T3 and dropouts

[pazza711]

Hi All, 

I've been having some issues lately with the Wi-Fi connection dropping. 
The signal has never been the best in the bedroom but never had so many dropouts as I have recently.

I've checked the logs and found some critical issues - I'm not sure what exactly the logs show but hoping someone can see if there are any issues they can spot? 

Thanks in advance

[pazza711]

Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

1	234750000	0	38	256 qam	13
2	138750000	1.7	38	256 qam	1
3	146750000	1.2	38	256 qam	2
4	154750000	1.2	38	256 qam	3
5	162750000	1	38	256 qam	4
6	170750000	0.4	38	256 qam	5
7	178750000	0.2	38	256 qam	6
8	186750000	0	38	256 qam	7
9	194750000	-0.4	38	256 qam	8
10	202750000	0.2	38	256 qam	9
11	210750000	0.2	38	256 qam	10
12	218750000	0.2	38	256 qam	11
13	226750000	0.7	38	256 qam	12
14	242750000	0.2	40	256 qam	14
15	250750000	0.7	38	256 qam	15
16	258750000	0.4	40	256 qam	16
17	266750000	0.9	38	256 qam	17
18	274750000	0.9	40	256 qam	18
19	282750000	0.7	40	256 qam	19
20	290750000	1	40	256 qam	20
21	298750000	1.2	40	256 qam	21
22	306750000	1	38	256 qam	22
23	314750000	1.2	40	256 qam	23
24	322750000	1	38	256 qam	24

 

[pazza711]

Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1	Locked	38.6	21	0
2	Locked	38.6	58	0
3	Locked	38.9	42	0
4	Locked	38.9	32	0
5	Locked	38.6	54	7754
6	Locked	38.9	36	0
7	Locked	38.6	19	0
8	Locked	38.9	23	0
9	Locked	38.6	23	0
10	Locked	38.9	15	0
11	Locked	38.6	15	0
12	Locked	38.9	15	0
13	Locked	38.9	12	0
14	Locked	38.9	15	0
15	Locked	38.6	9	0
16	Locked	38.9	8	0
17	Locked	38.9	15	0
18	Locked	39.8	9	0
19	Locked	40.3	20	0
20	Locked	40.3	11	0
21	Locked	40.3	14	0
22	Locked	38.9	12	0
23	Locked	40.3	17	0
24	Locked	38.9	13	0

 

[pazza711]

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

1	25800004	43.5	5120	64 qam	14
2	32600039	44.5	5120	64 qam	13
3	39399991	45.5	5120	64 qam	12
4	46200000	46	5120	64 qam	11

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	1	0
4	ATDMA	0	0	0	0

[pazza711]

Network Log

Time Priority Description

27/04/2022 11:35:46	Warning!	LAN login FAILED : Incorrect Username / Password / ConnectionType;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
27/04/2022 08:52:21	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
24/04/2022 11:30:33	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
24/04/2022 09:53:57	notice	DHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt060-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
24/04/2022 09:53:57	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
19/04/2022 21:13:5	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
19/04/2022 08:48:36	notice	DHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt060-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
19/04/2022 08:48:36	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
17/04/2022 05:47:8	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
16/04/2022 05:37:24	notice	NOTICE ATOM is restarted due to Kernel/oops panic as part of Self Healing Mechanism ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/04/2022 20:48:36	notice	DHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt060-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/04/2022 20:48:36	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/04/2022 18:26:8	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/04/2022 03:26:33	notice	NOTICE ATOM is restarted due to Kernel/oops panic as part of Self Healing Mechanism ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/04/2022 04:22:26	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
12/04/2022 21:56:0	notice	NOTICE ATOM is restarted due to Kernel/oops panic as part of Self Healing Mechanism ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
12/04/2022 11:57:0	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
12/04/2022 08:48:36	notice	DHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt060-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
12/04/2022 08:48:36	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/04/2022 12:33:49	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

[jbrennand]

Not too much wrong there, although down channel 5 looks odd can you do this...
_________________________________

Switch the Hub off and unplug it from the mains supply for five minutes. Whilst it's off, do a quick check that all of your coax cable connections are in nice and "finger" tight - at the Hub and wall box and also at any connectors etc. Ensure there are no “unterminated cable loose ends. Disconnect all the connections and reconnect to be sure. Also check that the internal wiring is ok with no kinking or chaffing, check that all looks good with the outside cabling and wall box (no “staples, etc.,) piercing the cables. Then switch the Hub back on and leave ~5 minutes

When all done, check back in the settings and ensure that the RS error counts and any T3 errors have all reset to 0. Then check every hour or so to see if they start reappearing - they shouldn't. If they do (particularly the postRS ones in channel 5) you have a problem (noise) that may need a Tech visit will sort.

Also,

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”. Click the lower link (Share Live Graph) then click generate. Copy the text in the Direct Link box, beware, there may be more text than you can see. On here click the Link icon (2 links chain to the left of the camera icon) In the URL box paste the link you copied and then click OK

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

[pazza711]

Thanks John,
I will try the above, appreciate you taking the time to have a look 🙂

[pazza711]

https://www.thinkbroadband.com/broadband/monitoring/quality/share/4524e937ca8aa914ad2d9327730178482b... 

Here's a link to the BQM 🙂

[jbrennand]

its not great... what does the RS error table look like now - post it again here

[pazza711]

Here is the latest downstream data from just now - not showing any post RD errors

Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1	Locked	38.9	2	0
2	Locked	38.6	26	0
3	Locked	38.9	20	0
4	Locked	38.9	20	0
5	Locked	38.6	21	0
6	Locked	38.6	16	0
7	Locked	38.6	8	0
8	Locked	38.6	7	0
9	Locked	38.6	6	0
10	Locked	38.9	6	0
11	Locked	38.9	7	0
12	Locked	38.6	7	0
13	Locked	38.9	8	0
14	Locked	40.3	9	0
15	Locked	38.9	8	0
16	Locked	40.3	0	0
17	Locked	38.9	8	0
18	Locked	40.3	9	0
19	Locked	40.3	10	0
20	Locked	40.9	7	0
21	Locked	40.3	6	0
22	Locked	40.3	6	0
23	Locked	40.3	6	0
24	Locked	38.9	6	0