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d_patel88
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Intermittent internet drop off, Network OK

I've noticed today that my internet connection has been a little flaky. 

I say internet, but I remain connected to the network, but can't access anything on the internet. 

For example, happily using a local remote session, but no luck accessing Google. 

VM Chat said that my modem had been online for over two week now and there were no issues there. They suggested a hard reset, but I don't think that that will resolve the issue. 

I've seen a few others have issues that are similar to mine and was hoping for a few pointers. 

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griffin
Alessandro Volta
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Message 2 of 44
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Re: Intermittent internet drop off, Network OK

Are you connecting to the Hub wired directly to the Hub or wirelessly?

Posting some basic diagnostic info may show if there is anything obviously amiss with the WAN side connection.

Navigate to the hub's GUI using http://192.168.100.1
Don't log in, click the Router Status button.
Copy \ Paste the Downstream, Upstream, and Network Logs.

Don't worry about the formatting, but do obscure personal information like your WAN IP address.

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d_patel88
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Message 3 of 44
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Re: Intermittent internet drop off, Network OK

I see it happening on both wired and wireless. 

Downstream

Downstream  DS-1 DS-2 DS-3 DS-4 DS-5 DS-6 DS-7 DS-8

Frequency (Hz)139000000147000000155000000163000000171000000179000000187000000195000000
Lock Status(QAM Lock/FEC Sync/MPEG Lock)LockedLockedLockedLockedLockedLockedLockedLocked
Channel ID12345678
Modulation256QAM256QAM256QAM256QAM256QAM256QAM256QAM256QAM
Symbol Rate (Msym/sec)6.9520006.9520006.9520006.9520006.9520006.9520006.9520006.952000
Interleave DepthI=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
Power Level (dBmV)-0.46-0.40-0.72-1.02-1.31-1.48-1.76-2.28
RxMER (dB)36.1736.8436.8436.8436.8436.8437.0936.84
Pre RS Errors1423588986420189114481307011037573611006
Post RS Errors1111741512726469632310604051177

 

Upstream

Upstream  US-1 US-2 US-3 US-4

Channel Type2.02.02.02.0
Channel ID52515049
Frequency (Hz)25800000326000003940000046200000
Ranging StatusSuccessSuccessSuccessSuccess
Modulation16QAM64QAM64QAM64QAM
Symbol Rate (Sym/sec)5120000512000051200005120000
Mini-Slot Size2222
Power Level (dBmV)42.4643.2544.2545.50
T1 Timeouts0000
T2 Timeouts0000
T3 Timeouts9000
T4 Timeouts0000

 

and Network Log

Network Log

First TimeLast TimePriorityError NumberDescription
18/05/2018 11:28:36 GMT18/05/2018 11:28:36 GMTWarning (5)66050310Auth Success - Web login successful.
18/05/2018 11:28:29 GMT18/05/2018 11:28:29 GMTWarning (5)66050310Auth Success - Web login successful.
18/05/2018 10:54:18 GMT18/05/2018 10:54:18 GMTWarning (5)66050310Auth Success - Web login successful.
18/05/2018 10:54:11 GMT18/05/2018 10:54:11 GMTWarning (5)66050310Auth Success - Web login successful.
17/05/2018 23:45:14 GMT17/05/2018 23:45:14 GMTCritical (3)82000200No Ranging Response received - T3 time-out
17/05/2018 20:37:04 GMT17/05/2018 20:37:04 GMTCritical (3)82000200No Ranging Response received - T3 time-out
17/05/2018 20:37:03 GMT17/05/2018 20:37:03 GMTCritical (3)82000200No Ranging Response received - T3 time-out
17/05/2018 20:31:19 GMT17/05/2018 20:31:19 GMTCritical (3)82000200No Ranging Response received - T3 time-out
17/05/2018 19:38:05 GMT17/05/2018 19:38:05 GMTCritical (3)82000200No Ranging Response received - T3 time-out
16/05/2018 23:21:42 GMT16/05/2018 23:21:42 GMTCritical (3)82000200No Ranging Response received - T3 time-out
15/05/2018 13:16:06 GMT15/05/2018 13:16:06 GMTError (4)68010400DHCP REBIND WARNING - Field invalid in response
15/05/2018 13:15:29 GMT15/05/2018 13:15:29 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
15/05/2018 13:14:54 GMT15/05/2018 13:14:54 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
15/05/2018 13:13:45 GMT15/05/2018 13:13:45 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
15/05/2018 13:11:26 GMT15/05/2018 13:11:26 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
15/05/2018 13:06:49 GMT15/05/2018 13:06:49 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
15/05/2018 12:57:34 GMT15/05/2018 12:57:34 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
15/05/2018 12:39:06 GMT15/05/2018 12:39:06 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
15/05/2018 12:02:10 GMT15/05/2018 12:02:10 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
15/05/2018 10:48:17 GMT15/05/2018 10:48:17 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
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d_patel88
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Message 4 of 44
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Re: Intermittent internet drop off, Network OK

Oh and thanks for helping out Smiley Happy
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griffin
Alessandro Volta
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Message 5 of 44
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Re: Intermittent internet drop off, Network OK

No problem.

I take it you are getting problems when wired directly into the Hub and are not using third party equipment like switches and powerline adapters. It is also worth trying a different ethernet cable just to rule out the one you are using isn't going bad.

The stats are generally fine, but I would reset the RS counters and reboot the Hub and keep an eye on them for a rapid rise in errors over a short space of time.

There is also a clutch of T3 errors in a short space of time on the 17th, this would suggest a blip on your upstream.

I would start a Broadband Quality Monitor to get a more detailed picture on how your connection is performing. You will need to enable Respond to ICMP Echo Requests in the Advanced Settings > Tools > Ping section of the Hub's GUI.

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d_patel88
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Message 6 of 44
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Re: Intermittent internet drop off, Network OK

Good point, I do have a switch in between. I wonder if there's anything on there I can grab.

I've reset those two counters and will keep an eye on it. I actually set on of those up a while ago.

https://www.thinkbroadband.com/broadband/monitoring/quality/share/409afaef3cc65f55162a87e5ec16423b1a...

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griffin
Alessandro Volta
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Message 7 of 44
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Re: Intermittent internet drop off, Network OK

The graph doesn't look too good from 8am onwards. Were you heavily downloading then? If not it looks like an issue with the Internet connection and VM will need to take a closer look.

It would be worthwhile rebooting the Hub.

 

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d_patel88
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Message 8 of 44
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Re: Intermittent internet drop off, Network OK

It was when I logged into work. I downloaded a few very large archives (between 3-6GB each) and uploaded them too.

Could this be why my connection was flaky?
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griffin
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Message 9 of 44
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Re: Intermittent internet drop off, Network OK

It could be, as it is shared bandwidth and if you are saturating the connection which does not leave much room for anything else. (especially on the upload which may be governed by traffic management, depending on package and time)

The acid test would be to observe the BQM during downloads and after.

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d_patel88
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Message 10 of 44
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Re: Intermittent internet drop off, Network OK

Thanks again. I'll keep an eye on it and see if anything changes. I've still noticed a few drop outs since all that downloading this morning and the network is being used normally now.

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