2 weeks ago
I've been a customer since the Telewest/Blueyonder days and this is the first time I've had such a bad run of connectivity. I think my Hub 4 may be failing. I have checked all connections to my kit internally. I have the Hub 4 in router mode feeding an Asus RT-AX89X which in turn connects to a the rest of my internal network via an 10Gbit SFP+ connection to a Mikrotik CRS328-24P-4S+. When a disconnection occurs, I have tested running a speed test on my Asus router (being the nearest item connected to the hub) and it times out and won't work until the hub reconnects, leading me to believe the Hub 4 is the culprit of the issues as the postcode-based checker claims there are no issues in my area (ME10 4UT).
I have seen the convention is to set up a BQM, so here's the last 24hrs on the one I set up yesterday:
Does this in any way look normal or point to the Hub 4 being the likely culprit?
2 weeks ago - last edited 2 weeks ago
The hub likely is not faulty just a bad line
2 weeks ago
In your opinion, should I be requesting and engineer visit in that case?
2 weeks ago
@daveboulden wrote:In your opinion, should I be requesting and engineer visit in that case?
Definitley.
2 weeks ago
I have the Hub 4 in router mode feeding an Asus RT-AX89X
Why router mode?
2 weeks ago - last edited 2 weeks ago
First of all, you are not alone or going mad! I have been having the same issues since July and I too found out about these monitors, so I setup a quality monitor, and here are a few examples of when it goes wonky...
and it could be like this for hours, up to days (I think the record is 5 days on the trot) when it happens.
I have had four (maybe 5) engineers out and they have, over their visits, replace every connector and cable between the box on the wall outside and up to the router, which was a new hub5 installed at the beggining of august. I have (apparantly) had the network people look at the connection and everything is in tolerance as is the case when the engineers called. But the issue with that is, by the time the engineers came, the issue had resolved itself so there was no issue to look at. That being said, the engineers showed me their version of this monitoring (called samknows) which showed a huge number of disconnects over the times that I have been having these issues.
All of the engineers were stumped and could see the samknows disconnections but at the time of their visit, no issues on their monitoring devices as everything was within spec, and all went away scratching their heads. I believe if (I hope its an if, not a when) it happens again that they are going to do a repull on the cable between the house and the green unti/box at the end of the street. A couple of the engineers told me that there was a house in a near street that was reporting the same as us too.
Touch wood, I havent had one for the last two weeks-ish .. but I am not sure if its been resolved or waiting to bite me in the bum when I relax over it.
2 weeks ago - last edited 2 weeks ago
> Why router mode?
My mistake, I meant modem mode.
2 weeks ago
If your post your upstream/downstream network stats, maybe we can deduce the problem. The BQM suggests an upstream issue, imo. @daveboulden
2 weeks ago
Here's the network stats:
Cable Modem Status | ||
Item | Status | Comments |
Cable Modem Status | Online | DOCSIS 3.1 |
Primary downstream channel | Locked | SC-QAM |
Channel Overview | Downstream | Upstream |
DOCSIS 3.0 channels | 31 | 5 |
DOCSIS 3.1 channels | 1 | 1 |
3.0 Downstream channels | |||||
Channel | Frequency (Hz) | Power (dBmV) | SNR (dB) | Modulation | Channel ID |
25 | 331000000 | 8.1 | 40.4 | QAM256 | 25 |
3 | 155000000 | 8.6 | 40.4 | QAM256 | 3 |
4 | 163000000 | 8.2 | 40.4 | QAM256 | 4 |
5 | 171000000 | 7.8 | 40.4 | QAM256 | 5 |
6 | 179000000 | 7.6 | 40.9 | QAM256 | 6 |
7 | 187000000 | 7.4 | 40.9 | QAM256 | 7 |
8 | 195000000 | 7.3 | 40.9 | QAM256 | 8 |
9 | 203000000 | 7 | 40.4 | QAM256 | 9 |
10 | 211000000 | 7 | 40.4 | QAM256 | 10 |
11 | 219000000 | 6.9 | 40.4 | QAM256 | 11 |
12 | 227000000 | 7.2 | 40.4 | QAM256 | 12 |
13 | 235000000 | 7 | 40.4 | QAM256 | 13 |
14 | 243000000 | 7.4 | 40.4 | QAM256 | 14 |
15 | 251000000 | 7.3 | 40.4 | QAM256 | 15 |
16 | 259000000 | 7.3 | 40.9 | QAM256 | 16 |
17 | 267000000 | 7.8 | 40.4 | QAM256 | 17 |
18 | 275000000 | 7.8 | 40.9 | QAM256 | 18 |
19 | 283000000 | 8.2 | 40.4 | QAM256 | 19 |
20 | 291000000 | 8 | 40.4 | QAM256 | 20 |
21 | 299000000 | 8.4 | 40.9 | QAM256 | 21 |
22 | 307000000 | 8.4 | 40.4 | QAM256 | 22 |
23 | 315000000 | 8.1 | 40.9 | QAM256 | 23 |
24 | 323000000 | 7.9 | 40.9 | QAM256 | 24 |
26 | 339000000 | 8.1 | 40.9 | QAM256 | 26 |
27 | 347000000 | 8.1 | 40.9 | QAM256 | 27 |
28 | 355000000 | 7.9 | 40.4 | QAM256 | 28 |
29 | 363000000 | 7.9 | 40.9 | QAM256 | 29 |
30 | 371000000 | 7.6 | 40.4 | QAM256 | 30 |
31 | 379000000 | 7.9 | 40.4 | QAM256 | 31 |
32 | 387000000 | 7.6 | 40.4 | QAM256 | 32 |
33 | 395000000 | 8 | 40.4 | QAM256 | 33 |
3.0 Downstream channels | ||||
Channel | Lock Status | RxMER (dB) | Pre RS Errors | Post RS Errors |
25 | Locked | 40.366287 | 0 | 0 |
3 | Locked | 40.366287 | 0 | 0 |
4 | Locked | 40.366287 | 0 | 0 |
5 | Locked | 40.366287 | 0 | 0 |
6 | Locked | 40.946209 | 0 | 0 |
7 | Locked | 40.946209 | 0 | 0 |
8 | Locked | 40.946209 | 0 | 0 |
9 | Locked | 40.366287 | 0 | 0 |
10 | Locked | 40.366287 | 0 | 0 |
11 | Locked | 40.366287 | 0 | 0 |
12 | Locked | 40.366287 | 0 | 0 |
13 | Locked | 40.366287 | 0 | 0 |
14 | Locked | 40.366287 | 0 | 0 |
15 | Locked | 40.366287 | 0 | 0 |
16 | Locked | 40.946209 | 0 | 0 |
17 | Locked | 40.366287 | 0 | 0 |
18 | Locked | 40.946209 | 0 | 0 |
19 | Locked | 40.366287 | 0 | 0 |
20 | Locked | 40.366287 | 0 | 0 |
21 | Locked | 40.946209 | 0 | 0 |
22 | Locked | 40.366287 | 0 | 0 |
23 | Locked | 40.946209 | 0 | 0 |
24 | Locked | 40.946209 | 0 | 0 |
26 | Locked | 40.946209 | 0 | 0 |
27 | Locked | 40.946209 | 0 | 0 |
28 | Locked | 40.366287 | 0 | 0 |
29 | Locked | 40.946209 | 0 | 0 |
30 | Locked | 40.366287 | 0 | 0 |
31 | Locked | 40.366287 | 0 | 0 |
32 | Locked | 40.366287 | 0 | 0 |
33 | Locked | 40.366287 | 0 | 0 |
2 weeks ago
Just awaiting the upstream stats.