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Recently having an extremely slow upload (1-5mbps) on a M350 connection

this has lasted a few weeks - gone from getting steady 35mbps up to between 2-5mbps. have called support several times, but have had to be on hold more than an hour both times and they haven't been able to help.

everything's wired, and am getting this same issue while directly connected to the router in router mode, though i usually use it in modem mode for obvious reasons.

this was my info before a long (5 minute pause) restart - can see a couple of channels that i think are out of modulation, and a bunch of T3 timeouts, but then this had been up for about a week or so.

Upstream bonded channels

Channel

Frequency (Hz)

Power (dBmV)

Symbol Rate (ksps)

Modulation

Channel ID

1

39400051

42

5120

16 qam

4

2

46200035

42.5

5120

32 qam

3

3

25799854

40.8

5120

16 qam

6

4

32599985

41.5

5120

64 qam

5

 

Upstream bonded channels

Channel

Channel Type

T1 Timeouts

T2 Timeouts

T3 Timeouts

T4 Timeouts

1

ATDMA

0

0

1

0

2

ATDMA

0

0

5

0

3

ATDMA

0

0

424

0

4

ATDMA

0

0

1

0

 

here's the same info after restarting and leaving unplugged for five minutes, as seems to be the regular suggestion:

Upstream bonded channels

Channel

Frequency (Hz)

Power (dBmV)

Symbol Rate (ksps)

Modulation

Channel ID

1

39400165

42

5120

16 qam

4

2

46200000

42.3

5120

32 qam

3

3

25800483

41

5120

16 qam

6

4

32600126

41.5

5120

64 qam

5

 

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

1

0

4

ATDMA

0

0

0

0

 

and it might be useful to share my broadband quality thing, so here it is. i only signed up today and then restarted the router a couple of times, so it's not going to be very useful for a while, apologies.

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Alessandro Volta
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Your Upstream Channels are at the wrong modulation, they...

Your Upstream Channels are at the wrong modulation, they should all be at 64 QAM.

Can you post your Downstream stats and Network Log please.

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

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

My Broadband Ping - 26_Aug_2020
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Alessandro Volta
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Re: Your Upstream Channels are at the wrong modulation, they...

Have you checked the 'Check Service Status' at the top of the page ?

If nothing is showing try phoning 0800 561 0061, this will tell you of more local issues that may be affecting your district. Be aware that it isn't a manned line.

Go round all the accessible internal and external co-ax connections and ensure that they are finger tight.

If everything above is OK we need do some more troubleshooting; to start with …

Disable any VPNs that you have running.

Can you set up a Broadband Quality Monitor (BQM) at thinkbroadband.com - this will give you an insight into what is happening with the signal at the other side of the Hub, it will take a few hours to get any kind of trend showing although you should post the link straight away.

Post a 'Live Link' to your BQM on here.

Instructions for posting BQM Link

Under your BQM graph are two links in red.

Click the lower link (Share Live Graph) then click generate.

Copy the text in the Direct Link box, beware, there may be more text than you can see.

On here click the Link icon (2 links chain to the left of the camera icon)

In the URL box paste the link you copied and in the ‘text to display’ box write My BQM then click OK - you can post the link straight away.

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

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

My Broadband Ping - 26_Aug_2020
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Re: Your Upstream Channels are at the wrong modulation, they...

that phone number has a generic "we're working on a really complex issue" error message, so i suppose that's probably it for the troubleshooting you can give me, i guess i'm at the whim of virginmedia. but just in case not, here's the other info you requested:

Channel

Frequency (Hz)

Power (dBmV)

SNR (dB)

Modulation

Channel ID

1

331000000

5.4

38

256 qam

25

2

203000000

6

38

256 qam

9

3

211000000

5.6

38

256 qam

10

4

219000000

5.8

38

256 qam

11

5

227000000

5.9

38

256 qam

12

6

235000000

5.8

38

256 qam

13

7

243000000

5.5

38

256 qam

14

8

251000000

5.3

38

256 qam

15

9

259000000

5.1

38

256 qam

16

10

267000000

5

38

256 qam

17

11

275000000

4.1

38

256 qam

18

12

283000000

3.5

38

256 qam

19

13

291000000

4.1

38

256 qam

20

14

299000000

5

38

256 qam

21

15

307000000

5.1

38

256 qam

22

16

315000000

5.3

38

256 qam

23

17

323000000

5.4

38

256 qam

24

18

339000000

5.5

38

256 qam

26

19

347000000

5.9

38

256 qam

27

20

355000000

5.6

38

256 qam

28

21

363000000

5.8

38

256 qam

29

22

371000000

5.5

38

256 qam

30

23

379000000

5.3

38

256 qam

31

24

387000000

5.1

38

256 qam

32

 

Downstream bonded channels

Channel

Locked Status

RxMER (dB)

Pre RS Errors

Post RS Errors

1

Locked

38.6

12

0

2

Locked

38.9

10

0

3

Locked

38.6

16

0

4

Locked

38.6

6

0

5

Locked

38.6

19

0

6

Locked

38.6

18

0

7

Locked

38.6

9

0

8

Locked

38.9

4

0

9

Locked

38.6

7

0

10

Locked

38.6

9

0

11

Locked

38.9

23

0

12

Locked

38.6

4

12

13

Locked

38.6

12

0

14

Locked

38.6

12

0

15

Locked

38.9

6

0

16

Locked

38.6

7

0

17

Locked

38.9

10

0

18

Locked

38.9

9

0

19

Locked

38.6

10

0

20

Locked

38.9

13

0

21

Locked

38.9

6

0

22

Locked

38.9

11

0

23

Locked

38.6

12

0

24

Locked

38.9

12

0

 

https://www.thinkbroadband.com/broadband/monitoring/quality/share/28df0aee4e12c625315c8ca3cfde7047c3... 

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Re: Your Upstream Channels are at the wrong modulation, they...

and network log, as that wouldn't fit:

 

Time

Priority

Description

06/11/2020 18:40:39

notice

LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

06/11/2020 18:26:50

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

06/11/2020 18:17:55

notice

LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

06/11/2020 18:11:37

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

06/11/2020 18:07:14

notice

LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

06/11/2020 17:43:32

notice

LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

06/11/2020 01:45:38

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

06/11/2020 01:29:49

Error

DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

02/11/2020 14:30:43

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

02/11/2020 13:29:48

Error

DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

30/10/2020 04:35:27

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

30/10/2020 04:24:6

Error

DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

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Re: Your Upstream Channels are at the wrong modulation, they...

You can see from your Network Log that your Hub is struggling to maintain a connection.

You will need an engineer to things 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 - 26_Aug_2020