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jsbirch
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Sub-10 Mbps speeds on M200

Hi there,

We've been experiencing very slow speeds over the last 3-4 weeks, often times under 10 Mbps and nearly always under 50 Mbps, despite previously enjoying speeds of 150 Mbps plus on an M200 package.

An engineer visited on Monday and replaced the white cable, which seemed to boost the speed to normal levels for a couple of hours at most, and now despite following the guides on the website, it seems slower than ever. I've rebooted, reset etc as suggested. 

Info from router status below.

Downstream bonded channels

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

11387500000.934256 qam1
2146750000-0.234256 qam2
3154750000-0.533256 qam3
4162750000-1.233256 qam4
5170750000-3.233256 qam5
6178750000-234256 qam6
7186750000-1.734256 qam7
8194750000-2.234256 qam8
9202750000-1.733256 qam9
10210750000-333256 qam10
11226750000-1.527256 qam12
12234750000-2.534256 qam13
13242750000-534256 qam14
14250750000-3.534256 qam15
15258750000-3.734256 qam16
16266750000-3.234256 qam17
17274750000-1.534256 qam18
18282750000-3.234256 qam19
19290750000-3.234256 qam20
20298750000-0.535256 qam21
21306750000-1.735256 qam22
22314750000-0.735256 qam23
233227500001.535256 qam24



Downstream bonded channels

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

1Locked34.3130354742290
2Locked34.31325704831
3Locked33.988503402
4Locked33.881211216
5Locked33.852655946177
6Locked34.390933988169
7Locked34.440160160174
8Locked34.32139027202
9Locked33.93393235172
10Locked33.83800670120
11Locked2725668815887376207
12Locked34.310104101
13Locked34.39917202
14Locked34.49042147
15Locked34.9392997
16Locked34.4479984
17Locked34.997814
18Locked34.4364381
19Locked34.91991103
20Locked3572672
21Locked35.550676
22Locked3565263
23Locked35.71710

 

Upstream bonded channels

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

1603000005.1512064 qam1
2393999855.1512064 qam4
3462001465.1512064 qam3
4537000295.1512064 qam2



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA0000

 

Network Log

Time Priority Description

02/08/2020 12:24:14Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:24:14Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:23:49Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:23:46Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:23:30Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:23:28Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:22:43Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:22:43Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:22:20Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:22:20Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:21:48Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:21:48Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:21:40Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:21:40Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:21:6Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:21:6Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:20:56Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:20:52Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:20:34Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 12:20:32Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
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MikeRobbo
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Alessandro Volta
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Message 2 of 10
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Re: Sub-10 Mbps speeds on M200

Are you testing with Wi-Fi or ethernet connected device ?

Ethernet is always the best.

You have quite a lot of Post RS Errors.

Also your Upstream Power Levels are at the max setting.

Reboot the Hub and see if those errors go back to zero and if the power levels reduce.


*********************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************
BT Smart Hub 2 with 70Mbs Download,18Mbs Upload, 9.17ms Latency & 0.35ms Jitter.
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jbrennand
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Re: Sub-10 Mbps speeds on M200

EDIT: Mike is quick out of the blocks today 😎

You have big connection issues - try this first.

First do a quick check that all of your coax cable connections are in nice and "finger" tight - at the Hub and wall box and also at any splitters/attenuators/etc. Ensure there are no “unterminated cable loose ends. Disconnect all the connections and reconnect to be sure. Also check that the internal wiring is ok with no kinking or chaffing, check that all looks good with the outside cabling and wall box.

Then do a Hub “pinhole reset” - with the Hub "switched on" throughout, press pin in firmly and hold it there for 60 seconds – release the pin then leave it 10’ to stabilise. But, make sure the 2 passwords on the Hub sticker are still there and legible first !

Also, in the meantime, (if you haven’t already) set up a free “Broadband Quality Monitor” to continually monitor the state of your connection and record any true network dropouts - it will thus allow you to differentiate between those and simple wifi dropouts. It does it 24/7/365 and it keeps a visual record of any/all of your network disconnections, useful data to have to match to the Network logs (in your Hub settings) and also in discussions with VM - note it will take a few hours to start seeing a sensible picture - post up the “link” when you have the first 24h period.

https://www.thinkbroadband.com/broadband/monitoring/quality

See if that helps - if not come back here


--------------------
John
--------------------

I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router +2 Airport Express's. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.
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jsbirch
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Re: Sub-10 Mbps speeds on M200

Thank you both Mike and John for such speedy responses.

I'm afraid I'm testing with Wi-Fi - with my flatmates away on holiday, the only device I have in the house with an Ethernet port is a work device that I wouldn't be able to use. I'm using my personal laptop, which doesn't have an Ethernet port.

I've checked all our coax cable connections, and they seem fine. Nothing loose or kinked. I think it was this cable that the engineer replaced earlier this week, from the look of it.

Which should I do first - a pinhole reset or a reboot? And would you like me to resend the logs afterwards? 

Jarrod

Edit: I have set up a BQM. Will send a link when I have the first 24h.

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MikeRobbo
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Message 5 of 10
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Re: Sub-10 Mbps speeds on M200

It is up to you, a reset is a reboot on steroids - it completely resets everything.

Personally I would reboot, it is quicker and saves redoing any setting up that may have been done earlier.


*********************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************
BT Smart Hub 2 with 70Mbs Download,18Mbs Upload, 9.17ms Latency & 0.35ms Jitter.
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jbrennand
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Re: Sub-10 Mbps speeds on M200

For future reference, get a Cat6 ethernet cable and a RJ45-ethernet adapter for whatever port your laptop does have - they are relatively cheap and good to have tucked in your tech drawer.

I am Mac's only and have ethernet adapters for USB3, USBc, and Thunderbolt to cover all machines - can get Lightning ones too... for an iPhone 🙂


--------------------
John
--------------------

I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router +2 Airport Express's. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.
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jsbirch
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Re: Sub-10 Mbps speeds on M200

You won me over with "quicker"! Although having done a reset earlier in the week, happy to do another as I doubt we've made any setting changes to lose.

Here's what it shows now.

Downstream bonded channels

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

11387500000.534256 qam1
2146750000-0.433256 qam2
3154750000-0.733256 qam3
4162750000-1.533256 qam4
5170750000-3.433256 qam5
6178750000-2.233256 qam6
7186750000-1.934256 qam7
8194750000-2.534256 qam8
9202750000-233256 qam9
10210750000-333256 qam10
11226750000-1.924256 qam12
12234750000-2.534256 qam13
13242750000-5.234256 qam14
14250750000-3.934256 qam15
15258750000-3.934256 qam16
16266750000-3.534256 qam17
17274750000-1.934256 qam18
18282750000-3.534256 qam19
19290750000-3.234256 qam20
20298750000-0.735256 qam21
21306750000-235256 qam22
22314750000-135256 qam23
233227500001.235256 qam24



Downstream bonded channels

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

1Locked34.3236119946
2Locked33.99295226
3Locked33.9103629
4Locked33.8199430
5Locked33.8109205625
6Locked33.9227534928
7Locked34.498233229
8Locked34.318531028
9Locked33.81796360
10Locked33.37312427
11Locked24.821144776500910
12Locked34.329425
13Locked34.330129
14Locked34.32420
15Locked34.4650
16Locked34.41430
17Locked34.94521
18Locked34.413627
19Locked34.95125
20Locked34.92727
21Locked351526
22Locked352917
23Locked35.710

 

Upstream bonded channels

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

1603000005.1512064 qam1
2394000005.1512064 qam4
3462000005.1512064 qam3
4537000005.1512064 qam2



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA000

0

 

Network Log

Time Priority Description

02/08/2020 13:24:29Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:24:24criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:22:28Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:20:52Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:17:11Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:17:10Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:16:45Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:16:41Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:16:29Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:16:28Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:15:55Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:15:54Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:15:45Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:15:44Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:15:19Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:15:19Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:15:4Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:15:4Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:14:19Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2020 13:14:16Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

 

Thanks for the suggestion, John. One of those things I know is useful but never seem to have around. A Lightning adapter though...what a time to be alive!

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jbrennand
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Message 8 of 10
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Re: Sub-10 Mbps speeds on M200

Down channel 11 is stuffed - all have too many RS errors - up powers are at the top of the range.

You will need VM input and probably a tech visit as iy=ts probably noise getting in somewhere.


--------------------
John
--------------------

I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router +2 Airport Express's. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.
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jsbirch
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Message 9 of 10
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Re: Sub-10 Mbps speeds on M200

Thanks a lot, John (and Mike). We've booked for an engineer to come this week.

Really appreciate your expert eye and advice - thanks again!

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Anonymous
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Message 10 of 10
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Re: Sub-10 Mbps speeds on M200

The issue is probably linked to upstream levels being too high:

Upstream bonded channels

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

1603000005.1512064 qam1
2394000005.1512064 qam4
3462000005.1512064 qam3
4537000005.1512064 qam2
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