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Consistent Packet Loss since 20th Jan

Hi there,

I've been experiencing some degree of packet loss on my connection since apx 6:45 AM on the 20th of January, and this has persisted since then despite rebooting all of my equipment multiple times over the course of the days since, and the packet loss has since begun to climb higher.

Below is a BQM graph for the 20th, the 100% spike periods are times where the WAN connection has dropped out entirely. 

Here is a BQM graph for the 21st, you can see here that things improved for a few hours, with the packet loss dropping down to 0/1% before performance began to degrade again. 

BQM graph for the 22nd. Packet loss improved around midday again, before climbing up in the afternoon.

Here is the 23rd; packet loss is beginning to remain consistently high. 

And here is a live BQM graph;

Following is my downstream/upstream and log from my Hub2 (VMDG480, Modem Mode).

Frequency (Hz)139000000 Hz147000000 Hz155000000 Hz163000000 Hz171000000 Hz179000000 Hz187000000 Hz195000000 Hz
Lock Status(QAM Lock/FEC Sync/MPEG Lock)LockedLockedLockedLockedLockedLockedLockedLocked
Channel ID12345678
Symbol Rate (Msym/sec)6.9526.9526.9526.9526.9526.9526.9526.952
Interleave DepthI=12I=12I=12I=12I=12I=12I=12I=12
Power Level (dBmV)10.7 dBmV10.1 dBmV9.6 dBmV8.7 dBmV9.8 dBmV9.6 dBmV9.3 dBmV8.4 dBmV
RxMER (dB)41.4 dB41.4 dB40.9 dB40.8 dB41.4 dB41.4 dB41.3 dB40.9 dB



Channel Type2222
Channel ID5346
Frequency (Hz)32600000 Hz46200000 Hz39400000 Hz25800000 Hz
Ranging StatusSuccessSuccessSuccessSuccess
Symbol Rate (Sym/sec)5120000512000051200005120000
Mini-Slot Size64646464
Power Level (dBmV)38.3 dBmV38.8 dBmV38.3 dBmV37.8 dBmV
T1 Timeouts0000
T2 Timeouts0000
T3 Timeouts10101010
T4 Timeouts35353535


Network Log

First TimeLast TimePriorityError NumberDescription
 23/00/2021 15:36:30  23/00/2021 15:36:30  Critical (3)  82000400  Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; 
 23/00/2021 15:35:57  23/00/2021 15:35:57  Critical (3)  82000700  Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; 
 23/00/2021 12:34:02  23/00/2021 12:34:02  Critical (3)  82000500  Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; 


Thank you in advance for any time you spend looking into this.

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Very Insightful Person
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Message 2 of 3
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Re: Consistent Packet Loss since 20th Jan

Downstream power's looking a touch too high, and upstream is showing a lot of timeouts.  I'll flag this for the forum staff to advise, see what they can come up with.

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Forum Team
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Message 3 of 3
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Helpful Answer

Re: Consistent Packet Loss since 20th Jan

Thanks for your post and for reaching out to the Community Forums, XLLC3, 


Sorry to hear that you have been having connectivity issues. I've run a remote diagnostic and it has identified that you may be impacted by an ongoing SNR fault in the area as per below:

  • Reference Number:F008752681  
  • Estimated end date:29 JAN 2021 09:15


Corey C