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Broadband speed regularly unusable?

robbo1984
Joining in

on ‎25-06-2024 06:59

Very often but irregular my broadband connection drops to 0.5mbps and becomes unusable with no connection?

The only way to resolve this is rebooting the router.

I have tried a 60 second pinhole reset, I have tried restoring to defaults in the admin panel.

I do not use the router in modem mode and it is in a location where there is no risk of damage etc.

It maybe worth nothing we had a few power surges the other day although I don't know if this would effect anything?

Hope someone can help

Here are the logs :

Time Priority Description

25-06-2024 06:43:06noticeGUI Login Status - Login Success from LAN interface
25-06-2024 06:23:54warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-06-2024 06:23:53noticeDS profile assignment change. DS Chan ID: 32; Previous Profile: 1 2 3; New Profile: 1 2.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-06-2024 06:23:53criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-06-2024 06:13:19noticeCM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-06-2024 06:12:50noticeREGISTRATION COMPLETE - Waiting for Operational status
25-06-2024 06:12:44warningREG-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;
25-06-2024 06:12:44warningRNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-06-2024 06:12:44warningDynamic Range Window violation
25-06-2024 06:12:38noticeDS 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;
25-06-2024 06:12:30warningDHCP WARNING - Non-critical field invalid in response ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-06-2024 06:12:28noticeHonoring MDD; IP provisioning mode = IPv4
25-06-2024 06:12:10criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-06-2024 06:12:04criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-06-2024 06:12:03criticalCable Modem Reboot because of - Reboot UI
24-06-2024 23:23:54criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
24-06-2024 23:23:48criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
24-06-2024 23:23:47criticalCable Modem Reboot because of - Reboot UI
24-06-2024 21:18:43criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
24-06-2024 21:18:38criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
24-06-2024 21:18:37criticalCable Modem Reboot because of - HW or Power-On Reset
24-06-2024 13:46:08criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
24-06-2024 13:46:01criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
24-06-2024 13:46:01criticalCable Modem Reboot because of - HW or Power-On Reset
23-06-2024 21:49:37criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
23-06-2024 21:49:31criticalCable Modem Reboot because of - Reboot UI
23-06-2024 21:49:31criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
23-06-2024 19:40:06criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
23-06-2024 19:40:00criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
23-06-2024 19:40:00criticalCable Modem Reboot because of - HW or Power-On Reset
21-06-2024 06:04:04criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
21-06-2024 06:04:00criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
21-06-2024 06:03:59criticalCable Modem Reboot because of - HW or Power-On Reset



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4 REPLIES 4

Client62
Alessandro Volta

on ‎25-06-2024 08:17

Given rebooting the VM Hub is not solving the speed issue, perhaps the VM Hub is not the problem.

Next time you have a speed issue,  find out where the speed is being lost ...

Test the service to a Router mode Hub(3/4/5/5x) + your device with the link below.
https://www.samknows.com/realspeed/

Once the test begins click on: Run full test to see all the stats.

The speed at the Hub should reflect your subscription.
The speed any WiFi device draws data at is limited by its data needs and technical abilities.

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robbo1984
Joining in

‎25-06-2024 12:05 - edited ‎25-06-2024 12:38

So it just happened again....

Rebooting the router solves the issue for a few hours and speeds will be normal then all of a sudden the speed reduces and then I have to reboot the router again?

Am i going to need an engineer???

Screenshot 2024-06-25 120021.png

and this is after i reboot the router :

Screenshot 2024-06-25 123721.png

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Gareth_L
Forum Team
Forum Team
In response to robbo1984

on ‎27-06-2024 13:46

Hello robbo1984

Thank you very much for joining our Community.
Can I just apologise for intermittent speeds you're getting
We can run a few tests from here and check on your equipment.
Sadly it's showing a few SNR issues on your downstream channels, Which would be the cause.

I will need to send you a private message to gain account access and arrange for an engineer to attend.
If you can check the envelope top right of your screen that would be great. 
Regards     
Gareth_L
 

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Gareth_L
Forum Team
Forum Team
In response to robbo1984

on ‎01-07-2024 10:04

Hello robbo1984.

Thanks for passing security.

Just wanted to let you know an engineer has been booked. I've sent the date and time by private message.

You can also check your online account here if you need to change the appointment time.

Can you please let me know how the visit goes.

Gareth_L
 

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