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Hub issues - random WiFi outage

timcymru1982
Tuning in

Afternoon, I have a hub 3. We've been getting intermittent WiFi drop outs for a couple of months now. It's usually 1 device at a time, so the rest still work. This ranges from smart phones, Alexa devices, Xbox etc. We've also had issues with streaming Netflix and Prime. The picture becomes distorted or simply stops quite frequently which should happen with a 200mb connection. I tethered my firestick to my phone yesterday when having issues trying to watch Prime and it worked fine. My son's Xbox cannot connect to the router, however can connect to my phone. I'm guessing there's an issue with the router broadcasting WiFi. I've done all the usual, reset router, reset devices etc. Any ideas?

18 REPLIES 18

Tudor
Very Insightful Person
Very Insightful Person

The T3 timeouts and high Pre & Post RS errors look bad, but they are accumulative since the hub was last power cycled, so please power cycle you hub and after a least 2 hours post a new set of figures. This will let us see the current state of your circuit. 


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

Status Tab

Cable Modem StatusItem Status Comments

Acquired Downstream Channel (Hz)
203000000
Locked
Ranged Upstream Channel (Hz)
53700132
Locked
Provisioning State
Online

After about 3 hours since power cycle. 

Downstream Tab

Downstream bonded channels

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

12030000007.138256 qam9
22110000007.338256 qam10
32190000007.340256 qam11
4227000000738256 qam12
52350000006.938256 qam13
62430000006.638256 qam14
72510000006.638256 qam15
82590000006.440256 qam16
92670000006.340256 qam17
10275000000638256 qam18
11283000000638256 qam19
12291000000638256 qam20
13299000000638256 qam21
143070000005.938256 qam22
153150000005.938256 qam23
163230000005.938256 qam24
173310000005.838256 qam25
183390000005.838256 qam26
193470000005.638256 qam27
203550000005.538256 qam28
213630000005.638256 qam29
223710000005.838256 qam30
233790000005.538256 qam31
243870000005.338256 qam32



Downstream bonded channels

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

1Locked38.9930
2Locked38.91100
3Locked40.31310
4Locked38.91510
5Locked38.91890
6Locked38.92150
7Locked38.92560
8Locked40.32840
9Locked40.33050
10Locked38.93470
11Locked38.94440
12Locked38.94860
13Locked38.96020
14Locked38.95630
15Locked38.97830
16Locked38.68330
17Locked38.911400
18Locked38.612110
19Locked38.914950
20Locked38.916930
21Locked38.918750
22Locked38.920670
23Locked38.623840
24Locked38.927480

Upstream Tab

Upstream bonded channels

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

15370013239512064 qam6
23940000039512064 qam8
34620014139512064 qam7
46029990739512064 qam5



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0010
2ATDMA0000
3ATDMA0000
4ATDMA0000

Configuration Tab

General Configuration

Network access
Allowed
Maximum Number of CPEs
1
Baseline Privacy
Enabled
DOCSIS Mode
Docsis30
Config file
cmreg-vmdg505-bbt060-b.cm



Primary Downstream Service Flow

SFID5076
Max Traffic Rate230000061
Max Traffic Burst42600
Min Traffic Rate0



Primary Upstream Service Flow

SFID5075
Max Traffic Rate22000061
Max Traffic Burst42600
Min Traffic Rate0
Max Concatenated Burst42600
Scheduling TypeBestEffort

Network Log Tab

Network Log

Time Priority Description

08/11/2021 04:56:21criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/11/2021 15:09:15noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
06/11/2021 10:21:40criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
06/11/2021 06:56:30ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
03/11/2021 03:08:45criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/11/2021 18:56:30ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
31/10/2021 14:22:38criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
31/10/2021 11:24:59noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
31/10/2021 09:08:33criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
31/10/2021 03:12:20ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/10/2021 21:25:50criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/10/2021 22:28:31noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2021 07:03:26criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
25/10/2021 21:40:44ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
25/10/2021 20:19:55criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
24/10/2021 14:52:47noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2021 14:21:43criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2021 12:40:34ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
19/10/2021 12:57:15criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
19/10/2021 08:02:25criticalReceived 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;

Doesn’t look too bad. 

Maybe a touch noisy.

A bqm may help see what’s going on. 

Or just go get a nice Wi-Fi router and put the hub in modem mode. 

By the way for your sons xbox he should really use and Ethernet cable. It’s a way better way to do it. 

Cheers, have already run a bqm. Pretty sure it's the router. Tim

Hi timcymru1982,

 

Thanks for your post and apologies to hear that you are having an issue with your broadband connection. 


Our diagnostics on your home network and Hub have not found any issues that could account for issues you're having. All power levels and signal levels are at optimal levels, I'm not seeing any errors and there are no open faults in your area either.


Looking at the Wifi side of the network, there is some congestion which could account for dropouts. You can try these tips and hints to optimise the WiFi as much as possible. You may also benefit from downloading the VM Connect App. You can use this to run scans to see what the issue may be. It will identify any dead spots and show you how to resolve them too.


Keep us posted with how you get on. 

Kath_F
Forum Team

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