Hub 3 modem keeps losing internet

[abcd-abcd]

Hello - can anyone help? I have a comprehensive TP-Link wireless network which I think functions pretty well, but we get daily dropouts at critical times during work Zooms etc... any ideas please? This from browser/192.168.100.1/Network Status/Network Log - thank you (BTW I had to assemble the image below in Photoshop as I wasn't able to paste the table in here due to "html errors".)

 

[lotharmat]

Can you post your Hub status and logs?
Someone should be spot if there is a problem
Navigate to http://192.168.0.1 (or http://192.168.100.1 - if in modem mode)
Don't log in!
Click on 'router status'
Copy/paste the data from each of the tabs. The forum software will remove the MAC addresses for you (you may need to click the 'post' button again).

Also, set up a 'Broadband Quality Monitor'. This will monitor the state of your connection and record any network dropouts etc - You can do this at ThinkBroadband (https://www.thinkbroadband.com/broadband/monitoring/quality)
Give it a while to gather data and then click 'Share Live graph' and paste the 'Direct Link' into the forum!

[gary_dexter]

Copy and paste the tables as text - just click Post again after the error messages and it should post them

[jbrennand]

What TP-link wireless network do you have? Is it a mesh system? What model are the "units"?

[abcd-abcd]

Thanks very much all for your replies. Here is my cable modem status. (BTW I don't believe that the problem is the TP-Link mesh network which consists of an Archer C6 for the back of the house and various TP-Link Powerline modules for the front of the house). Message exceeds 20,000 characters, so I'll try to split it...

Item Status Comments

Acquired Downstream Channel (Hz)	203000000	Locked
Ranged Upstream Channel (Hz)	25800069	Locked
Provisioning State	Online

Downstream bonded channels

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

1	203000000	-0.2	37	256 qam	9
2	211000000	-0.2	37	256 qam	10
3	219000000	0	37	256 qam	11
4	227000000	0	37	256 qam	12
5	235000000	0	37	256 qam	13
6	243000000	0	37	256 qam	14
7	251000000	0.2	37	256 qam	15
8	259000000	0.5	37	256 qam	16
9	267000000	0.7	37	256 qam	17
10	275000000	0.5	37	256 qam	18
11	283000000	1.2	37	256 qam	19
12	291000000	1.2	37	256 qam	20
13	299000000	1.4	37	256 qam	21
14	307000000	1.5	37	256 qam	22
15	315000000	1.7	37	256 qam	23
16	323000000	1.5	37	256 qam	24
17	331000000	1.5	37	256 qam	25
18	339000000	2	38	256 qam	26
19	347000000	2	38	256 qam	27
20	355000000	1.7	38	256 qam	28
21	363000000	2.2	37	256 qam	29
22	371000000	2.7	38	256 qam	30
23	379000000	2.4	37	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	4266	535
2	Locked	37.3	4694	382
3	Locked	37.6	5333	492
4	Locked	37.6	4195	638
5	Locked	37.3	3046	405
6	Locked	37.6	4994	519
7	Locked	37.3	3590	507
8	Locked	37.6	1799	620
9	Locked	37.3	1985	428
10	Locked	37.6	2046	464
11	Locked	37.6	2313	436
12	Locked	37.6	1482	369
13	Locked	37.3	1659	457
14	Locked	37.3	1290	396
15	Locked	37.6	1112	485
16	Locked	37.6	1929	417
17	Locked	37.6	1830	359
18	Locked	38.6	924	407
19	Locked	38.6	1376	452
20	Locked	38.6	1575	487
21	Locked	37.6	1142	352
22	Locked	38.9	960	392
23	Locked	37.6	1096	372
24	Locked	38.6	1013	583

Upstream bonded channels

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

1	25800069	51	5120	64 qam	6
2	39400099	51	5120	64 qam	4
3	46199952	51	5120	64 qam	3
4	32600039	51	5120	64 qam	5

Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	ATDMA	0	0	15	0
2	ATDMA	0	0	3	0
3	ATDMA	0	0	5	0
4	ATDMA	0	0	4	0

[abcd-abcd]

General Configuration

Network access	Allowed
Maximum Number of CPEs	1
Baseline Privacy	Enabled
DOCSIS Mode	Docsis30
Config file	cmreg-vmdg505-bbt057-b.cm

Primary Downstream Service Flow

SFID	2760234
Max Traffic Rate	117000047
Max Traffic Burst	42600
Min Traffic Rate	0

Primary Upstream Service Flow

SFID	2760233
Max Traffic Rate	10500047
Max Traffic Burst	16320
Min Traffic Rate	0
Max Concatenated Burst	16320
Scheduling Type	BestEffort

Network Log

Time Priority Description

14/06/2021 12:42:10	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/06/2021 12:40:32	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2021 12:32:31	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
12/06/2021 22:30:1	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
12/06/2021 07:54:41	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
10/06/2021 13:15:35	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
08/06/2021 19:54:40	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
08/06/2021 10:41:4	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
05/06/2021 07:54:40	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/06/2021 10:59:30	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
03/06/2021 14:40:15	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
03/06/2021 14:06:52	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
03/06/2021 13:55:32	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/06/2021 23:37:52	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/06/2021 14:53:11	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/06/2021 14:53:11	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/06/2021 13:57:13	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/06/2021 19:54:39	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
31/05/2021 13:48:50	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/05/2021 08:37:26	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

[jbrennand]

Is the Hub in modem mode with the Archer doing the routing? (If not - why not?)

[lotharmat]

Upstream power is right at the top of acceptable.

This will be causing the T3 timeouts and then the downstream issues!

VM Staff will likely be along shortly and will probably need to book an engineer!

[abcd-abcd]

"VM Staff will likely be along shortly and will probably need to book an engineer!"

Hello VM Staff - are you going to be in touch please?

[abcd-abcd]

John - yes that's correct, the hub 3 is in modem mode and the TP-Link devices are the WiFi