Broadband speeds <1 Mbps on Hub 3

[GoRedSox]

Hi Team I've read some other posts, seen that the responses point to an eng call out, just want to confirm that and anything else you may be able to suggest. I've checked that there are no local issues. I ran speed checker using https://www.broadbandspeedchecker.co.uk/

Upstream log below (cannot post more due to 20k char limit), all suggestions, ideas, support are gratefully received.

Upstream bonded channels
Channel	Frequency (Hz)	Power (dBmV)	Symbol Rate (ksps)	Modulation	Channel ID
1	5.4E+07	51	5120	64 qam	2
2	3.9E+07	51	5120	64 qam	4
3	4.6E+07	51	5120	64 qam	3
4	6E+07	51	5120	64 qam	1
Upstream bonded channels
Channel	Channel Type	T1 Timeouts	T2 Timeouts	T3 Timeouts	T4 Timeouts
1	ATDMA	0	0	1	0
2	ATDMA	0	0	0	0
3	ATDMA	0	0	0	0
4	ATDMA	0	0	0	0

[jbrennand · Accepted solution]

Post more details as the Up power levels are high.

Post it this way...

Copy/paste as “Formatted Text” (not images) 3 FULL sets of data onto here – 2 pages from the Downstream, 2 from the Upstream, & the Network Logs page.

Don't worry too much about the formatting it can be easily read & DON’T include personal data or MAC addresses - blank them out - if you copy/paste the data, the board software will do this for you (you may need to click the "submit" button again if you get the error message - it should "go").

Also, in the meantime... If you haven’t already, set up a free, secure and “offlsite” - “Broadband Quality Monitor” to continually monitor the state of your connection and record any true network dropouts , latency issues, packet drops, etc - it will thus allow you to differentiate between those and simple wifi dropouts. It does it 24/7/365 and it keeps a visual record of any/all of your network disconnections, useful data to have to match to the Network logs (in your Hub settings) and also in discussions with VM - note it will take a few hours to start seeing a sensible picture - post up the “link” to the “share live graph” (as per instructions on the TB website) when it starts to develop.

https://www.thinkbroadband.com/broadband/monitoring/quality

[GoRedSox]

Thanks John for your guidance. DS:

Downstream bonded channels
Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1 275000000 -3.5 38 256 qam 18
2 139000000 -2 37 256 qam 1
3 147000000 -0.2 37 256 qam 2
4 155000000 -1.2 37 256 qam 3
5 163000000 -1.7 37 256 qam 4
6 171000000 -1.2 37 256 qam 5
7 179000000 -1.2 37 256 qam 6
8 187000000 -0.9 38 256 qam 7
9 195000000 -1.4 38 256 qam 8
10 203000000 -1.9 38 256 qam 9
11 211000000 -2.4 38 256 qam 10
12 219000000 -2.4 38 256 qam 11
13 227000000 -3.9 36 256 qam 12
14 235000000 -3.9 38 256 qam 13
15 243000000 -3.5 38 256 qam 14
16 251000000 -3 38 256 qam 15
17 259000000 -2.2 38 256 qam 16
18 267000000 -2.5 38 256 qam 17
19 283000000 -3 38 256 qam 19
20 291000000 -2.7 38 256 qam 20
21 299000000 -2.7 38 256 qam 21
22 307000000 -4.2 38 256 qam 22
23 315000000 -2.4 37 256 qam 23
24 323000000 -2 37 256 qam 24


Downstream bonded channels
Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1 Locked 38.9 296 409
2 Locked 37.6 5703 5906
3 Locked 37.6 2086 1593
4 Locked 37.3 973 2101
5 Locked 37.3 1041 2901
6 Locked 37.6 1143 1903
7 Locked 37.6 1015 1736
8 Locked 38.9 1612 411
9 Locked 38.6 683 1517
10 Locked 38.6 942 1826
11 Locked 38.6 1093 1492
12 Locked 38.6 465 411
13 Locked 36.1 1183 1880
14 Locked 38.6 942 1251
15 Locked 38.9 707 1103
16 Locked 38.9 901 344
17 Locked 38.6 508 753
18 Locked 38.6 293 1329
19 Locked 38.6 288 2
20 Locked 38.6 272 16
21 Locked 38.9 208 1522
22 Locked 38.6 196 1173
23 Locked 37.6 66 0
24 Locked 37.3 130 67

Nwk Logs

31/08/2021 15:30 Warning! RCS Partial Service;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
31/08/2021 15:15 critical No Ranging Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
30/08/2021 11:57 Warning! RCS Partial Service;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
30/08/2021 11:05 critical No Ranging Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
30/08/2021 10:30 Error DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
27/08/2021 16:15 Warning! RCS Partial Service;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
27/08/2021 13:38 Error DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
25/08/2021 19:22 Warning! RCS Partial Service;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
25/08/2021 17:50 critical No Ranging Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
25/08/2021 09:00 Warning! RCS Partial Service;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
25/08/2021 07:55 critical No Ranging Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
22/08/2021 19:04 Warning! RCS Partial Service;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
22/08/2021 18:21 Error DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
22/08/2021 15:48 Warning! RCS Partial Service;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
22/08/2021 13:54 critical No Ranging Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
19/08/2021 06:39 Warning! RCS Partial Service;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
19/08/2021 06:21 Error DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
18/08/2021 19:23 Warning! RCS Partial Service;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
18/08/2021 15:50 critical No Ranging Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
17/08/2021 10:09 Warning! RCS Partial Service;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;

[Molly_G]

Hey @GoRedSox,

Many thanks for your recent post! I'm sorry to see you've been having connection issues recently.

I've been able to locate your account from your forums profile and have run some checks from our side. You have both upstream and downstream levels our of spec which we would advise a tech visit for.

I'd like to get this booked in for you, so please just keep an eye on the purple envelope at the top of the page.

If you haven't already, I'd also advise setting up the BQM as per John's reply, as this may come in useful whilst we investigate this.

Kind regards,

[Molly_G]

Hey @GoRedSox,

Thanks so much for getting back to me via private message. As advised, this visit is all booked in for you now and hopefully our engineer can have this resolved for you swiftly.

You can check the appointment, as well as change the date/time via your online My VM Account.

Keep us posted!

Kind regards,

[GoRedSox]

Hi Molly (et al) The engineer visited (thank you again) but I was not at home (I had to go to the office to be able to get work done) and I have no explanation from them as to what was fixed/tweaked/changed. I've been on holiday since, back at my desk today and boy I am seeing super-duper slowness; 2 secs to ping, 0.08 Mbps (that must be a record, surely!).

What to do next?

[lotharmat]

Can you repost up your hub stats (up and downstream) - Let's see how the tech left it - Chances are if you were out they may not have been able to do all the work they could have done!

[GoRedSox]

Downstream bonded channels
Channel	Frequency (Hz)	Power (dBmV)	SNR (dB)	Modulation	Channel ID
1	2.75E+08	-0.7	38	256 qam	18
2	2.03E+08	1.2	38	256 qam	9
3	2.11E+08	0.9	38	256 qam	10
4	2.19E+08	0.9	38	256 qam	11
5	2.27E+08	-0.5	37	256 qam	12
6	2.35E+08	0.5	38	256 qam	13
7	2.43E+08	-0.2	38	256 qam	14
8	2.51E+08	-0.2	38	256 qam	15
9	2.59E+08	1.2	38	256 qam	16
10	2.67E+08	0	38	256 qam	17
11	2.83E+08	0.4	38	256 qam	19
12	2.91E+08	1.2	38	256 qam	20
13	2.99E+08	0.4	38	256 qam	21
14-Jan	3.07E+08	-1	38	256 qam	22
15	3.15E+08	0.9	38	256 qam	23
16	3.23E+08	0.9	38	256 qam	24
17	3.31E+08	-1.2	37	256 qam	25
18	3.71E+08	-1	37	256 qam	26
19	3.79E+08	-0.7	37	256 qam	27
20	3.87E+08	-1.5	37	256 qam	28
21	3.95E+08	-1.5	37	256 qam	29
22	4.03E+08	-1.9	38	256 qam	30
23	4.11E+08	-1.9	37	256 qam	31
24	4.19E+08	-2	37	256 qam	32

Downstream bonded channels
Channel	Locked Status	RxMER (dB)	Pre RS Errors	Post RS Errors
1	Locked	38.9	5369	302
2	Locked	38.6	10194	3525
3	Locked	38.6	7602	8009
4	Locked	38.9	4593	763
5	Locked	37.3	9824	3498
6	Locked	38.9	3547	504
7	Locked	38.6	3698	233
8	Locked	38.9	9001	6458
9	Locked	38.6	3215	398
10	Locked	38.9	2974	204
11	Locked	38.9	4887	609
12	Locked	38.9	1390	266
13	Locked	38.9	1648	196
14	Locked	38.9	2415	319
15	Locked	38.6	883	291
16	Locked	38.6	785	144
17	Locked	37.3	3025	147
18	Locked	37.6	1185	125
19	Locked	37.6	821	108
20	Locked	37.6	1362	18532
21	Locked	37.6	1228	105
22	Locked	38.6	1957	102
23	Locked	37.6	1044	104
24	Locked	37.6	943	103

Upstream bonded channels
Channel	Frequency (Hz)	Power (dBmV)	Symbol Rate (ksps)	Modulation	Channel ID
1	39400000	48	5120	64 qam	4
2	46200000	47.8	5120	64 qam	3
3	53700000	49	5120	64 qam	2
4	60300000	49.3	5120	64 qam	1
Upstream bonded channels
Channel	Channel Type	T1 Timeouts	T2 Timeouts	T3 Timeouts	T4 Timeouts
1	ATDMA	0	0	1	0
2	ATDMA	0	0	0	0
3	ATDMA	0	0	0	0
4	ATDMA	0	0	0	0

Network Log
Time	Priority	Description
19/09/2021 13:10	Warning!	RCS Partial Service;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
17/09/2021 11:48	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
16/09/2021 09:02	critical	No Ranging Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
14/09/2021 08:57	Warning!	RCS Partial Service;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:01	critical	No Ranging Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
13/09/2021 23:06	Warning!	RCS Partial Service;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
13/09/2021 21:04	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;Cm-MAC;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:01	critical	No Ranging Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
13/09/2021 19:30	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
11/09/2021 19:21	Warning!	RCS Partial Service;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
06/09/2021 19:30	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
05/09/2021 22:48	Warning!	RCS Partial Service;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
04/09/2021 15:48	critical	No Ranging Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
03/09/2021 15:30	critical	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
03/09/2021 15:26	Warning!	RCS Partial Service;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
03/09/2021 15:26	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
03/09/2021 15:24	Warning!	Lost MDD Timeout;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
03/09/2021 15:24	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
03/09/2021 15:21	Warning!	Lost MDD Timeout;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;
03/09/2021 15:21	Warning!	RCS Partial Service;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0;

[lotharmat]

Too many PostRS errors for my liking - Looks like noise ingress!

[jbrennand]

You need the Tech back - as Iotharmat says the PostRS errors indicate a potential noise issue.