on 19-08-2021 13:49
Hi,
I work with another from home during the day in the week and we have consistently over many months and weeks suffered dropouts what seems like every day. It is very disruptive with our virtual desktops over VPN and the conference calls - i.e. we have to frequently re-login with passwords and security tokens etc.
Before we leave VM and go with another supplier. I would like to ask the good volunteers here and the official VM staff if there is anything that VM can do before we leave?
I will follow up with BQM graphs and CM stats. Thanks in advance!
Background
Following similar issues in April / May and since the beginning of this year, an engineer came out in June and inspected my set-up. He also checked the position in the local cabinet and fitted an attenuator to the Hub to drop the signal levels. Another remote engineer told me some failing equipment further upstream in the network had also been replaced. Overall there is not much improvement from my end.
Our setup:
My laptop connection:
Other's laptop connection:
on 19-08-2021 13:54
Forgot to say, after calling 150 was advised Hub needed reboot..
Following reboot around 12:35
Network Log
Time | Priority | Description |
19/08/2021 11:31:52 | Warning! | RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 11:28:30 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 11:10:16 | Warning! | RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 11:10:16 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 10:10:54 | Warning! | RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 10:10:54 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 03:55:13 | Warning! | RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 03:55:13 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 03:55:11 | Warning! | RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 03:55:11 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 03:55:11 | Warning! | RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 02:50:37 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 02:44:2 | Warning! | RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 02:44:2 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 01:32:21 | Warning! | RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 01:31:53 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 01:29:40 | Warning! | RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 01:29:40 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 01:26:36 | Warning! | RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
19/08/2021 01:26:36 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=yy:yy:yy:yy:yy:yy;CM-QOS=1.1;CM-VER=3.0; |
on 19-08-2021 13:54
Downstream bonded channels
Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1 | 202750000 | 6.5 | 38 | 256 qam | 9 |
2 | 210750000 | 6.6 | 38 | 256 qam | 10 |
3 | 218750000 | 6.3 | 38 | 256 qam | 11 |
4 | 226750000 | 6.3 | 38 | 256 qam | 12 |
5 | 234750000 | 5.8 | 38 | 256 qam | 13 |
6 | 242750000 | 5.6 | 38 | 256 qam | 14 |
7 | 250750000 | 5.3 | 38 | 256 qam | 15 |
8 | 258750000 | 5.3 | 38 | 256 qam | 16 |
9 | 266750000 | 5.1 | 38 | 256 qam | 17 |
10 | 274750000 | 5.3 | 38 | 256 qam | 18 |
11 | 282750000 | 5.5 | 38 | 256 qam | 19 |
12 | 290750000 | 6 | 38 | 256 qam | 20 |
13 | 298750000 | 6.4 | 38 | 256 qam | 21 |
14 | 306750000 | 6.5 | 38 | 256 qam | 22 |
15 | 314750000 | 6.3 | 38 | 256 qam | 23 |
16 | 322750000 | 5.9 | 38 | 256 qam | 24 |
17 | 330750000 | 5.6 | 38 | 256 qam | 25 |
18 | 338750000 | 5.6 | 38 | 256 qam | 26 |
19 | 346750000 | 5.6 | 38 | 256 qam | 27 |
20 | 354750000 | 5.5 | 38 | 256 qam | 28 |
21 | 362750000 | 5.5 | 38 | 256 qam | 29 |
22 | 370750000 | 5.5 | 38 | 256 qam | 30 |
23 | 378750000 | 5.3 | 38 | 256 qam | 31 |
24 | 386750000 | 5 | 38 | 256 qam | 32 |
Downstream bonded channels
Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1 | Locked | 38.6 | 149 | 45 |
2 | Locked | 38.6 | 141 | 47 |
3 | Locked | 38.9 | 140 | 38 |
4 | Locked | 38.6 | 133 | 44 |
5 | Locked | 38.9 | 128 | 40 |
6 | Locked | 38.6 | 126 | 32 |
7 | Locked | 38.9 | 122 | 34 |
8 | Locked | 38.6 | 119 | 32 |
9 | Locked | 38.6 | 116 | 30 |
10 | Locked | 38.6 | 107 | 39 |
11 | Locked | 38.9 | 103 | 32 |
12 | Locked | 38.9 | 108 | 31 |
13 | Locked | 38.6 | 109 | 30 |
14 | Locked | 38.6 | 105 | 29 |
15 | Locked | 38.9 | 95 | 30 |
16 | Locked | 38.9 | 100 | 28 |
17 | Locked | 38.9 | 88 | 29 |
18 | Locked | 38.9 | 102 | 29 |
19 | Locked | 38.6 | 94 | 30 |
20 | Locked | 38.9 | 113 | 28 |
21 | Locked | 38.6 | 107 | 28 |
22 | Locked | 38.9 | 87 | 29 |
23 | Locked | 38.6 | 88 | 29 |
24 | Locked | 38.6 | 96 | 28 |
on 19-08-2021 13:57
this morning the T3 timeouts were on every band around 5-9 prior to Hub reboot.
1 | 39400000 | 37.8 | 5120 | 64 qam | 6 |
2 | 46200000 | 37.8 | 5120 | 64 qam | 5 |
3 | 25800000 | 37.5 | 5120 | 64 qam | 8 |
4 | 32600000 | 37.5 | 5120 | 64 qam | 7 |
1 | ATDMA | 0 | 0 | 0 | 0 |
2 | ATDMA | 0 | 0 | 0 | 0 |
3 | ATDMA | 0 | 0 | 0 | 0 |
4 | ATDMA | 0 | 0 | 0 | 0 |
on 19-08-2021 14:07
on 19-08-2021 14:16
on 19-08-2021 14:23
on 19-08-2021 14:32
Hi,
Thanks for your suggestions. The wireless router is in there because the hub 3.0 was not performing well with the wireless, but I understand your point about elimination. It will be a bit disruptive to do that, but I will have a think to see when that is possible.
The dropouts do coincide with the red marks on the BQM graphs. If the cables were at fault wouldn't we suffer degradation and dropouts all the time including on the rare 'good' days in terms of the BQM graphs?
These are the cables on the route to my laptop:
Hub 3.0 ----- short cat5e -----> Wireless Router ----- long cat 5e -----> Gigabit switch ----- short cat5 patch -----> laptop
on 19-08-2021 14:36
on 20-08-2021 09:50
Thank you for taking a look. Post RS is creeping up this morning and around 4AM seeing synchronisation / partial service in the logs. Not sure if this is 'normal' or 'usual' to see. No T3 timeouts yet like I saw on previous days.
Do you think it best to call 150 to request an Engineer or wait for one of the VM staff to comment?
My current plan is over the w/e to revert out of Cable Modem mode, reset Hub 3 to work in router mode and reconfigure to make the TP-Link C2300 WiFi only - see if that makes a difference to the BQM graphs.
Downstream bonded channels
Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1 | 202750000 | 6.8 | 38 | 256 qam | 9 |
2 | 210750000 | 6.9 | 38 | 256 qam | 10 |
3 | 218750000 | 6.4 | 38 | 256 qam | 11 |
4 | 226750000 | 6.4 | 38 | 256 qam | 12 |
5 | 234750000 | 5.9 | 38 | 256 qam | 13 |
6 | 242750000 | 5.8 | 38 | 256 qam | 14 |
7 | 250750000 | 5.4 | 38 | 256 qam | 15 |
8 | 258750000 | 5.4 | 38 | 256 qam | 16 |
9 | 266750000 | 5.3 | 38 | 256 qam | 17 |
10 | 274750000 | 5.5 | 38 | 256 qam | 18 |
11 | 282750000 | 5.5 | 38 | 256 qam | 19 |
12 | 290750000 | 6 | 38 | 256 qam | 20 |
13 | 298750000 | 6.5 | 38 | 256 qam | 21 |
14 | 306750000 | 6.6 | 38 | 256 qam | 22 |
15 | 314750000 | 6.5 | 38 | 256 qam | 23 |
16 | 322750000 | 6 | 38 | 256 qam | 24 |
17 | 330750000 | 5.9 | 38 | 256 qam | 25 |
18 | 338750000 | 5.9 | 38 | 256 qam | 26 |
19 | 346750000 | 5.9 | 38 | 256 qam | 27 |
20 | 354750000 | 5.8 | 38 | 256 qam | 28 |
21 | 362750000 | 5.8 | 38 | 256 qam | 29 |
22 | 370750000 | 5.6 | 38 | 256 qam | 30 |
23 | 378750000 | 5.5 | 38 | 256 qam | 31 |
24 | 386750000 | 5.3 | 38 | 256 qam | 32 |
Downstream bonded channels
Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1 | Locked | 38.9 | 1127 | 894 |
2 | Locked | 38.6 | 1039 | 736 |
3 | Locked | 38.9 | 1026 | 682 |
4 | Locked | 38.6 | 980 | 804 |
5 | Locked | 38.6 | 962 | 676 |
6 | Locked | 38.6 | 906 | 605 |
7 | Locked | 38.6 | 851 | 588 |
8 | Locked | 38.6 | 825 | 490 |
9 | Locked | 38.6 | 812 | 548 |
10 | Locked | 38.6 | 770 | 490 |
11 | Locked | 38.6 | 740 | 535 |
12 | Locked | 38.6 | 726 | 539 |
13 | Locked | 38.6 | 691 | 450 |
14 | Locked | 38.9 | 682 | 516 |
15 | Locked | 38.9 | 673 | 448 |
16 | Locked | 38.9 | 667 | 453 |
17 | Locked | 38.9 | 644 | 435 |
18 | Locked | 38.9 | 594 | 416 |
19 | Locked | 38.6 | 596 | 415 |
20 | Locked | 38.9 | 612 | 411 |
21 | Locked | 38.9 | 578 | 496 |
22 | Locked | 38.9 | 561 | 402 |
23 | Locked | 38.6 | 535 | 395 |
24 | Locked | 38.6 | 510 | 426 |
Upstream bonded channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 | 39400000 | 37 | 5120 | 64 qam | 6 |
2 | 46200000 | 37.3 | 5120 | 64 qam | 5 |
3 | 25800000 | 36.8 | 5120 | 64 qam | 8 |
4 | 32600000 | 36.8 | 5120 | 64 qam | 7 |
Upstream bonded channels
Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
1 | ATDMA | 0 | 0 | 0 | 0 |
2 | ATDMA | 0 | 0 | 0 | 0 |
3 | ATDMA | 0 | 0 | 0 | 0 |
4 | ATDMA | 0 | 0 | 0 | 0 |
Network Log
Time Priority Description
20/08/2021 04:03:16 | Warning! | RCS Partial Service;CM-MAC=x;CMTS-MAC=x;CM-QOS=1.1;CM-VER=3.0; |
20/08/2021 04:03:16 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=x;CMTS-MAC=x;CM-QOS=1.1;CM-VER=3.0; |
20/08/2021 04:02:25 | Warning! | RCS Partial Service;CM-MAC=x;CMTS-MAC=x;CM-QOS=1.1;CM-VER=3.0; |