on 04-03-2022 20:24
I've been experiencing interruptions to service recently which is very unusual, everything is normally very stable. I have a SuperHub 3 in Modem Mode which has been reporting the following in its Network Log;
04/03/2022 20:12:5 | notice | LAN login Success; |
04/03/2022 18:03:8 | Warning! | RCS Partial Service; |
04/03/2022 18:00:56 | critical | SYNC Timing Synchronization failure - Loss of Sync; |
04/03/2022 17:52:52 | Warning! | RCS Partial Service; |
04/03/2022 17:45:52 | critical | No Ranging Response received - T3 time-out; |
04/03/2022 17:34:49 | Warning! | RCS Partial Service; |
04/03/2022 17:34:43 | critical | SYNC Timing Synchronization failure - Loss of Sync; |
04/03/2022 17:09:25 | Warning! | RCS Partial Service; |
04/03/2022 17:09:24 | critical | No Ranging Response received - T3 time-out; |
04/03/2022 17:09:23 | Warning! | RCS Partial Service; |
04/03/2022 17:08:54 | critical | No Ranging Response received - T3 time-out; |
04/03/2022 13:26:33 | Warning! | RCS Partial Service; |
04/03/2022 13:26:14 | critical | SYNC Timing Synchronization failure - Loss of Sync; |
04/03/2022 13:22:35 | Warning! | RCS Partial Service; |
04/03/2022 13:21:35 | critical | No Ranging Response received - T3 time-out; |
04/03/2022 13:04:20 | Warning! | RCS Partial Service; |
Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1 | 331000000 | 7.4 | 40 | 256 qam | 25 |
2 | 235000000 | 7.9 | 40 | 256 qam | 13 |
3 | 243000000 | 7.5 | 40 | 256 qam | 14 |
4 | 251000000 | 7.5 | 40 | 256 qam | 15 |
5 | 259000000 | 7.5 | 40 | 256 qam | 16 |
6 | 267000000 | 7.5 | 40 | 256 qam | 17 |
7 | 275000000 | 7.4 | 40 | 256 qam | 18 |
8 | 283000000 | 7.5 | 40 | 256 qam | 19 |
9 | 291000000 | 7.4 | 40 | 256 qam | 20 |
10 | 299000000 | 7.5 | 40 | 256 qam | 21 |
11 | 307000000 | 7.5 | 40 | 256 qam | 22 |
12 | 315000000 | 7.6 | 40 | 256 qam | 23 |
13 | 323000000 | 7.5 | 40 | 256 qam | 24 |
14 | 339000000 | 7 | 40 | 256 qam | 26 |
15 | 347000000 | 6.6 | 40 | 256 qam | 27 |
16 | 355000000 | 6.4 | 40 | 256 qam | 28 |
17 | 363000000 | 6 | 40 | 256 qam | 29 |
18 | 371000000 | 6 | 40 | 256 qam | 30 |
19 | 379000000 | 5.9 | 40 | 256 qam | 31 |
20 | 387000000 | 5.6 | 40 | 256 qam | 32 |
21 | 395000000 | 5.5 | 40 | 256 qam | 33 |
22 | 403000000 | 5.4 | 40 | 256 qam | 34 |
23 | 411000000 | 5.1 | 40 | 256 qam | 35 |
24 | 419000000 | 5 | 40 | 256 qam | 36 |
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 | 39400000 | 44.5 | 5120 | 64 qam | 4 |
2 | 46200000 | 44.5 | 5120 | 64 qam | 3 |
3 | 53700000 | 34.3 | 5120 | 64 qam | 2 |
4 | 60300000 | 33.3 | 5120 | 64 qam | 1 |
I'm kind of at a loss as to what I can do about this and the huge reduction in speed that I'm seeing. Does anyone have any ideas?
on 05-03-2022 10:17
Looks like an upstream problem, possible noise on the circuit.?
You need to post the Downstream Pre and PostRS errors. Also setup a BQM here www.thinkbroadband.com/ping
Once done we can comment on the stats.
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on 05-03-2022 10:25
on 06-03-2022 13:31
Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1 | Locked | 40.3 | 9626 | 4978 |
2 | Locked | 40.3 | 30410 | 5433 |
3 | Locked | 40.9 | 28051 | 5473 |
4 | Locked | 40.3 | 26599 | 5545 |
5 | Locked | 40.9 | 24964 | 5591 |
6 | Locked | 40.3 | 24192 | 5858 |
7 | Locked | 40.3 | 23048 | 6150 |
8 | Locked | 40.9 | 20147 | 5490 |
9 | Locked | 40.9 | 17723 | 5371 |
10 | Locked | 40.9 | 15035 | 5804 |
11 | Locked | 40.3 | 12592 | 5030 |
12 | Locked | 40.9 | 11154 | 4976 |
13 | Locked | 40.3 | 10304 | 4966 |
14 | Locked | 40.9 | 9814 | 4281 |
15 | Locked | 40.9 | 9583 | 4679 |
16 | Locked | 40.3 | 9443 | 4074 |
17 | Locked | 40.3 | 9637 | 4572 |
18 | Locked | 40.3 | 9004 | 4390 |
19 | Locked | 40.9 | 8782 | 4254 |
20 | Locked | 40.9 | 8106 | 4221 |
21 | Locked | 40.3 | 7259 | 4360 |
22 | Locked | 40.3 | 6765 | 4498 |
23 | Locked | 40.3 | 5808 | 4366 |
24 | Locked | 40.9 | 5366 | 4589 |
I'm guessing that the dropped packets reported is to do with the router though...
on 06-03-2022 14:19
You have to many Post|RS errors and generally this is indicative of noise on the circuit. Ideally they should be zero.
A VM technician will need to find the problem and fix it. Wait here a day or two for a VM Mod to pick this up.
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on 06-03-2022 21:21
The forum doesn't seem to want to let me embed this in any way so hopefully this link works. The connection has been dreadful tonight, the full thing has been dropping off regularly.
on 09-03-2022 09:32
Hey @sadsmileyface,
Welcome back to the community and thanks for taking the time to post your issue on the forums.
I'm sorry to hear of the issues that you're having with your connection at the moment, I have looked into this and can see that there is an issue with the SNR levels on your connection, this would need a technician visit to resolve.
I can arrange the appointment from here but would need to confirm a few details via a private message, that I will drop over in a moment.
Please look out for the private message and we can get started.
Regards,
Steven_L
on 09-03-2022 10:21
Thanks for confirming your details via private message @sadsmileyface.
I have arranged for the appointment and you can track your engineer appointments online. Simply sign in to My Virgin Media and you’ll see your appointments on your account dashboard.
Regards,
Steven_L