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M200 Upload stream oddities

Hi,

Over the last week or so I have been experiencing upload stream problems from around 9pm each night until around 2-4am, after which it all returns to normal and works fine all day again until 9pm!

US-2 drops to 32QAM and US-3 drops to 16QAM each night, every time. The power levels are rock solid @ 44-45mV, and all the time downstream is perfectly within spec.

Every time I check service status it comes back green, and up till now if I run the VM tests it also comes back clear.

Today, however, it stated:

We have detected an issue that maybe affecting your broadband and TV video on demand services

What does this mean?

  • This issue is caused by interference on our network impacting multiple customers in your area.
  • This will cause intermittent speeds and performance may vary at different times.

It also states that 'Whilst we investigate the issue in your area here's some checks you can do which may resolve your issue.'

Does this mean someone is actually going to investigate, or is it just a generic message to reassure customers?

Also, could this be down to over-utilisation at these times? Seems a little late in the day for peak time to me. 

When things 'drop out' there are no network log entries at all, but several T3 errors when the streams 'fix' themselves.

I'll attach the network log below, no real point with the upstream and downstream unless anyone thinks it'll help, though I can post the 'broken' upstream when it happens later.

Any thoughts or suggestions will be appreciated.

Network Log

First TimeLast TimePriorityError NumberDescription
09/08/2020 03:48:34 GMT09/08/2020 03:48:34 GMTCritical (3)82000200No Ranging Response received - T3 time-out
09/08/2020 03:20:02 GMT09/08/2020 03:20:02 GMTCritical (3)82000200No Ranging Response received - T3 time-out
09/08/2020 02:17:20 GMT09/08/2020 02:17:20 GMTCritical (3)82000200No Ranging Response received - T3 time-out
09/08/2020 00:21:26 GMT09/08/2020 00:21:26 GMTCritical (3)82000200No Ranging Response received - T3 time-out
08/08/2020 22:12:10 GMT08/08/2020 22:12:10 GMTCritical (3)82000200No Ranging Response received - T3 time-out
08/08/2020 21:07:42 GMT08/08/2020 21:07:42 GMTWarning (5)66050310Auth Success - Web login successful.
08/08/2020 21:07:34 GMT08/08/2020 21:07:34 GMTWarning (5)90000200CSFR Detect - Expired Content Submitted ; LAN Interface
08/08/2020 21:07:24 GMT08/08/2020 21:07:24 GMTWarning (5)90000200CSFR Detect - Expired Content Submitted ; LAN Interface
08/08/2020 02:09:47 GMT08/08/2020 02:09:47 GMTCritical (3)82000200No Ranging Response received - T3 time-out
08/08/2020 01:52:39 GMT08/08/2020 01:52:39 GMTCritical (3)82000200No Ranging Response received - T3 time-out
08/08/2020 00:32:49 GMT08/08/2020 00:32:49 GMTCritical (3)82000200No Ranging Response received - T3 time-out
08/08/2020 00:02:42 GMT08/08/2020 00:02:42 GMTCritical (3)82000200No Ranging Response received - T3 time-out
07/08/2020 23:41:29 GMT07/08/2020 23:41:29 GMTCritical (3)82000200No Ranging Response received - T3 time-out
07/08/2020 22:12:08 GMT07/08/2020 22:12:08 GMTCritical (3)82000200No Ranging Response received - T3 time-out
07/08/2020 06:56:06 GMT07/08/2020 06:56:06 GMTError (4)68000407TOD established
Time Not EstablishedTime Not EstablishedNotice (6)84000510Downstream Locked Successfully
07/08/2020 02:02:52 GMT07/08/2020 02:02:52 GMTCritical (3)82000200No Ranging Response received - T3 time-out
06/08/2020 22:09:07 GMT06/08/2020 22:09:07 GMTError (4)68000407TOD established
Time Not EstablishedTime Not EstablishedCritical (3)82000200No Ranging Response received - T3 time-out
Time Not EstablishedTime Not EstablishedNotice (6)84000510Downstream Locked Successfully
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Re: M200 Upload stream oddities

The upstream (both broken and unbroken) will probably help the forum staff give best possible advice on next steps. 

From the look of that log, you've got a Hub 4?  Experience amongst the VM community is rather scarce on Hub 4 problem solving, but if you've got one on an M200 connection that suggests there's utilisation problems in the area that may/may not also be relevant.

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Re: M200 Upload stream oddities

Hi Andruser,

Thanks for replying. It's actually an old SuperHub 2 I've had since around 2013 or so.

Here's the current upstream, I've not rebooted for a few days hence the multiple T3 errors

Upstream  US-1 US-2 US-3 US-4

Channel Type2.02.02.02.0
Channel ID6785
Frequency (Hz)39400000326000002580000046200000
Ranging StatusSuccessSuccessSuccessSuccess
Modulation64QAM64QAM64QAM64QAM
Symbol Rate (Sym/sec)5120000512000051200005120000
Mini-Slot Size2222
Power Level (dBmV)44.7544.5044.7545.00
T1 Timeouts0000
T2 Timeouts0000
T3 Timeouts01100
T4 Timeouts0000

 

Downstream  DS-1 DS-2 DS-3 DS-4 DS-5 DS-6 DS-7 DS-8

Frequency (Hz)410250000418250000426250000434250000442250000450250000458250000466250000
Lock Status(QAM Lock/FEC Sync/MPEG Lock)LockedLockedLockedLockedLockedLockedLockedLocked
Channel ID12345678
Modulation256QAM256QAM256QAM256QAM256QAM256QAM256QAM256QAM
Symbol Rate (Msym/sec)6.9520006.9520006.9520006.9520006.9520006.9520006.9520006.952000
Interleave DepthI=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
Power Level (dBmV)4.764.774.724.994.935.185.225.13
RxMER (dB)36.8437.0937.0937.0937.0937.6437.6437.64
Pre RS Errors1812580601576637381382330428
Post RS Errors00000000
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Re: M200 Upload stream oddities

OK, so it dropped out just after 9, right on time... no log entries again...

Upstream  US-1 US-2 US-3 US-4

Channel Type2.02.02.02.0
Channel ID6785
Frequency (Hz)39400000326000002580000046200000
Ranging StatusSuccessSuccessSuccessSuccess
Modulation64QAM32QAM16QAM64QAM
Symbol Rate (Sym/sec)5120000512000051200005120000
Mini-Slot Size2222
Power Level (dBmV)44.7544.7544.9645.00
T1 Timeouts0000
T2 Timeouts0000
T3 Timeouts01100
T4 Timeouts000

0

 

Downstream  DS-1 DS-2 DS-3 DS-4 DS-5 DS-6 DS-7 DS-8

Frequency (Hz)410250000418250000426250000434250000442250000450250000458250000466250000
Lock Status(QAM Lock/FEC Sync/MPEG Lock)LockedLockedLockedLockedLockedLockedLockedLocked
Channel ID12345678
Modulation256QAM256QAM256QAM256QAM256QAM256QAM256QAM256QAM
Symbol Rate (Msym/sec)6.9520006.9520006.9520006.9520006.9520006.9520006.9520006.952000
Interleave DepthI=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
Power Level (dBmV)4.884.854.875.095.065.315.325.24
RxMER (dB)36.8437.0937.0937.0937.3637.3637.6437.36
Pre RS Errors1985888241739691423406368467
Post RS Errors00000000

 

Network Log

First TimeLast TimePriorityError NumberDescription
09/08/2020 03:48:34 GMT09/08/2020 03:48:34 GMTCritical (3)82000200No Ranging Response received - T3 time-out
09/08/2020 03:20:02 GMT09/08/2020 03:20:02 GMTCritical (3)82000200No Ranging Response received - T3 time-out
09/08/2020 02:17:20 GMT09/08/2020 02:17:20 GMTCritical (3)82000200No Ranging Response received - T3 time-out
09/08/2020 00:21:26 GMT09/08/2020 00:21:26 GMTCritical (3)82000200No Ranging Response received - T3 time-out
08/08/2020 22:12:10 GMT08/08/2020 22:12:10 GMTCritical (3)82000200No Ranging Response received - T3 time-out
08/08/2020 21:07:42 GMT08/08/2020 21:07:42 GMTWarning (5)66050310Auth Success - Web login successful.
08/08/2020 21:07:34 GMT08/08/2020 21:07:34 GMTWarning (5)90000200CSFR Detect - Expired Content Submitted ; LAN Interface
08/08/2020 21:07:24 GMT08/08/2020 21:07:24 GMTWarning (5)90000200CSFR Detect - Expired Content Submitted ; LAN Interface
08/08/2020 02:09:47 GMT08/08/2020 02:09:47 GMTCritical (3)82000200No Ranging Response received - T3 time-out
08/08/2020 01:52:39 GMT08/08/2020 01:52:39 GMTCritical (3)82000200No Ranging Response received - T3 time-out
08/08/2020 00:32:49 GMT08/08/2020 00:32:49 GMTCritical (3)82000200No Ranging Response received - T3 time-out
08/08/2020 00:02:42 GMT08/08/2020 00:02:42 GMTCritical (3)82000200No Ranging Response received - T3 time-out
07/08/2020 23:41:29 GMT07/08/2020 23:41:29 GMTCritical (3)82000200No Ranging Response received - T3 time-out
07/08/2020 22:12:08 GMT07/08/2020 22:12:08 GMTCritical (3)82000200No Ranging Response received - T3 time-out
07/08/2020 06:56:06 GMT07/08/2020 06:56:06 GMTError (4)68000407TOD established
Time Not EstablishedTime Not EstablishedNotice (6)84000510Downstream Locked Successfully
07/08/2020 02:02:52 GMT07/08/2020 02:02:52 GMTCritical (3)82000200No Ranging Response received - T3 time-out
06/08/2020 22:09:07 GMT06/08/2020 22:09:07 GMTError (4)68000407TOD established
Time Not EstablishedTime Not EstablishedCritical (3)82000200No Ranging Response received - T3 time-out
Time Not EstablishedTime Not EstablishedNotice (6)84000510Downstream Locked Successfully
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