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Canbury28
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Intermittent Broadband

Hi for the past 3 weeks my internet connection has been periodically dropping out throughout the day. It is usually only for a matter of seconds but while working at home has inevitably caused disruption to Zoom meetings etc.

I have monitored the signal using Netspot on a laptop positioned 2m away from the Virgin Media router and it shows the signal dropping out about 20 times a day. I have tried all the tips and checks and there is no service issue in my area. This happens even when there is only one device connected in the house and also late at night.

Does anyone know how the signal can be intermittent like this?

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tehwolf
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Re: Intermittent Broadband

is the laptop you're running netspot on connected to the hub via ethernet or wireless? have you done any testing with a device that is connected via ethernet?

post the upstream, downstream and network log from your router back here - browse to http://192.168.0.1 - don't log in, click Router Status and copy/paste the data back here.

set up a BQM too.. 

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Canbury28
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Re: Intermittent Broadband

Will do

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Canbury28
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Re: Intermittent Broadband

Netspot only registering WiFi and doesn't recognise Ethernet connection unfortunately. Upstream and Downstream as below:

DOWNSTREAM

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1339000000-0.737256 qam26
2203000000-4.537256 qam9
3211000000-4.237256 qam10
4219000000-437256 qam11
5227000000-4.437256 qam12
6235000000-4.537256 qam13
7243000000-4.237256 qam14
8251000000-3.537256 qam15
9259000000-2.737256 qam16
10267000000-2.937256 qam17
11275000000-3.237256 qam18
12283000000-2.537256 qam19
13291000000-238256 qam20
14299000000-237256 qam21
15307000000-2.938256 qam22
16315000000-3.437256 qam23
17323000000-2.237256 qam24
18331000000-138256 qam25
19347000000-1.237256 qam27
20355000000-1.938256 qam28
21363000000-1.238256 qam29
22371000000-138256 qam30
23379000000-1.238256 qam31
24387000000-1.537256 qam32

UPSTREAM

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
13940000051512064 qam4
24619998651512064 qam3
35370005851512064 qam2
46030002451512064 qam1
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Canbury28
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Re: Intermittent Broadband

Log:

 

Time Priority Description

07/02/2021 21:50:26noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/02/2021 21:48:34Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/02/2021 21:48:10Warning!LAN login FAILED : Incorrect Username / Password / ConnectionType;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/02/2021 21:32:28noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/02/2021 21:32:14Warning!LAN login FAILED : Incorrect Username / Password / ConnectionType;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/02/2021 21:28:45noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/02/2021 21:26:50Warning!LAN login FAILED : Incorrect Username / Password / ConnectionType;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/02/2021 12:38:50Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/02/2021 09:05:17criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
06/02/2021 15:15:39noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/02/2021 11:26:6criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/02/2021 05:32:8noticeDHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt057-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/02/2021 05:32:8ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/02/2021 06:29:6criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
31/01/2021 18:49:54Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
31/01/2021 18:27:55criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
31/01/2021 17:32:8noticeDHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt057-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

 

 

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tehwolf
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Re: Intermittent Broadband


@Canbury28 wrote:

Netspot only registering WiFi and doesn't recognise Ethernet connection unfortunately. Upstream and Downstream as below:

So, i'm no expert with the power levels / logs, but there are one or two things (i think) that are out of spec - a couple of RCS partial service messages, which could be a concern, but I'll leave that to others to comment on further.. some of the downstream power levels are at the lower end of the scale but still within tolerance. the upstream power levels are above the highest recommended (50). hard to say if these are contributory to the issues you're experiencing tho..  

With regard to your laptop not recognising the ethernet connection.. have you tried a different cable/port? what happens if you connect the cable you have to two of the ports on the hub? the link lights on the two ports should light up, do they? 

edit: oh, and don't forget that BQM...

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Canbury28
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Re: Intermittent Broadband

thanks for your help - will sort BQM and check

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