BT VDSL Connection Speed and Reliability Issues

Hi,

Bit of context I run a Vigor 130 and a pfSense box on a BT Business Ultrafast FTTC connection, should be achieving 72/20 which is what we used to see

Rather loosing my mind at the moment trying to sort an issue with my network, all started about 3 weeks ago we started having intermittent WAN connection dropouts, these caused some odd behaviour on my router (pfSense Box) so I put it down to the router being a little old and swapped out all the hardware for fresh stuff I had. That didnt fix the issue.

The dropouts would last a few minutes and then the would normally recover and would re-sync, sometimes this would not happen and I would either have to restart the Vigor or restart the WAN (PPPoE) interface on the pfSense box.

Gradually we noticed the sync speed dropped from 80 to around 60 over the course of a few days aswell.

We called BT, they did the whole use the HomeHub on the test socket so we can do our tests and they concluded the line wasnt functioning correctly, so sent out an engineer, he came out the next day and concluded it did work correctly by the issue was with the 4 other DSL ports in the house, so we chose to disconnect them and leave only one additional port connected up to my office so that the potentially faulty wiring on the other ports no longer had any effect on the connection. From this the issue looked to be resolved, for all of 2 days, then the same issue started happening again, random drop out and a daily drop in sync speeds. I have tried to check everything, reinstalled pfSense with a full fresh configured install, no luck. Swapped the Vigor out for an Openreach ECI modem, no luck. Swapped the modem out AGAIN for the BuisnessHub in bridge mode, again no luck.

At the moment I have the Vigor plugged into the test socket with ALL other DSL ports disconnected from it, issue still persists.

Here is a screenshot of the VDSL stats from the Vigor and the speedtests from the last 7 days https://imgur.com/a/u8uODrr

Does this seem right? I am at a loss right now as to whats wrong.

Thanks
Spencer

The DLM (dynamic line management) has applied a cap (called banding) on your line.
This effectively caps the line, at 60Mb/s sync downstream in your case. This shows as 59,999 on your modem.

No matter what you do it will not sync above this figure. It requires the ISP to perform a DLM reset.
The engineer who visited should have done this.

Edited by j0hn83 (Mon 23-May-22 21:11:24)

Have you checked for noise on the phone line|?
I have a similar issue, intermittent crackly noise started on my line a week ago causing the broadband to drop. Sensing the 'use the BT hub' issue I duly replaced my Billion 8800NL R2 with the home hub. First attempt with BT, despite stressing it was a line noise issue, they logged the fault as a broadband one and sent a broadband engineer who do nothing other than plugging his laptop into the hub, when it found no history data as it had only been running for a couple of days, did a quiet line test which was quiet and declared everything working, signing off the job saying 'I had said the fault had been cured'! After a lengthy messenger chat the other day I have the second chap coming this morning, of course everything is working fine this morning.

In my case the Open Reach engineer, after testing the line, quickly found a fault on the cable on the wall of my house, replaced it with new and even a new filtered front plate. Even though the line was clear of noise at the time. When you have the right engineer they are marvelous but it is pot luck who you get.