Virgin Media Community

[ClanMoffat]

For some time we experienced repeated dropouts with HUB3 and thought that moving to HUB4 and 1G broadband might help resolve the issues...

The issues remain...
For example:
https://www.thinkbroadband.com/broadband/monitoring/quality/share/36debcb4047c4510c626c18e715153394a...

While watching a single movie on Saturday evening, the broadband cut out almost once every 30 minutes!!!

The drop outs occur for both WiFi and Ethernet connections!
After several minutes the router appears to reboot and connectivity is regained.
I have split devices into using either 2.4 or 5GHz.

Previpously when working OK, https://samknows.com/realspeed/ reported Speed to Hub of over 1000, and Wifi to mobile of around 350..

Oddly connectivity from a PS4 to HUB4 seems to be slower that from the PS4 to HUB3 router,,,

Urgent assistance is required - our family household has 2 student teachers and one other university student, with all needing consistent broadband to complete our studies...

What is going on with the network?
The fact that the dropouts occur with both Hub3 and Hub4 suggest it is not a local issue...
The fast connectivity to the router (when working) suggest that it is an intermittent issue outwith our home...

I'm happy to provide other information or logs as required, just let me know what you need...

The drop outs identified from monitoring suggest a significant issue.

[ClanMoffat]

Cable Modem Status 

Cable Modem Status	Online	DOCSIS 3.1
Primary downstream channel	Locked	SC-QAM
DOCSIS 3.0 channels	31	4
DOCSIS 3.1 channels	1	0

[ClanMoffat]

Downstream

3.0 Downstream channels

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

2	147000000	3.5	39	QAM256	2
1	139000000	3.6	39	QAM256	1
3	155000000	3.1	40.4	QAM256	3
4	163000000	2.6	38.6	QAM256	4
5	171000000	2.6	40.4	QAM256	5
6	179000000	2.2	39	QAM256	6
7	187000000	1.9	40.4	QAM256	7
8	195000000	2.4	40.4	QAM256	8
9	203000000	2.5	40.4	QAM256	9
10	211000000	2.4	40.9	QAM256	10
11	219000000	2.4	40.4	QAM256	11
12	227000000	2.1	40.4	QAM256	12
13	235000000	2.3	40.4	QAM256	13
14	243000000	1.5	40.9	QAM256	14
15	251000000	1.3	40.4	QAM256	15
16	259000000	1.4	40.9	QAM256	16
17	267000000	1.2	40.4	QAM256	17
18	275000000	1.2	40.4	QAM256	18
19	283000000	1.1	40.4	QAM256	19
20	291000000	0.5	40.4	QAM256	20
21	299000000	0.3	40.4	QAM256	21
22	307000000	0.4	40.4	QAM256	22
23	315000000	-0.5	39	QAM256	23
24	323000000	0.9	40.4	QAM256	24
25	331000000	0.4	39	QAM256	25
26	371000000	-0.5	40.4	QAM256	26
27	379000000	-0.5	40.4	QAM256	27
28	387000000	-0.5	40.9	QAM256	28
29	395000000	-0.6	40.4	QAM256	29
30	403000000	-1.9	39	QAM256	30
31	411000000	-1.4	40.4	QAM256	31

3.0 Downstream channels

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

2	Locked	38.983261	1229	635
1	Locked	38.983261	1354	2160
3	Locked	40.366287	2636	1762
4	Locked	38.605377	1707	3013
5	Locked	40.366287	163	331
6	Locked	38.983261	1824	1466
7	Locked	40.366287	2311	19
8	Locked	40.366287	206	0
9	Locked	40.366287	215	1
10	Locked	40.946209	224	0
11	Locked	40.366287	297	1
12	Locked	40.366287	274	2
13	Locked	40.366287	207	3
14	Locked	40.946209	175	1
15	Locked	40.366287	200	1
16	Locked	40.946209	176	1
17	Locked	40.366287	210	0
18	Locked	40.366287	190	1
19	Locked	40.366287	196	0
20	Locked	40.366287	147	0
21	Locked	40.366287	199	0
22	Locked	40.366287	156	0
23	Locked	38.983261	148	0
24	Locked	40.366287	160	0
25	Locked	38.983261	198	0
26	Locked	40.366287	179	0
27	Locked	40.366287	105	0
28	Locked	40.946209	102	0
29	Locked	40.366287	209	0
30	Locked	38.983261	139	0
31	Locked	40.366287	102	0

3.1 Downstream channelsChannel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)

33

80

4K

1560

QAM4096

424

3.1 Downstream channelsChannel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)

33

Locked

42

-0.9

17446154

2449

[ClanMoffat]

UPSTREAM

3.0 Upstream channels

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

1	60300000	47	5120 KSym/sec	64QAM	6
2	46200000	45.8	5120 KSym/sec	64QAM	8
3	53700000	46.8	5120 KSym/sec	64QAM	7
4	39400000	46	5120 KSym/sec	64QAM	9

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	US_TYPE_STDMA	0	0	3	0
2	US_TYPE_STDMA	0	0	242	0
3	US_TYPE_STDMA	0	0	243	0
4	US_TYPE_STDMA	0	0	232	0

[ClanMoffat]

CONFIGURATION

General Configuration

Network access	true
Maximum Number of CPEs	1
Baseline Privacy	true
DOCSIS Mode	3.1
Config file	cmreg-vmdg640-bbt076-b.cm

Primary Downstream Service Flow

SFID	12040
Max Traffic Rate	1200000450
Max Traffic Burst	42600
Min Traffic Rate	0

Primary Upstream Service Flow

SFID	12039
Max Traffic Rate	55000270
Max Traffic Burst	42600
Min Traffic Rate	0
Max Concatenated Burst	42600
Scheduling Type	bestEffort