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Hub 4 Inermittent speed

Hi everyone.

Since upgrading to a new hub 4 but remaining on the M350 service I have notice variances in the speed tests done within minutes of each other varying from 150mbs to 340mbs. With the hub 3 I was recording 360-370mbs. The hub 4 is in modem mode to a Netgear router and in in turn have ethernet connections to smart tvs and desktop. Only wifi is used for mobile devices.

Can someone review the logs below and confirm if everything looks normal? The hub restarted itself this afternoon but intermittently I notice the light on the hub flashing on and off for a couple of seconds.

 
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Re: Hub 4 Inermittent speed

Network Log

Time Priority Description

Thu 01/01/1970 00:01:175RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Fri 30/10/2020 15:25:235MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Fri 30/10/2020 15:28:246SW Download INIT - Via Config file cmreg-vmdg640-bbt062-b.cm
Fri 30/10/2020 15:30:026SW download Successful - Via Config file
Fri 30/10/2020 15:32:345MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Fri 30/10/2020 15:35:436CM-STATUS message sent. Event Type Code: 16; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Fri 30/10/2020 15:58:454DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Fri 30/10/2020 15:58:496CM-STATUS message sent. Event Type Code: 24; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Fri 30/10/2020 16:56:594DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Sat 31/10/2020 07:29:096CM-STATUS message sent. Event Type Code: 16; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Sat 31/10/2020 13:21:325MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:01:183No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon 02/11/2020 10:44:595MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon 02/11/2020 11:14:374DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
 
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Re: Hub 4 Intermittent speed

3.0 Downstream channels

Channel

Frequency (Hz)

Power (dBmV)

SNR (dB)

Modulation

Channel ID

25

331000000

6.199997

38.983261

QAM256

25

1

139000000

11.900002

38.605377

QAM256

1

2

147000000

11.500000

38.983261

QAM256

2

3

155000000

11.400002

38.605377

QAM256

3

4

163000000

11.199997

38.983261

QAM256

4

5

171000000

10.599998

38.983261

QAM256

5

6

179000000

10.099998

38.983261

QAM256

6

7

187000000

10.000000

38.605377

QAM256

7

8

195000000

9.900002

38.605377

QAM256

8

9

203000000

9.500000

38.983261

QAM256

9

10

211000000

9.199997

38.983261

QAM256

10

11

219000000

9.000000

38.983261

QAM256

11

12

227000000

8.900002

38.983261

QAM256

12

13

235000000

8.900002

38.983261

QAM256

13

14

243000000

8.699997

38.605377

QAM256

14

15

251000000

8.599998

38.605377

QAM256

15

16

259000000

8.900002

38.983261

QAM256

16

17

267000000

8.800003

38.983261

QAM256

17

18

275000000

8.000000

38.983261

QAM256

18

19

283000000

7.099998

38.983261

QAM256

19

20

291000000

7.099998

38.983261

QAM256

20

21

299000000

7.400002

38.983261

QAM256

21

22

307000000

7.400002

38.983261

QAM256

22

23

315000000

7.000000

38.983261

QAM256

23

24

323000000

6.400002

38.605377

QAM256

24

26

371000000

5.199997

38.605377

QAM256

26

27

379000000

5.400002

38.983261

QAM256

27

28

387000000

5.099998

38.605377

QAM256

28

29

395000000

4.500000

38.605377

QAM256

29

30

403000000

4.199997

38.605377

QAM256

30

31

411000000

4.400002

38.983261

QAM256

31

 

3.0 Downstream channels

Channel

Lock Status

RxMER (dB)

Pre RS Errors

Post RS Errors

25

Locked

0

0

0

1

Locked

32623326

0

0

2

Locked

33076813

0

0

3

Locked

32810385

0

0

4

Locked

33497526

0

0

5

Locked

35644950

0

0

6

Locked

34809973

0

0

7

Locked

30806907

0

0

8

Locked

245600723

0

0

9

Locked

15579403

0

0

10

Locked

14785405

0

0

11

Locked

14794489

0

0

12

Locked

246576350

0

0

13

Locked

13937589

0

0

14

Locked

15893530

0

0

15

Locked

15221428

0

0

16

Locked

13136677

0

0

17

Locked

13736993

0

0

18

Locked

15126379

0

0

19

Locked

15191894

0

0

20

Locked

12682468

0

0

21

Locked

239118080

0

0

22

Locked

15840916

0

0

23

Locked

15035799

0

0

24

Locked

22077368

0

0

26

Locked

23488547

0

0

27

Locked

24623861

0

0

28

Locked

23547940

1

0

29

Locked

24033657

0

0

30

Locked

22443751

0

0

31

Locked

248579883

0

0

 

3.1 Downstream channels

Channel

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 channels

Channel ID

Lock Status

RxMER Data (dB)

PLC Power (dBmV)

Correcteds (Active Profile)

Uncorrectables (Active Profile)

33

Locked

 

3.1

64275366

0

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Message 4 of 13
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Re: Hub 4 Inermittent speed

Are you measuring speeds over Ethernet?

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If you think my answer has helped - please provide me with a Kudos rating and mark as Helpful Answer!!
I do not work for Virgin Media - all opinions expressed are of my own and all answers are provided from my own and past experiences.
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Alessandro Volta
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Re: Hub 4 Intermittent speed

Several of your Downstream Power Levels are too high.

This will need an engineer to put right.

You can either phone in (08:00 is the best time) or wait on here for a few days (6 to 7 days average) until one of the VM Forum Staff comes along.

If you wait on here Do Not bump the thread it will put it further down the VM 'to do list'.

***********************************************************************************************************************************

Mike Robinson
Semi-Retired Aircraft Engineer & Computer Based Training and Learning Designer for many of the world's Military Arms.

My Broadband Ping - Mike Robbo
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Message 6 of 13
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Re: Hub 4 Inermittent speed

Hi

Yes measured over ethernet.

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Message 7 of 13
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Re: Hub 4 Intermittent speed

Mike

Thanks for looking at this, sorry I am new to Virginmedia and fibre. I cannot find any number to call on the VM website. Everything seems to be online guides can you please advise?

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Helpful Answer

Re: Hub 4 Intermittent speed

Text service on 07533051809

150 from Virgin landline.

0345 454 1111 from any other UK  phone

***********************************************************************************************************************************

Mike Robinson
Semi-Retired Aircraft Engineer & Computer Based Training and Learning Designer for many of the world's Military Arms.

My Broadband Ping - Mike Robbo
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Message 9 of 13
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Re: Hub 4 Intermittent speed

Cheers Mike

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Message 10 of 13
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Re: Hub 4 Intermittent speed

Hey @steamyb,

 

Sorry to hear of the issues that you've been having and I can see that you have had some help from the team but they haven't been able to resolve the issues for you.

 

I have looked over your network statistics on our side and can see that you have a problem with modem SNR across all of your channels and some the downstream channels power levels are too high and to resolve this we would need an engineer visit to your home.

 

I have arranged for the appointment and you can find all the information that you need about your appointment on your online account and clicking My Account and Order tracking.

 

Regards

Steven_L

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