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weirdbeard12
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Lag spikes and dropped packets

Could someone take a look and advise please?

Lag spikes increasing over recent months, noticeable when gaming but also some buffering on streaming services.

There was an Email in June about a  network upgrade completion. Everything stable since Virgin replaced SH3 with SH2AC back in 2017.

All connection checked, last router reset around Midnight 13th.

Something feels flaky.


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SH3 Modem Mode - Netgear R7000

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weirdbeard12
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Re: Lag spikes and dropped packets

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

Frequency (Hz)411000000419000000427000000435000000443000000451000000459000000467000000
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)-0.60-0.72-0.84-1.03-1.19-1.25-1.76-1.53
RxMER (dB)36.1736.1735.9735.9736.1736.1735.9735.97
Pre RS Errors10902101249995903864526323153706131
Post RS Errors769580689315826050924496142334291

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SH3 Modem Mode - Netgear R7000

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weirdbeard12
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Re: Lag spikes and dropped packets

Upstream  US-1 US-2 US-3 US-4

Channel Type2.02.02.02.0
Channel ID2134
Frequency (Hz)39400000462000003260000025800000
Ranging StatusSuccessSuccessSuccessSuccess
Modulation64QAM64QAM64QAM64QAM
Symbol Rate (Sym/sec)5120000512000051200005120000
Mini-Slot Size2222
Power Level (dBmV)48.0048.7548.2548.00
T1 Timeouts0000
T2 Timeouts0000
T3 Timeouts4000
T4 Timeouts0000

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SH3 Modem Mode - Netgear R7000

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weirdbeard12
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Re: Lag spikes and dropped packets

Network Log

First TimeLast TimePriorityError NumberDescription
16/07/2021 04:06:17 GMT16/07/2021 04:06:17 GMTError (4)68010300DHCP RENEW WARNING - Field invalid in response v4 option
14/07/2021 21:23:57 GMT14/07/2021 21:23:57 GMTWarning (5)84020200Lost MDD Timeout
14/07/2021 21:23:57 GMT14/07/2021 21:23:57 GMTWarning (5)84020200Lost MDD Timeout
14/07/2021 21:23:57 GMT14/07/2021 21:23:57 GMTWarning (5)84020200Lost MDD Timeout
14/07/2021 21:23:57 GMT14/07/2021 21:23:57 GMTWarning (5)84020200Lost MDD Timeout
14/07/2021 21:23:57 GMT14/07/2021 21:23:57 GMTWarning (5)84020200Lost MDD Timeout
14/07/2021 21:23:57 GMT14/07/2021 21:23:57 GMTWarning (5)84020200Lost MDD Timeout
14/07/2021 21:23:57 GMT14/07/2021 21:23:57 GMTWarning (5)84020200Lost MDD Timeout
14/07/2021 21:23:52 GMT14/07/2021 21:23:52 GMTCritical (3)84000500SYNC Timing Synchronization failure - Loss of Sync
14/07/2021 21:23:52 GMT14/07/2021 21:23:52 GMTCritical (3)84000500SYNC Timing Synchronization failure - Loss of Sync
13/07/2021 22:49:23 GMT13/07/2021 22:49:23 GMTError (4)68000407TOD established
Time Not EstablishedTime Not EstablishedCritical (3)82000200No Ranging Response received - T3 time-out
Time Not EstablishedTime Not EstablishedCritical (3)82000200No Ranging Response received - T3 time-out
Time Not EstablishedTime Not EstablishedCritical (3)82000200No Ranging Response received - T3 time-out
Time Not EstablishedTime Not EstablishedCritical (3)82000200No Ranging Response received - T3 time-out
Time Not EstablishedTime Not EstablishedNotice (6)84000510Downstream Locked Successfully
13/07/2021 22:26:33 GMT13/07/2021 22:26:33 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
13/07/2021 22:21:48 GMT13/07/2021 22:21:48 GMTWarning (5)66050310Auth Success - Web login successful.

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SH3 Modem Mode - Netgear R7000

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weirdbeard12
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Message 5 of 23
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Re: Lag spikes and dropped packets

https://www.thinkbroadband.com/broadband/monitoring/quality/share/2bf4416d9cf6e96ade780b68394281a1fe... 


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SH3 Modem Mode - Netgear R7000

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Robert_P
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Re: Lag spikes and dropped packets

Hello weirdbeard12

 

Thanks for posting in regards to the connection issues you're experiencing, we appreciate you raising this via the forums and welcome to the community.

 

We've had a look at the connection from our side but the information is limited due to the Hub being in modem mode, that being said there aren't any area issue reported for your area at the moment. If you are still experiencing the issues can you take the Hub out of modem mode so we can see some more details?

 

Rob

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weirdbeard12
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Message 7 of 23
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Re: Lag spikes and dropped packets

Thanks Rob, appreciate you taking a look.

Will take Hub out of modem mode later this evening and post again to update you.


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Beth_G
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Message 8 of 23
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Re: Lag spikes and dropped packets

That would be brilliant, thanks weirdbeard12.

 

Just let us know once you've done that so we can check for you 🙂

 

Beth

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weirdbeard12
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Message 9 of 23
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Re: Lag spikes and dropped packets

Hi Beth

Hub now reset to Router mode.

BQM now reflects new IP address.

https://www.thinkbroadband.com/broadband/monitoring/quality/share/d55749af074a8736e9c196a696e6bf387c... 


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SH3 Modem Mode - Netgear R7000

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Beth_G
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Message 10 of 23
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Re: Lag spikes and dropped packets

Hi weirdbeard12,

 

Thanks for putting the hub into router mode for us - it looks like the hub has a very long uptime and hasn't been rebooted in a while. Can you please reboot the Virgin Media hub and let us know once you've done that? I will check the status of your connection again from here 🙂

 

Thanks

 

 Beth

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