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ERR_NETWORK_CHANGED: connection was interrupted every several minutes

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New Poster

ERR_NETWORK_CHANGED: connection was interrupted every several minutes

Hello,

I've called numerous times about this. I am constantly getting the error. This is with a Gigabit connection.

 

I'm getting "ERR_NETWORK_CHANGED: connection was interrupted " with quick, brief outages, most lasting just a few seconds and not actually completely disconnecting. I've been given numerous "causes" for this including the WiFi (third party router - the problem was occurring before I purchased it), but my main box is directly connected to the modem.

If I'm streaming video on Zoom or something else - forget it. 

 

I am a Web Developer and my kids are schooling from home right now so this is an absolute nightmare. I'm not a network admin, but I have enough knowledge to generally know what I'm doing and I can't think of anything else to do to fix this on my end.

 

This can occur when the network is being heavily utilized and also when it isn't.

 

Thanks!

Chris

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New Poster

Re: ERR_NETWORK_CHANGED: connection was interrupted every several minutes

Here are the modem logs from the last week. It looks like others are describing similar problems:

ti_dhcp6c[14937]: 72001011-DHCPv6 - Missing Required Option 822020/10/19 01:23:41Critical
ti_dhcp6c[14937]: 72001011-DHCPv6 - Missing Required Option 822020/10/19 01:23:41Critical
ti_dhcp6c[14937]: 72001011-DHCPv6 - Missing Required Option 242020/10/19 01:23:41Critical
ti_dhcp6c[14937]: 72001009-DHCPv6 - No Advertise or Reply Received 1 times2020/10/19 01:23:41Critical
DHCPv4[14969]: 72001001-DHCPv4 Provision - Completed2020/10/17 08:13:09Informational
ti_dhcp6c[14937]: 72001002-DHCPv6 Provision - Completed2020/10/17 08:13:06Informational
ti_dhcp6c[14937]: 72001011-DHCPv6 - Missing Required Option 822020/10/17 08:13:04Critical
ti_dhcp6c[14937]: 72001011-DHCPv6 - Missing Required Option 242020/10/17 08:13:04Critical
ti_dhcp6c[14937]: 72001011-DHCPv6 - Missing Required Option 822020/10/17 08:13:03Critical
ti_dhcp6c[14937]: 72001011-DHCPv6 - Missing Required Option 242020/10/17 08:13:03Critical
ti_dhcp6c[14937]: 72001004-DHCPv6 Provision - 0 Retries Attempted with Last attempt at Sat Oct 17 13:13:02 20202020/10/17 08:13:03Critical
ti_dhcp6c[14937]: 72001004-DHCPv6 Provision - 1 Retries Attempted with Last attempt at Sat Oct 17 13:13:01 20202020/10/17 08:13:02Critical
eRouterEvents[14811]: 72003004-eRouter enabled as Dual Stack2020/10/17 08:13:01Informational
eRouterEvents[11797]: 72003001-eRouter is administratively disabled2020/10/17 08:12:47Informational
eRouterEvents[11797]: 72003004-eRouter enabled as Dual Stack2020/10/17 08:12:46Informational
DHCPv4[8949]: 72001020-DHCPv4 - IP Address Released2020/10/17 08:12:46Informational
[Harvester][2872]: Harvester StartAssociatedDeviceHarvesting : Started Thread to start DeviceData Harvesting2020/10/17 08:10:33Notice
DHCPv4[8949]: 72001001-DHCPv4 Provision - Completed2020/10/17 08:09:49Informational
ti_dhcp6c[8919]: 72001002-DHCPv6 Provision - Completed2020/10/17 08:09:45Informational
ti_dhcp6c[8919]: 72001011-DHCPv6 - Missing Required Option 822020/10/17 08:09:43Critical
Highlighted
Expert

Re: ERR_NETWORK_CHANGED: connection was interrupted every several minutes

What do the modem's signal stats look like ? Try getting them here http://192.168.100.1 or here http://10.0.0.1

Please post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.

What is the exact make and model number of the modem ?




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New Poster

Re: ERR_NETWORK_CHANGED: connection was interrupted every several minutes

cbusby76_0-1603120903395.png

 

Arris TG3482G

 

IndexLock StatusFrequencySNRPower LevelModulation

Downstream
Channel Bonding Value
1
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
2
3
4
5
6
7
8
159
 
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
453000000
501000000
507000000
513000000
519000000
525000000
531000000
537000000
543000000
549000000
555000000
567000000
573000000
579000000
585000000
591000000
597000000
603000000
609000000
615000000
621000000
627000000
633000000
639000000
645000000
459000000
465000000
471000000
477000000
483000000
489000000
495000000
702000000
641600000
38.983261
38.983261
38.983261
38.983261
38.983261
38.983261
38.983261
38.983261
38.605377
38.605377
38.983261
38.605377
38.605377
38.605377
38.605377
38.983261
38.605377
38.605377
38.605377
38.605377
38.605377
37.355988
37.636276
37.636276
37.355988
38.983261
38.605377
38.983261
38.983261
38.983261
38.605377
38.983261
38.983261
NA
15.099998
16.599998
16.599998
16.500000
16.599998
16.599998
16.500000
16.400002
16.199997
16.400002
16.500000
16.599998
16.699997
16.900002
17.000000
17.000000
17.199997
17.199997
17.300003
17.199997
16.900002
16.800003
16.699997
16.300003
16.099998
15.000000
15.400002
15.599998
15.699997
16.000000
16.199997
16.400002
16.599998
NA
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
UNSUPPORTED
OFDM

 

IndexLock StatusFrequencySymbol RatePower LevelModulationChannel Type

Upstream
Channel Bonding Value
1
2
3
4
Locked
Locked
Locked
Locked
36500000
17300000
23700000
30100000
5120 KSym/sec
5120 KSym/sec
5120 KSym/sec
5120 KSym/sec
37.270599
37.520599
37.520599
37.520599
64QAM
64QAM
64QAM
64QAM
US_TYPE_ATDMA
US_TYPE_ATDMA
US_TYPE_ATDMA
US_TYPE_ATDMA
Highlighted
Expert

Re: ERR_NETWORK_CHANGED: connection was interrupted every several minutes

This may or may not be the root cause of the problem but it should be addressed regardless.  The downstream power is too high / out of spec. Is there an amplifier on the coax line that leads to the modem ? If so, remove it and see.

 

If not, you could try using a forward path attenuator pad such as this one to knock the power down in to the in spec range;

 

https://www.amazon.com/FPA9-54-Forward-Attenuator-DOCSIS-Cable/dp/B08DMBWG8Q

 

Good luck !

 

 



I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!
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New Poster

Re: ERR_NETWORK_CHANGED: connection was interrupted every several minutes

The last time they came out, they put one of these on. I'm having trouble with and without it.

Highlighted
Expert

Re: ERR_NETWORK_CHANGED: connection was interrupted every several minutes

Then perhaps it would be best to get the techs re-involved until it is fixed properly. 

 

Bear in mind that if the premises facing techs can not find or fix a problem at your home, it is they who are responsible for escalating it to their line / network / maintenance dept. techs. The problem may lie beyond your home in the local neighborhood infrastructure somewhere but it is their S.O.P. to start at the home.
Good luck with it !



I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!