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gbmurs
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Intermittent Broadband - packet drops

Hi

I have my VirginMedia Hub3.0 running in modem mode and over the past 48 hours I've been experiencing intermittent broadband connectivity. I have a broadband monitor running between the internet and the hub and it definitely looks like the packet drops are on the internet facing side. Here's the broadband monitor and the stats from the hub. According to Virgin there are no local faults in my area that would be affecting the connectivity. Any suggestions welcome.

Thanks

https://www.thinkbroadband.com/broadband/monitoring/quality/share/8e34ce92f6a6df7933aa67fc38e9e8466f...

Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

1338750000-0.940256 qam26
2202750000-2.240256 qam9
3210750000-240256 qam10
4218750000-1.938256 qam11
5226750000-2.738256 qam12
6234750000-2.240256 qam13
7242750000-2.738256 qam14
8250750000-2.238256 qam15
9258750000-240256 qam16
10266750000-240256 qam17
11274750000-2.240256 qam18
12282750000-1.240256 qam19
13290750000-1.440256 qam20
14298750000-1.440256 qam21
15306750000-140256 qam22
16314750000-1.238256 qam23
17322750000-1.940256 qam24
18330750000-140256 qam25
19346750000-1.440256 qam27
20354750000-1.240256 qam28
21362750000-1.240256 qam29
22370750000-240256 qam30
23378750000-1.540256 qam31
24386750000-1.540256 qam32



Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1Locked40.300
2Locked40.3170
3Locked40.3440
4Locked38.6360
5Locked38.9350
6Locked40.9180
7Locked38.9140
8Locked40.380
9Locked40.3130
10Locked40.370
11Locked40.330
12Locked40.980
13Locked40.350
14Locked40.380
15Locked40.350
16Locked38.980
17Locked40.310
18Locked40.980
19Locked40.360
20Locked40.380
21Locked40.960
22Locked40.340
23Locked40.980
24Locked40.3110

 

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

14620000046.5512064 qam3
23260000046.8512064 qam5
33940000047.3512064 qam4
45370000047.3512064 qam2



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA00470
2ATDMA00110
3ATDMA00100
4ATDMA0060

 

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gbmurs
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Re: Intermittent Broadband - packet drops

And the log messages

 

Network Log

Time Priority Description

14/07/2021 10:44:27noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:38:9criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:38:9criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:37:49criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:37:49criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:37:9criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:37:9criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:36:49criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:36:49criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:35:9criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:35:9criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:30:50criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:30:49criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:30:30criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:30:29criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:24:30criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:24:30criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:24:10criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:24:10criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2021 10:23:50criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
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lotharmat
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Re: Intermittent Broadband - packet drops

There are an awful lot of T3 timeouts - but they can be cumulative - when was the hub last rebooted?

Also - have you checked the freephone faults number?

0800 561 0061 - Much more up to date and granular!



------------------------------------------------------------------
Hub 3 - Modem Mode - TP-Link Archer C7

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gbmurs
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Re: Intermittent Broadband - packet drops

Hi

Thanks for the reply. The hub was rebooted last night, uptime is about 16 hours. And according to the service status line there are no local faults in the area.

Thanks

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Tudor
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Re: Intermittent Broadband - packet drops

Looks to me like noise ingress on the upstream. Also the red at the top of the graph like that can be indicative of VM working on the network overnight. Call customer services and report the problem.


Tudor
There are 10 types of people: those who understand binary and those who don't and F people out of 10 who do not understand hexadecimal c1a2a285948293859940d9a49385a2
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