on 01-06-2021 17:32
Hi,
So since the weekend (possibly Friday) we've had terrible upload speeds on our M500 connection. Various speed tests have given between 340 and 450 Mbps down, which is fine obviously. But Upload speeds are hovering around 0.1 Mbps sometimes as high as 0.4, which is not fine. Especially as its meant to be around 36.
It's a wired connection, tried restarting everything etc. So all the usual boxes are ticked. HUB3 which is in modem mode.
It is also having intermittent DNS probe errors popping up and just weird failures when loading stuff, which I've not been able to work out if they're handshake issues or some post loading thing on various pages where it uploads requests and they fail or if its the DNS. I can probably switch to OpenDNS or Google DNS to eliminate that issue though.
on 01-06-2021 17:34
Downstream:
Downstream bonded channels
Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1 | 299000000 | -1.9 | 37 | 256 qam | 21 |
2 | 203000000 | -0.5 | 37 | 256 qam | 9 |
3 | 211000000 | -0.9 | 37 | 256 qam | 10 |
4 | 219000000 | -0.9 | 35 | 256 qam | 11 |
5 | 227000000 | -1.2 | 33 | 256 qam | 12 |
6 | 235000000 | -1.4 | 37 | 256 qam | 13 |
7 | 243000000 | -1.5 | 37 | 256 qam | 14 |
8 | 251000000 | -1.5 | 37 | 256 qam | 15 |
9 | 259000000 | -1.9 | 37 | 256 qam | 16 |
10 | 267000000 | -1.9 | 37 | 256 qam | 17 |
11 | 275000000 | -2.2 | 37 | 256 qam | 18 |
12 | 283000000 | -2.4 | 37 | 256 qam | 19 |
13 | 291000000 | -2.2 | 37 | 256 qam | 20 |
14 | 307000000 | -1.9 | 38 | 256 qam | 22 |
15 | 315000000 | -2 | 37 | 256 qam | 23 |
16 | 323000000 | -2 | 37 | 256 qam | 24 |
17 | 331000000 | -1.9 | 37 | 256 qam | 25 |
18 | 339000000 | -1.9 | 37 | 256 qam | 26 |
19 | 347000000 | -1.9 | 37 | 256 qam | 27 |
20 | 355000000 | -1.5 | 38 | 256 qam | 28 |
21 | 363000000 | -1.7 | 38 | 256 qam | 29 |
22 | 371000000 | -2 | 38 | 256 qam | 30 |
23 | 379000000 | -2.2 | 38 | 256 qam | 31 |
24 | 387000000 | -2.2 | 38 | 256 qam | 32 |
Downstream bonded channels
Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1 | Locked | 37.6 | 212 | 978 |
2 | Locked | 37.3 | 711 | 2247 |
3 | Locked | 37.6 | 450 | 1092 |
4 | Locked | 35 | 1081 | 2894 |
5 | Locked | 33.9 | 37170 | 2920 |
6 | Locked | 37.6 | 337 | 3325 |
7 | Locked | 37.3 | 344 | 7143 |
8 | Locked | 37.3 | 343 | 7296 |
9 | Locked | 37.6 | 431 | 7125 |
10 | Locked | 37.6 | 495 | 7015 |
11 | Locked | 37.6 | 503 | 7023 |
12 | Locked | 37.6 | 432 | 6955 |
13 | Locked | 37.6 | 284 | 6973 |
14 | Locked | 38.6 | 191 | 7473 |
15 | Locked | 37.6 | 172 | 7501 |
16 | Locked | 37.6 | 135 | 7603 |
17 | Locked | 37.6 | 93 | 7617 |
18 | Locked | 37.3 | 86 | 7335 |
19 | Locked | 37.6 | 79 | 7755 |
20 | Locked | 38.6 | 81 | 7728 |
21 | Locked | 38.6 | 138 | 7865 |
22 | Locked | 38.9 | 89 | 7045 |
23 | Locked | 38.6 | 98 | 6673 |
24 | Locked | 38.9 | 3151 | 9223 |
on 01-06-2021 17:35
Upstream bonded channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 | 32601360 | 40 | 5120 | 16 qam | 5 |
2 | 46200301 | 40.8 | 5120 | 16 qam | 3 |
3 | 39399580 | 40.3 | 5120 | 16 qam | 4 |
4 | 25800670 | 40.3 | 5120 | 16 qam | 6 |
Upstream bonded channels
Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
1 | ATDMA | 0 | 0 | 3 | 0 |
2 | ATDMA | 0 | 0 | 0 | 0 |
3 | ATDMA | 0 | 0 | 0 | 0 |
4 | ATDMA | 0 | 0 | 82 | 0 |
Network Log
Time Priority Description
01/06/2021 16:26:19 | notice | LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:08:0 | critical | No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:06:8 | Warning! | RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:04:5 | Warning! | Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:04:1 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:04:1 | Warning! | RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:04:0 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:03:30 | Warning! | Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:03:29 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:03:28 | Warning! | RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:03:28 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:03:28 | Warning! | RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:03:24 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:03:24 | Warning! | RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:03:24 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:03:20 | Warning! | RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:02:28 | Warning! | Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:02:24 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:02:23 | Warning! | RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
01/06/2021 15:02:23 | critical | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; |
on 01-06-2021 17:39
01-06-2021 21:01 - edited 01-06-2021 21:09
You've got noise on the upstream. Check all the connectors are tight and then wait for someone from VM to confirm whether this is an area fault or whether they are going to book an engineer. If it's an area fault it could take months to resolve, VM do not do anything quickly.
Edit: If you have neighbours on VM that are also showing 16QAM on the upstream channels then it's likely an area fault.
on 01-06-2021 21:09
on 03-06-2021 19:26
Good evening @Zephyntor
Welcome to the forums and thank you so much for taking the time to post.
I have managed to take a look over your account and it seems that you have been suffering form an outage, on the plus side the notes say that this should have been fixed today.
Can you pinhole re-set the hub and monitor over the next 24 hours.
Kind regards,
Zak_M
on 03-06-2021 19:36
Hi,
No need to pinhole reset the hub, the issue got fixed yesterday as I looked at the status and someone's complaining (not mine as I was told it was fine even though it wasn't) got them to fix the issue. Back to 500Mbs (sometimes 400) down and 37Mbps up.
Thanks
on 03-06-2021 19:42
Thanks for letting me know.
Glad things are looking up.
If we are able to assist you further then please do let me know.
Kind regards,
Zak_M
on 25-06-2021 00:00
It's once again happening.
500Mbps has been reduced to 100Mbps down which I'm unhappy about but its functional. However the upload speed has again dropped to 0.1-0.5Mbps making most usage on the net basically unusable. Checked again and there's similar amounts of noise on the upstream channels.
There's no easy way to just register the fact anywhere. The service status checker claims everything is fine. Then
https://www.virginmedia.com/help/virgin-media-slow-wifi-connection/how-are-you-connected
If you click wired it takes you to a trouble shooter for wifi. Is it actually trying to actively make people angry?
Then that (https://www.virginmedia.com/help/virgin-media-slow-wifi-connection) asks the colour of the light on the HUB3 but doesn't include the modem mode one. Then proceeds to try and make you move wifi devices about when I said they're wired.