Virgin Media

asidana · ‎14-05-2021

I have started to get slow up and down speeds since last 2 days. I cannot get over 600 down 20 down. I used to get 950+ down and 40+ up.

I use my router in modem mode with computer directly connected via cat5e ethernet cable and did not have any issues before.

There is a garbled message about some issue I cannot make out when I call customer service - literally sounds like some one left the message from a low reception mobile line.

As usually customer service cannot find any issues.

Here are my stats. Can anyone see anything wrong?

Cable Modem StatusItem Status CommentsChannel Overview Downstream Upstream

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

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

33

96

4K

1880

QAM4096

759

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

1	53700000	49.770599	5120 KSym/sec	64QAM	2
2	39400000	47.770599	5120 KSym/sec	16QAM	4
3	46200000	49.020599	5120 KSym/sec	16QAM	3
4	60300000	49.020599	5120 KSym/sec	64QAM	1

3.0 Upstream channelsChannel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	US_TYPE_STDMA	0	0	0	0
2	US_TYPE_STDMA	0	0	0	0
3	US_TYPE_STDMA	0	0	0	0
4	US_TYPE_STDMA	0	0	0	0

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	47454
Max Traffic Rate	1200000450
Max Traffic Burst	42600
Min Traffic Rate	0

Primary Upstream Service Flow

SFID	47453
Max Traffic Rate	55000270
Max Traffic Burst	42600
Min Traffic Rate	0
Max Concatenated Burst	42600
Scheduling Type	bestEffort

conman33158 · ‎16-05-2021

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

1	53700000	49.770599	5120 KSym/sec	64QAM	2
2	39400000	47.770599	5120 KSym/sec	16QAM	4
3	46200000	49.020599	5120 KSym/sec	16QAM	3
4	60300000	49.020599	5120 KSym/sec	64QAM	1

2 of your upload streams are on the wrong modulation and the power levels are too high. I cannot comment on the download streams or network logs as you failed to add them 🙂

***********************************************************************************************************************************
BT Full Fibre 900 FTTP - Asus RT-AX82U to Openreach ONT Box & Asus RT-AX56U with AiMesh setup
***********************************************************************************************************************************

asidana · ‎16-05-2021

Thank you. Does this mean I need an engineer visit? It seems to be a bit better today. Could you advice on the below data?

3.0 Upstream channels

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

1	53700000	47.270599	5120 KSym/sec	64QAM	2
2	39400000	45.770599	5120 KSym/sec	16QAM	4
3	46200000	46.520599	5120 KSym/sec	16QAM	3
4	60300000	47.520599	5120 KSym/sec	64QAM	1

Network Log

Time	Priority	Description
Fri May 14 18:37:52 2021	5	MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Fri May 14 18:40:33 2021	6	CM-STATUS message sent. Event Type Code: 5; Chan ID: 3; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Fri May 14 19:55:52 2021	5	Lost MDD Timeout;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Fri May 14 19:56:16 2021	6	CM-STATUS message sent. Event Type Code: 5; Chan ID: 1; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Fri May 14 20:35:08 2021	5	Lost MDD Timeout;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Fri May 14 20:35:09 2021	6	CM-STATUS message sent. Event Type Code: 5; Chan ID: 5; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 05:14:38 2021	3	No Ranging Response received - T3 time-out;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 05:23:18 2021	6	CM-STATUS message sent. Event Type Code: 5; Chan ID: 5; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 07:26:02 2021	5	Lost MDD Timeout;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 07:26:24 2021	6	CM-STATUS message sent. Event Type Code: 5; Chan ID: 5; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 10:17:07 2021	5	Lost MDD Timeout;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 10:17:09 2021	6	CM-STATUS message sent. Event Type Code: 4; Chan ID: 3; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 10:17:39 2021	5	Lost MDD Timeout;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 10:17:44 2021	6	CM-STATUS message sent. Event Type Code: 4; Chan ID: 3; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 10:17:55 2021	5	Lost MDD Timeout;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 10:17:59 2021	6	CM-STATUS message sent. Event Type Code: 5; Chan ID: 4; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 10:18:55 2021	5	Lost MDD Timeout;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 10:19:11 2021	6	CM-STATUS message sent. Event Type Code: 5; Chan ID: 2; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 10:21:37 2021	5	Lost MDD Timeout;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 10:21:41 2021	6	CM-STATUS message sent. Event Type Code: 5; Chan ID: 5; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 10:51:35 2021	5	Lost MDD Timeout;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 10:51:36 2021	6	CM-STATUS message sent. Event Type Code: 5; Chan ID: 5; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 10:51:39 2021	5	Lost MDD Timeout;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 10:51:40 2021	6	CM-STATUS message sent. Event Type Code: 4; Chan ID: 3; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 10:52:17 2021	5	Lost MDD Timeout;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 10:52:31 2021	6	CM-STATUS message sent. Event Type Code: 5; Chan ID: 5; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 11:00:15 2021	5	Lost MDD Timeout;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 11:00:26 2021	6	CM-STATUS message sent. Event Type Code: 4; Chan ID: 3; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 11:00:55 2021	5	Lost MDD Timeout;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 11:01:03 2021	6	CM-STATUS message sent. Event Type Code: 5; Chan ID: 4; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 11:01:23 2021	5	Lost MDD Timeout;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 11:01:25 2021	6	CM-STATUS message sent. Event Type Code: 5; Chan ID: 24; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 17:32:17 2021	5	Lost MDD Timeout;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;
Sat May 15 17:32:21 2021	6	CM-STATUS message sent. Event Type Code: 5; Chan ID: 24; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxx;CMTS-MAC=xxxxx;CM-QOS=1.1;CM-VER=3.1;

asidana · ‎16-05-2021

Downstream info

.0 Downstream channels

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

25	331000000	-1.200001	38.605377	QAM256	25
1	139000000	2.200001	38.983261	QAM256	1
2	147000000	1.799999	40.366287	QAM256	2
3	155000000	1.400002	38.983261	QAM256	3
4	163000000	1.200001	38.983261	QAM256	4
5	171000000	1.200001	40.366287	QAM256	5
6	179000000	0.900002	40.366287	QAM256	6
7	187000000	0.500000	40.366287	QAM256	7
8	195000000	0.400002	40.946209	QAM256	8
9	203000000	0.000000	40.366287	QAM256	9
10	211000000	0.200001	40.366287	QAM256	10
11	219000000	0.099998	40.366287	QAM256	11
12	227000000	-0.099998	40.366287	QAM256	12
13	235000000	-0.299999	40.366287	QAM256	13
14	243000000	-0.599998	40.946209	QAM256	14
15	251000000	-1.000000	38.983261	QAM256	15
16	259000000	-0.900002	40.366287	QAM256	16
17	267000000	-0.700001	40.366287	QAM256	17
18	275000000	-0.900002	40.366287	QAM256	18
19	283000000	-0.900002	40.366287	QAM256	19
20	291000000	-1.099998	38.983261	QAM256	20
21	299000000	-1.700001	40.366287	QAM256	21
22	307000000	-1.799999	40.366287	QAM256	22
23	315000000	-1.599998	38.983261	QAM256	23
24	323000000	-1.500000	38.983261	QAM256	24
26	339000000	-1.500000	38.983261	QAM256	26
27	347000000	-2.400002	38.983261	QAM256	27
28	355000000	-2.299999	38.983261	QAM256	28
29	363000000	-2.200001	38.983261	QAM256	29
30	371000000	-2.900002	38.983261	QAM256	30
31	379000000	-3.000000	38.983261	QAM256	31

3.0 Downstream channels

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

25	Locked	38.605377	0	0
1	Locked	38.983261	1138	380
2	Locked	40.366287	1166	480
3	Locked	38.983261	745	946
4	Locked	38.983261	1721	543
5	Locked	40.366287	1188	248
6	Locked	40.366287	6379	0
7	Locked	40.366287	3	0
8	Locked	40.946209	0	0
9	Locked	40.366287	0	0
10	Locked	40.366287	0	0
11	Locked	40.366287	0	0
12	Locked	40.366287	0	0
13	Locked	40.366287	0	0
14	Locked	40.946209	0	0
15	Locked	38.983261	0	0
16	Locked	40.366287	0	0
17	Locked	40.366287	0	0
18	Locked	40.366287	0	0
19	Locked	40.366287	0	0
20	Locked	38.983261	0	0
21	Locked	40.366287	0	0
22	Locked	40.366287	0	0
23	Locked	38.983261	0	0
24	Locked	38.983261	0	0
26	Locked	38.983261	0	0
27	Locked	38.983261	0	0
28	Locked	38.983261	0	0
29	Locked	38.983261	0	0
30	Locked	38.983261	0	0
31	Locked	38.983261	0	0

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

33

96

4K

1880

QAM4096

759

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

33

Locked

40

-7.1

98027904

82

conman33158 · ‎16-05-2021

You have quite a few Post RS Errors and still 2 upload streams on the wrong modulation.

Have you tried a full factory reset? Hold in the pinhole at the rear of the router for at least 50 seconds and then release (the lights will flash while holding in the pinhole reset button after about 10-15 seconds) then allow 5 minutes for the router to reboot and re-sync the connection.
Please ensure that your WiFi network password is still readable on the Hub sticker before you do this or that you at least have a copy of your original network password.

While in router mode run a test and see if you're getting the same results. Once finished you can put it back into modem mode and run another speed test 🙂

***********************************************************************************************************************************
BT Full Fibre 900 FTTP - Asus RT-AX82U to Openreach ONT Box & Asus RT-AX56U with AiMesh setup
***********************************************************************************************************************************

asidana · ‎16-05-2021

Yea, these logs were after full factory reset. i have booked an engineer visit. hopefully they will be able to fix it.

Thank you very much.

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