Frequent disconnections are back again!

[#1]

Every now and again I suffer lots of short disconnections. These usually result in a steady decrease in speed when the connection resumes. For example, recently:

************************************** 20251013 **************************************
1:
2025-10-13 18:52:55 [5] System: DSL Link Down
2025-10-13 18:52:58 [6] PPP: Connect time 14007.8 minutes.
2025-10-13 18:52:58 [6] PPP: Sent 1159561768 bytes, received 1367131992 bytes.
2025-10-13 18:53:04 [5] PPP: Connection terminated.
2025-10-13 18:53:20 [5] System: DSL Link Up us/ds 0/47979 kbps Type 64/65B PTM Annex B
2:
2025-10-13 19:22:28 [5] System: DSL Link Down
2025-10-13 19:22:32 [6] PPP: Connect time 28.3 minutes.
2025-10-13 19:22:32 [6] PPP: Sent 721177 bytes, received 2749270 bytes.
2025-10-13 19:22:38 [5] PPP: Connection terminated.
2025-10-13 19:22:53 [5] System: DSL Link Up us/ds 0/44112 kbps Type 64/65B PTM Annex B
************************************** 20251015 **************************************
2025-10-15 02:21:33 [5] System: DSL Link Down
2025-10-15 02:21:35 [6] PPP: Connect time 1857.7 minutes.
2025-10-15 02:21:35 [6] PPP: Sent 121714307 bytes, received 1230125116 bytes.
2025-10-15 02:21:41 [5] PPP: Connection terminated.
2025-10-15 02:21:59 [5] System: DSL Link Up us/ds 0/43654 kbps Type 64/65B PTM Annex B
************************************** 20251016 **************************************
2025-10-16 02:10:04 [5] System: DSL Link Down
2025-10-16 02:10:08 [6] PPP: Connect time 1427.3 minutes.
2025-10-16 02:10:08 [6] PPP: Sent 96505853 bytes, received 3095237669 bytes.
2025-10-16 02:10:14 [5] PPP: Connection terminated.
2025-10-16 02:10:29 [5] System: DSL Link Up us/ds 0/42162 kbps Type 64/65B PTM Annex B
************************************** 20251017 **************************************
1:
2025-10-17 01:13:43 [5] System: DSL Link Down
2025-10-17 01:13:47 [6] PPP: Connect time 1382.4 minutes.
2025-10-17 01:13:47 [6] PPP: Sent 193843577 bytes, received 2870707313 bytes.
2025-10-17 01:13:53 [5] PPP: Connection terminated.
2025-10-17 01:14:08 [5] System: DSL Link Up us/ds 0/41968 kbps Type 64/65B PTM Annex B
2:
2025-10-17 05:24:13 [5] System: DSL Link Down
2025-10-17 05:24:17 [6] PPP: Connect time 249.2 minutes.
2025-10-17 05:24:17 [6] PPP: Sent 4335644 bytes, received 3950462 bytes.
2025-10-17 05:24:23 [5] PPP: Connection terminated.
2025-10-17 05:24:38 [5] System: DSL Link Up us/ds 0/42449 kbps Type 64/65B PTM Annex B
*****************************************************************************************

This may be quite trivial but over weeks it steadily reduces the speed, and causes disconnection of the sites I host in my office at home. I should add that sometimes there are no disconnections - the longest period being 44 days. Nevertheless these random disconnections surely shouldn't happen.

If a PlusNet engineer reads this forum, could someone have a look at this issue by any chance?

Many thanks,

Kenneth.

[#2]

Moderator's note:
Thread moved from Everything Else to Broadband

[#3]

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@kaspencer wrote:

Every now and again I suffer lots of short disconnections. These usually result in a steady decrease in speed when the connection resumes. For example, recently:

2025-10-13 18:53:20 [5] System: DSL Link Up us/ds 0/47979 kbps Type 64/65B PTM Annex B


2025-10-13 19:22:53 [5] System: DSL Link Up us/ds 0/44112 kbps Type 64/65B PTM Annex B

2025-10-15 02:21:59 [5] System: DSL Link Up us/ds 0/43654 kbps Type 64/65B PTM Annex B

2025-10-16 02:10:29 [5] System: DSL Link Up us/ds 0/42162 kbps Type 64/65B PTM Annex B

2025-10-17 01:14:08 [5] System: DSL Link Up us/ds 0/41968 kbps Type 64/65B PTM Annex B

2025-10-17 05:24:38 [5] System: DSL Link Up us/ds 0/42449 kbps Type 64/65B PTM Annex B

If a PlusNet engineer reads this forum, could someone have a look at this issue by any chance?

Many thanks,

Kenneth.

---

On each of these disconnects you have no upstream value. I would at this stage do test socket connection for a week if you can and see if that either resolves or doesn't resolve it. If the up stream value is 0 like in a day or so from the test, go thru the faults system 

[#4]

@krusty  The zero upstream must be a router reporting bug it can't be real. The broadband wouldn't work at all with no upstream link. Every data packet received downstream has to be acknowledged by sending a response.

Have a look at ACK and NAK as used in networks.

[#5]

---

@RealAleMadrid wrote:

@krusty  The zero upstream must be a router reporting bug it can't be real. The broadband wouldn't work at all with no upstream link. Every data packet received downstream has to be acknowledged by sending a response.

Have a look at ACK and NAK as used in networks.

---

for clarity i've not played with the PN hubs to know if it is a bug.

But that said

It may well be a bug, the hg612 had a weird fec error counter bug which never gave the correct results. Also remember xDSL is dynamic so you could be happly wizzing at 1mbits/s upstream and something kills it to 0 bits/s i've seen that happen on a hg612 and it was a line fault. And yes regardless of direction theres always acknowlege data the other direction.

Regardless of it being a software bug, test socket and then a potential faults route is the way to go.

[#6]

@krusty The OP is having short disconnections implying that most of the time the broadband is working so there must be an upstream connection.

I may be wrong but I don't think the stats shown are from any Plusnet router

I agree that testing and raising a fault are required.

[#7]

Those indeed are not Hub2 stats- the include more useful information, notably the US speed and the SNRM for DS & US.

Random disconnections have their typical causes in iffy joints / bad weather / RFI (SHINE and REIN).  Bad joints (etc) make lines more susceptible to picking up SHINE & REIN.

The right course of action here is to run the faults bot and see what it finds.  Thereafter if this router supports router stats (see the link below) then install that and run it 24/7 watching for what happens at the time of the disconnections.

[#8]

@krusty @RealAleMadrid @Townman 

Thanks for the comments.

1.

I accept that the upstream speed is missing- I imagine that this is because when the router starts up and connectis, it doesn't generate any data for the upstream to be measured. However the router appears to work completely acceptably, and can, connectivity permitting, remain connected for well over a month. Of course @krusty could also be right in that the missing upstream values it could be a feature of the router.
However, when I look now (as the router has settled down and has experienced upstream and downstream traffic) the upstream figure is reported to be 9550 which is as good as I'm likely to get.

2. @Townman 

Yes your'e right - it's not a PlusNet router, it's a TP-Link (I forget it's model). I couldn't use the PlusNet router which I was sent most recently because my LAN (I date from 2003 with PlusNet) doesn't use a 192.168  LAN range and I've too many devices on it to feel like changing everything. The router I was sent had a fixed IP range. I was told that PN doesn't issue any other router these days.

Anyway all that unfortunately doesn't change the disconnection; as I have had the problem before I always suspect it depends upon which BT engineers are on duty overnight - the issue goes quiet for a couple of months and then happens again, sometimes up to 5 times a night.

I'd like PlusNet to pick this up seriously for me bit there never seems to be any interest.

Thanks all ...

Kenneth

[#9]

To get Plusnet to pick this up, you need to engage in the diagnostic process.  Run the faults bot to start the procedures.