Virgin Media Community

[Mattc86]

This is absolutely disgusting in the last 2 days I have only got between a max of 1 and 10mb download when I'm paying for the M350 level of broadband (Upload speeds appear to be ok)

I've carried out all the recommended procedures (Pin Reset + Multiple Resets) and running on a wired connection and still getting extremely low speeds.

Is there an underlying issue with your network as there's nothing on your service status page for my area

[carl_pearce]

Have you checked your router stats?

[Mattc86]

Yes however im not sure what Im suppose to be looking for?

[carl_pearce]

Could you paste the results in here.

[Mattc86]

from which tab specifically?

[carl_pearce]

Downstream, upstream, and network log.

[Mattc86]

Downstream bonded channels

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

1	315000000	-2.5	36	256 qam	23
2	139000000	-3.4	26	256 qam	1
3	147000000	-3.4	27	256 qam	2
4	155000000	-3.4	27	256 qam	3
5	163000000	-3.2	28	256 qam	4
6	171000000	-3	29	256 qam	5
7	179000000	-3	29	256 qam	6
8	187000000	-3	30	256 qam	7
9	195000000	-3	31	256 qam	8
10	203000000	-3	31	256 qam	9
11	211000000	-3	31	256 qam	10
12	219000000	-3	32	256 qam	11
13	227000000	-2.9	33	256 qam	12
14	235000000	-3	33	256 qam	13
15	243000000	-3	33	256 qam	14
16	251000000	-3	33	256 qam	15
17	259000000	-2.9	34	256 qam	16
18	267000000	-3	34	256 qam	17
19	275000000	-3	34	256 qam	18
20	283000000	-2.7	35	256 qam	19
21	291000000	-2.5	35	256 qam	20
22	299000000	-2.2	36	256 qam	21
23	307000000	-2.5	36	256 qam	22
24	323000000	-2.7	36	256 qam	24

Downstream bonded channels

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

1	Locked	36.6	11	0
2	Locked	26.8	251463203	82953156
3	Locked	27.3	324520451	7919433
4	Locked	27.9	313603326	86795
5	Locked	28.7	234809055	37
6	Locked	29.4	137219808	0
7	Locked	29.9	74386679	0
8	Locked	30.5	37394621	0
9	Locked	31.1	18518621	0
10	Locked	31.6	8128427	0
11	Locked	31.9	3841329	0
12	Locked	32.3	1555365	0
13	Locked	33	544615	0
14	Locked	33.3	221450	0
15	Locked	33.4	88044	0
16	Locked	33.9	29345	0
17	Locked	34.3	10609	0
18	Locked	34.9	2628	0
19	Locked	34.9	804	0
20	Locked	35.5	219	0
21	Locked	35.5	44	0
22	Locked	36.1	44	0
23	Locked	36.6	12	0
24	Locked	36.6	4	0

[Mattc86]

Upstream bonded channels

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

1	25800000	4.55	5120	64 qam	4
2	46200000	4.675	5120	64 qam	1
3	39400000	4.6	5120	64 qam	2
4	32600000	4.6	5120	64 qam	3

Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	ATDMA	0	0	0	0
2	ATDMA	0	0	0	0
3	ATDMA	0	0	0	0
4	ATDMA	0	0	0	0

[Mattc86]

Network Log

Time Priority Description

07/07/2020 21:43:2	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/07/2020 21:42:53	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/07/2020 19:08:16	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/07/2020 19:08:7	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
06/07/2020 13:17:10	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
06/07/2020 13:16:48	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
06/07/2020 07:30:3	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
06/07/2020 07:27:59	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
05/07/2020 08:57:48	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/07/2020 02:38:25	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
03/07/2020 11:00:12	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:39	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:37	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:36	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:36	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:34	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:34	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:34	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:34	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:33	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

07/07/2020 21:43:2	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/07/2020 21:42:53	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/07/2020 19:08:16	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/07/2020 19:08:7	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
06/07/2020 13:17:10	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
06/07/2020 13:16:48	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
06/07/2020 07:30:3	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
06/07/2020 07:27:59	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
05/07/2020 08:57:48	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/07/2020 02:38:25	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
03/07/2020 11:00:12	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:39	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:37	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:36	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:36	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:34	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:34	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:34	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:34	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 09:38:33	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

[carl_pearce]

You appear to have a lot of 'Post RS Errors' errors on a few of the channels, which normally indicates noise on the line.

The SNR should be above 34.5dB for each channel, and the majority, more than half?, of yours are below this value.

The only way to fix this, other than checking the white cable is secure either end, is for an engineer visit.

Using my router as an example

Downstream bonded channels

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

1	419000000	0	38	256 qam	30
2	187000000	2.9	38	256 qam	7
3	195000000	2.4	38	256 qam	8
4	203000000	1.7	38	256 qam	9
5	211000000	1.7	38	256 qam	10
6	219000000	1	38	256 qam	11
7	227000000	0.7	38	256 qam	12
8	235000000	0	38	256 qam	13
9	243000000	-0.2	38	256 qam	14
10	251000000	0	38	256 qam	15
11	259000000	0	38	256 qam	16
12	267000000	0	38	256 qam	17
13	275000000	0.2	38	256 qam	18
14	283000000	0.4	38	256 qam	19
15	291000000	0.5	37	256 qam	20
16	299000000	0.7	37	256 qam	21
17	307000000	0.7	37	256 qam	22
18	315000000	1	37	256 qam	23
19	323000000	0.9	37	256 qam	24
20	379000000	0.5	38	256 qam	25
21	387000000	0.2	38	256 qam	26
22	395000000	0.4	38	256 qam	27
23	403000000	0	38	256 qam	28
24	411000000	0.2	38	256 qam	29