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Intermittent large ping spikes - Critical Downstream power level errors on Hub

wiggyweir
Tuning in

Hello All,

Looking for some help with a really annoying issue I'm having on my 1Gbps line with Virgin media, speed is fine but intermittently I am getting huge ping spikes that can sometimes reach over 4000ms (see below)

How I noticed this was being on Discord and the connection dropping out intermittently, it can happen once in 5 minutes or many times in quick succession.

I've ruled out the PC by connecting it to a different connection which does not have the ping spikes.

Screenshot 2024-03-11 200034.png

When logging on to the router, I am seeing quite a few errors on the log page:

You will see that I've rebooted the router a few times and reset but the same errors keep coming back up. These errors have been the same since 8AM this morning 

Time Priority Description

11-03-2024 19:49:23noticeGUI Login Status - Login Success from LAN interface
11-03-2024 19:30:33warningRNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-03-2024 19:30:14noticeREGISTRATION COMPLETE - Waiting for Operational status
11-03-2024 19:30:09warningRNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-03-2024 19:30:08warningREG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-03-2024 19:30:08warningRNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-03-2024 19:30:08warningDynamic Range Window violation
11-03-2024 19:30:03noticeDS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-03-2024 19:29:55warningDHCP WARNING - Non-critical field invalid in response ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-03-2024 19:29:53noticeHonoring MDD; IP provisioning mode = IPv4
11-03-2024 19:29:38criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-03-2024 19:29:38criticalCable Modem Reboot because of - Reboot Timezone Change
11-03-2024 19:26:42criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-03-2024 19:26:33criticalCable Modem Reboot because of - Reboot Factory reset ACS
11-03-2024 19:26:33criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

Would appreciate any help on this as its infuriating me, would these errors be causing the spikes in ping?

 

Thanks in advance all

2 REPLIES 2

Client62
Hero

The ping variations shown are on the LAN side of the network.
What cables / switches etc are between the PC and VM Hub ?
Do you see the same variations if you ping the Hub from another device ?

legacy1
Alessandro Volta

Ping 194.168.4.100

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