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Jitter making things unmanagable

daLich
Joining in

on ‎14-09-2023 20:08

Anyone know the best way to get VM to look at my area and my connection specifically. Jitter is causing mayhem here in the KA11 area, It has been for a while, and its annoying the hell out of me, everything buffers even on ethernet!

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10 REPLIES 10

Client62
Alessandro Volta

on ‎15-09-2023 08:08

To help your cause post some stats showing the Jitter issue.

For a Hub in Router mode...
https://www.samknows.com/realspeed/
Once the test begins click on: Run full test to see all the stats inc Jitter / Latency / Packet Loss etc.

For a Hub in Router or Modem mode...
https://speed.cloudflare.com/

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Client62
Alessandro Volta

on ‎15-09-2023 08:24

Local Service Fault

Check for a fault affecting your street via : 0800 561 0061 - it is an automated service.


HUB Signal Level Checks

Via http://192.168.0.1/ connect to the Hub in Router mode, do not login in, scroll down to "Check router status"     Use http://192.168.100.1/ for a Hub in Modem mode

Using the Hub's "Check router status" tabs check the Downstream and Upstream power levels are in spec.

Downstream Power Levels of -7 to +7 dBmV are preferred, +10dBmV is the max acceptable, with a SNR of 33dB or higher across all DOCSIS 3.0 channels. Rising error counts across many channels is a current service noise fault.

Upstream Power Levels of 35 to 49 dBmV are preferred, with QAM 64 Modulation mode across all four to six DOCSIS 3.0 channels.  Seeing QAM 32/16 is a current service noise fault.

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daLich
Joining in
In response to Client62

on ‎15-09-2023 12:05

e580fb11_1.pnge580fb11_2.png6d5912af_1.png6d5912af_2.png6d5912af_3.png6d5912af_4.png

Here is the output of the down and up stream

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Client62
Alessandro Volta

on ‎15-09-2023 12:46

These figures do not report jitter, but they may hint at the root cause.

The 3.0 Downstream signal levels are above +10 dBmV maximum for normal reliable service.

The 3.1 Downstream channel has logged over 1.6 billion errors.

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daLich
Joining in

on ‎15-09-2023 14:10

So what do I do about this?

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Client62
Alessandro Volta

on ‎15-09-2023 14:38

Post the test results showing Jitter.

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Client62
Alessandro Volta

on ‎15-09-2023 17:08

BQM reports Latency not Jitter.

For a Hub in Router mode...
https://www.samknows.com/realspeed/
Once the test begins click on: Run full test to see all the stats inc Jitter / Latency / Packet Loss etc.

For a Hub in Router or Modem mode...
https://speed.cloudflare.com/

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daLich
Joining in

on ‎22-09-2023 08:03

An engineer has resolved this issue now thanks for the assistance

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