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bikertect
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M100 very slow upload speeds (<1mb)

Hello,

My daytime upload speeds have dropped typically below 1mb/s on a M100 connection. I'm loathe to pay extra to upgrade to the M350 if I'm still only likely to get <1%, or 3mb/s upload, so I am hoping someone can assist.

As with many other people at the moment, we have two people WFH every day, simple tasks are becoming very difficult, productivity is very low, and audio / video upload often makes zoom etc unworkable.

  • No known faults in my area (Virgin website status check)
  • Location London N5 2**
  • Hub diagnostic shows no faults.
  • Download speeds typically 60:90mb/s, occasionally >100mb/s.
  • Upload speed has historically been up to 8/9mb/s with no hardware changes.
  • Computer running Ookla test is connected by ethernet via a gigabyte switch.
  • Other hardwired machines running Ookla test return same result.
  • WiFi is not a factor, but returns very similar speeds via mobile devices.
  • Hub 3.0 installed Feb 2018
  • Internal cable connections are all good, but the box on the outside wall is a bit of a mess from previous installs
  • Upstream bonded channels typically ~4.8 dBmV each which from (an uninformed layman) Google search I believe should be about 10x higher power?

Any community / technician assitance gratefully recieved to avoid sitting on hold for hours.

Thanks in advance,

Roger

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-tony-
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Message 2 of 10
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Re: M100 very slow upload speeds (<1mb)

post all the stats

log into hub3 - 192.168.0.1 [or 192.168.100.1 if in modem mode] - DON'T SIGN IN, click - click router status [centre of screen] - and post the downstream and upstream figures - to see those press on the grey buttons/boxes labeled - upstream - downstream

if its an earlier hub button is top right

4.8 is ok - you are on a hub3 i assume - theres a bug that puts the decimal point in the wrong place so 4.0  += 48 which is ok if all cnallels are that

are you testing wired or via wifi

____________________

Tony
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Re: M100 very slow upload speeds (<1mb)

Hi Tony, thanks for looking at this, and so quickly.

Hub 3.0 yes. I've tested with multiple wired/wireless devices: very little difference between wired/wireless - the actual network wifi strength and speed is excellent for intranet (NAS drive access) and independent of the internet connection (I'm using a TP-Link Deco M9 mesh for wifi)

Upstream:

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

1603001564.85512064 qam1
2393999944.75512064 qam4
3537000514.775512064 qam2
4461998384.75512064 qam3

 

Downstream:

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

1299000000035256 qam21
2139000000434256 qam1
31470000003.234256 qam2
41550000002.734256 qam3
51630000002.534256 qam4
6171000000234256 qam5
71790000001.434256 qam6
8187000000134256 qam7
91950000000.734256 qam8
102030000000.434256 qam9
11211000000034256 qam10
12219000000034256 qam11
13227000000-0.434256 qam12
14235000000-0.734256 qam13
15243000000-1.434256 qam14
16251000000-134256 qam15
17259000000-0.735256 qam16
18267000000-0.734256 qam17
19275000000-0.535256 qam18
20283000000-0.735256 qam19
21291000000-0.235256 qam20
22307000000-0.235256 qam22
23315000000-0.435256 qam23
24323000000035256 qam24
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-tony-
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Message 4 of 10
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Re: M100 very slow upload speeds (<1mb)

nothing really stands out there - post the second screen from the downstream and the network log

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Tony
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bikertect
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Re: M100 very slow upload speeds (<1mb)

Network log (MAC addresses redacted)
Note the 1970 entry is exactly as it appears.

Time

Priority

Description

26/05/2020 15:47:20

notice

LAN login Success;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED];CM-QOS=1.1;CM-VER=3.0;

01/01/1970 00:01:31

critical

No Ranging Response received - T3 time-out;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED];CM-QOS=1.1;CM-VER=3.0;

26/05/2020 15:39:51

notice

LAN login Success;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED];CM-QOS=1.1;CM-VER=3.0;

22/05/2020 15:14:8

critical

No Ranging Response received - T3 time-out;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED];CM-QOS=1.1;CM-VER=3.0;

22/05/2020 13:14:12

Warning!

RCS Partial Service;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED];CM-QOS=1.1;CM-VER=3.0;

22/05/2020 13:12:45

critical

SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED];CM-QOS=1.1;CM-VER=3.0;

22/05/2020 13:12:45

Warning!

RCS Partial Service;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED];CM-QOS=1.1;CM-VER=3.0;

22/05/2020 13:12:45

critical

SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED]:70;CM-QOS=1.1;CM-VER=3.0;

22/05/2020 12:52:39

Warning!

RCS Partial Service;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED]:70;CM-QOS=1.1;CM-VER=3.0;

22/05/2020 12:52:39

critical

SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED]:70;CM-QOS=1.1;CM-VER=3.0;

22/05/2020 12:52:38

Warning!

RCS Partial Service;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED]:70;CM-QOS=1.1;CM-VER=3.0;

22/05/2020 12:52:37

Warning!

Lost MDD Timeout;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED]:70;CM-QOS=1.1;CM-VER=3.0;

22/05/2020 12:52:32

critical

SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED]:70;CM-QOS=1.1;CM-VER=3.0;

22/05/2020 12:52:32

Warning!

RCS Partial Service;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED]:70;CM-QOS=1.1;CM-VER=3.0;

22/05/2020 12:52:32

critical

SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED]:70;CM-QOS=1.1;CM-VER=3.0;

22/05/2020 12:52:32

Warning!

RCS Partial Service;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED]:70;CM-QOS=1.1;CM-VER=3.0;

22/05/2020 09:25:3

notice

LAN login Success;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED]:70;CM-QOS=1.1;CM-VER=3.0;

22/05/2020 09:01:57

critical

No Ranging Response received - T3 time-out;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED]:70;CM-QOS=1.1;CM-VER=3.0;

22/05/2020 09:01:56

Warning!

B-INIT-RNG Failure - Retries exceeded;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED]:70;CM-QOS=1.1;CM-VER=3.0;

22/05/2020 08:56:57

critical

No Ranging Response received - T3 time-out;CM-MAC=[REDACTED];CMTS-MAC=[REDACTED]:70;CM-QOS=1.1;CM-VER=3.0;

 

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bikertect
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Message 6 of 10
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Re: M100 very slow upload speeds (<1mb)

Second table on Upstream tab:

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

 

Second table on Downstream tab:

Channel

Locked Status

RxMER (dB)

Pre RS Errors

Post RS Errors

1

Locked

35.5

122

0

2

Locked

34.3

4338

0

3

Locked

33.9

5199

0

4

Locked

33.8

6362

0

5

Locked

34.3

2892

0

6

Locked

34.4

3335

0

7

Locked

33.9

4574

0

8

Locked

33.9

5950

0

9

Locked

33.9

5522

0

10

Locked

33.9

7382

0

11

Locked

33.9

4761

0

12

Locked

34.3

2368

0

13

Locked

34.4

2546

0

14

Locked

34.3

3659

0

15

Locked

33.8

5705

0

16

Locked

34.3

1473

0

17

Locked

34.9

612

0

18

Locked

35

343

0

19

Locked

35

216

0

20

Locked

35

268

0

21

Locked

35.5

126

0

22

Locked

35.7

84

0

23

Locked

35.7

49

0

24

Locked

35.7

33

0

 

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Emily_G
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Message 7 of 10
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Re: M100 very slow upload speeds (<1mb)

Thank you for your post Bikertect.

 

There seems to be a known area fault which may be affecting your services, this is related to congestion.

 

I'll include all the information on this below for you:

Reference: F008024637

Estimated repair date: 24 JUN 2020 09:00

 

Thank you, Emily.

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Re: M100 very slow upload speeds (<1mb)

Rofl, I love the known fault in his area, do you mean hes being throttled?

I pay for 500 and i often got ~300, I complained on here and I had a thread full of opinions on my ethernet cable. I got a speedtest result last night of 531mbps down 1.4mbps up, this is absolutely ridiculous, how am I supposed to have work meetings?

I am actually considering signing up to a BT VDSL connection and load balance the upload traffic over to the terrible BT line they provide, I was getting 40mbps up with you guys pre-covid.... Is Gig1 expanding still during this???

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gary_dexter
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Re: M100 very slow upload speeds (<1mb)

No he’s not being throttled. No one is. 


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bikertect
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Message 10 of 10
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Re: M100 very slow upload speeds (<1mb)

Thanks for the response Emily, and for engaging. With this response at least I know that something is being done to resolve, and this won't be a permanent condition.

As some customer feedback for you to please pass on, it would be empowering for subscribers if, when using the VM website to check for "known faults in my area", any known faults which have a fault code and targeted resolution are described and listed, rather than a cheerful "no known faults" on the website pushing people into forums to hope that someone might be able to help them. I can't be alone in having this issue, and being frustrated with denial of reality on the VM website.

Roger

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