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Wifi Intermittently Dropping

Hello,

Since March I've been experiencing intermittent Wifi dropouts on the Hub 3.0. I don't think there were any issues before, although maybe there was and I'm only noticing this now since I've been working from home since March.

I've tried following some of the other guidance on the boards, including restting the hub as well as disabling the Smart Wifi and splitting the 2.4ghz and 5ghz SSID. Intitally I thought it was the 2.4 GHz that was dropping out but it's actually happening with both.

Anything connected by ethernet is fine, no issues there - just with the Wifi

Are there any other settings I've missed or could try out?

Thanks,
Scott

 

 

Wireless Security Settings.pngWirless Signal Settings.png

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Re: Wifi Intermittently Dropping

The simple logical fix is to invest £70-100 in your own mesh wifi setup - just about anything from a reputable maker is fine so long as the mesh nodes have gigabit ethernet ports on them (otherwise this constrains the aggregate wifi speed), and I'd say that (in ascending order of price) it would be difficult to go wrong with gear from Tenda, TP-Link, Asus and Netgear.  For me, TP-Link hit a sweet spot between capability and price with the Deco M4, but that's a personal choice.

However, are you 100% sure that the ethernet is fine?  If you splashed out the fat end of a hundred quid and it turned out to be a cable problem you might not be too impressed with the advice dispensed here.  I'd suggest that you post your hub's network log, downstream and upstream status data here, and set up a BQM, let that run for 24 hours and post a link to a shared graph.  

If you're sure it is wifi only, and you balk at the idea of spending the money on a mesh system, then might be worth demanding a replacement hub from VM - it's their equipment and their responsibility for it to work.   But the quality of router and wifi from most ISP hubs is pretty weak, because they're cheapskate devices built to old wifi standards for the lowest cost.

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Message 3 of 10
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Re: Wifi Intermittently Dropping

Thanks for your advice.

It definetly is only the Wifi. I have a number of devices connected via ethernet (TiVo, Games Console and Smart TV) and neither of these devices ever seem to drop connection - just the Wifi signal.

I'll look into the BQM as well. In the meantime I've posted Upstream, Downstream and Network Logs (for info, none of it means anything to me!)

Thanks,

Downstream Data.jpg

Network Log.jpg

Upsteam Data.jpg

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Message 4 of 10
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Re: Wifi Intermittently Dropping

If you are sure its just wifi (BQM would just "prove" that) - then Andruser says - the best solution is to put the Hub into modem mode and get a Mesh system or router with/without wireless access points.

--------------------
John
--------------------

My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.
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Message 5 of 10
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Re: Wifi Intermittently Dropping

I set-up the BQM however I'm not really sure what any of it means to be honest. 

The Wifi dropped again today around 11am with the SSID not broadcasting. I noticed on the Hub 3.0 that the green wifi light was on steady for a minute and then it started flashing and then it was fine. Turned on the TV and was able to connect to Netflix so wired connection was OK.  But this is what it seems to do, the wifi seems to disconnect/drop for a few minutes and then comes back online. 

https://www.thinkbroadband.com/broadband/monitoring/quality/share/8941f3b84b12fbddae8caa20f846a8af42... 

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Message 6 of 10
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Re: Wifi Intermittently Dropping

BQM showing packet drops so need more info. Your "images" are as useful as a chocolate teapot for those of us whose eyes are > 20 years old!

Can you repost the stats by copy/paste as “Formatted Text” (not images) include 3 FULL sets of data onto here – 2 pages from the Downstream, 2 from the Upstream, & the Network Logs page. Don't worry too much about the formatting it can be easily read & DON’T include personal data or MAC addresses - blank them out - if you copy/paste the data, the board software will do this for you (you may need to click the "submit" button again.

--------------------
John
--------------------

My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.
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Message 7 of 10
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Re: Wifi Intermittently Dropping

Downstream bonded channels

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

13310000005.140256 qam25
22670000005.940256 qam17
32750000005.640256 qam18
42830000005.843256 qam19
52910000005.940256 qam20
62990000005.643256 qam21
73070000005.340256 qam22
83150000005.140256 qam23
93230000005.440256 qam24
103390000004.640256 qam26
113470000004.640256 qam27
123550000004.540256 qam28
13363000000440256 qam29
143710000003.540256 qam30
153790000003.740256 qam31
163870000003.740256 qam32
173950000003.240256 qam33
18403000000340256 qam34
194110000003.240256 qam35
204190000003.540256 qam36
214270000002.740256 qam37
224350000002.540256 qam38
23443000000340256 qam39
24451000000340256 qam40



Downstream bonded channels

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

1Locked40.332542
2Locked40.34150
3Locked40.96750
4Locked43.312552
5Locked40.911840
6Locked43.315069
7Locked40.318761
8Locked40.9200123
9Locked40.918540
10Locked40.333350
11Locked40.931827
12Locked40.941428
13Locked40.357023
14Locked40.358121
15Locked40.359339
16Locked40.367038
17Locked40.381836
18Locked40.398129
19Locked40.3117530
20Locked40.9123933
21Locked40.9148415
22Locked40.9124127
23Locked40.9152016
24Locked40.3185515
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Message 8 of 10
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Re: Wifi Intermittently Dropping

Upstream bonded channels

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

15370000041.8512064 qam2
23940000040.5512064 qam4
34620000041.3512064 qam3
46030000042.3512064 qam1



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0000
3ATDMA0020
4ATDMA0000
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Message 9 of 10
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Re: Wifi Intermittently Dropping

Network Log

Time Priority Description

14/11/2020 10:14:12noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/11/2020 16:03:38noticeDHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt060-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/11/2020 16:03:38ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
12/11/2020 14:50:37criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
11/11/2020 09:51:17noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
10/11/2020 11:14:40Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
10/11/2020 09:42:23criticalReceived 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;
10/11/2020 09:41:31Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
10/11/2020 09:41:27criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
10/11/2020 09:41:26Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
10/11/2020 09:41:26criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
10/11/2020 09:41:18Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
10/11/2020 01:38:9criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/11/2020 21:08:1noticeDHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt060-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/11/2020 21:08:1ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/11/2020 13:07:50Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/11/2020 13:07:47criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/11/2020 13:07:46Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/11/2020 13:07:46criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/11/2020 11:44:0Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
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Message 10 of 10
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Re: Wifi Intermittently Dropping

OK, before you do anything, get your channels off of Auto, get an app on your android phone (iOS isn't allowed to do this by Apple), that analyses wifi in your area.  Pick from one of these https://www.comparitech.com/net-admin/wifi-analyzers/ 
Then select the best channels with least interference. 
Then 2.4GHz set 20MHz and 5.0GHZ 40MHz (You can go to 80MHz on 5.0 later if needed). 

Now where is your Router located? Is it in the centre of house? or at an extremity? If possible move it to a more central location away from Radiators, TVs etc. 

Then check to see if there's any difference. 

If you suspect its the Router, then invest in a decent one, here's some reviews https://uk.pcmag.com/routers/8151/the-best-wireless-routers

Avoid Mesh networks, Wifi is half-duplex, so devices can either "talk" or they can "listen" but they cant do both at the same time. Do it properly, either run an ethernet cable (Cat 6 or better, Ethernet is full duplex so you can send/receive 1Gb at the same time, and with Cat 6A you can upgrade to 10Gbe when it becomes cheaper)), or use Powerline/Homeplugs (these use your homes electrical wiring to send/receive data) and invest in a separate Wifi access point for the other side of your house.  Mesh is easier to install but Cable will be better in the long run. More on Mesh here https://www.casatech.com/blog/2020/7/19/five-mistakes-to-avoid-when-setting-up-your-mesh-wifi-system 

Good luck. 

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