems to be capped at around 67Mbps through speed tests.

Last year I was on the 3db profile and was getting actual speed of around 74Mbps. Is it possible to go back on this?

Can you please provide another GEA report?

Thanks.

[#14]

Hi @akashi 

As you can see fro this GEA - your sync speed is 74.9 

Test OutcomePass

Test Outcome CodeGTC_FTTC_SERVICE_0000

DescriptionGEA service test completed and no fault found .

Main Fault LocationOK

Sync StatusIn Sync

Downstream Speed74.9 Mbps

Upstream Speed20.0 Mbps

Appointment RequiredN

Fault Report AdvisedN

NTE Power StatusPowerOn

Voice Line Test ResultPass

Bridge TapNot Detected

Repetitive Electrical Impulse NoiseNot Detected

Estimated Line Length In Metres468.0

Upstream Rate AssessmentVery Good

Downstream Rate AssessmentGood

Interference PatternNot Detected

Service ImpactNo Impact Observed

Home Wiring ProblemNot Detected

Downstream Policing Discard Rate0.0

Customer Traffic LevelUpstream and Downstream Traffic Detected

TechnologyVDSL

Profile Name0.128M-80M Downstream, Error Protection Off - 0.128M-20M Upstream, Error Protection Off

I hope this helps in some way. 

Thanks,

MoR

[#15]

Thank you for posting the GEA result @MasterOfReality

I am happy to see interleaving has been removed from my line.

Any ideas why I am not able to reach speeds above 67Mbps with this connection? All tests I am doing is via ethernet connection and with a setup which has reached 74Mbps before.

Thanks.