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9121
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Saturday, December 12th, 2020 4:00 AM

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Frequent Internet loss of connectivity

I've had ongoing issues with losing connectivty multiple times a day for over a month.  I've had a tech come out recently and they said they found a problem with a splitter and that signals look good.  However it is still occurring.  I just pulled up the event logs and see that this error is happening frequestly.  Any insight appreciated.

 

All logs from Yesterday    

ti_dhcp6c[6780]: 72001011-DHCPv6 - Missing Required Option 822020/12/11 14:17:46Critical
ti_dhcp6c[6780]: 72001011-DHCPv6 - Missing Required Option 242020/12/11 14:17:46Critical
ti_dhcp6c[6780]: 72001011-DHCPv6 - Missing Required Option 822020/12/11 14:17:40Critical

Question

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4 years ago

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EG

Expert

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111K Messages

5 years ago

Please also post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers, and the error log entries in their entirety if there are more.


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9121

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2 Messages

5 years ago

Posting 3 pages of the event logs from last month

 

IndexLock StatusFrequencySNRPower LevelModulation
Downstream
Channel Bonding Value
17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
18
19
20
21
22
23
24
25
26
27
28
29
30
31
33
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
603000000
507000000
513000000
519000000
525000000
531000000
537000000
543000000
549000000
555000000
561000000
567000000
573000000
579000000
585000000
591000000
597000000
609000000
615000000
621000000
627000000
633000000
639000000
645000000
651000000
657000000
663000000
669000000
675000000
681000000
687000000
782800000
37.636276
38.983261
38.983261
40.366287
38.983261
38.983261
38.605377
38.983261
38.605377
38.983261
38.983261
38.983261
38.983261
37.636276
38.605377
38.605377
38.605377
38.605377
38.983261
37.636276
37.355988
37.355988
37.355988
37.355988
37.355988
37.636276
37.636276
38.605377
37.355988
37.636276
37.636276
NA
0.599998
6.000000
5.300003
5.199997
4.300003
3.900002
4.099998
4.199997
4.099998
4.300003
4.300003
3.599998
2.799999
1.599998
0.000000
0.799999
0.799999
2.000000
2.500000
1.200001
1.099998
0.099998
-0.400002
0.900002
0.400002
1.000000
2.299999
2.500000
1.900002
1.400002
0.299999
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
OFDM
IndexLock StatusFrequencySymbol RatePower LevelModulationChannel Type
Upstream
Channel Bonding Value
1
2
3
4
Locked
Locked
Locked
Locked
17300000
36500000
30100000
23700000
5120 KSym/sec
5120 KSym/sec
5120 KSym/sec
5120 KSym/sec
41.520599
43.020599
42.520599
42.020599
64QAM
64QAM
64QAM
64QAM
US_TYPE_ATDMA
US_TYPE_ATDMA
US_TYPE_ATDMA
US_TYPE_ATDMA

 

Logs

ti_dhcp6c[8802]: 72001011-DHCPv6 - Missing Required Option 822020/11/30 15:35:11Critical
ti_dhcp6c[8802]: 72001011-DHCPv6 - Missing Required Option 242020/11/30 15:35:11Critical
ti_dhcp6c[8802]: 72001011-DHCPv6 - Missing Required Option 822020/11/30 15:35:04Critical
ti_dhcp6c[8802]: 72001011-DHCPv6 - Missing Required Option 822020/11/28 15:35:10Critical
ti_dhcp6c[8802]: 72001011-DHCPv6 - Missing Required Option 242020/11/28 15:35:10Critical
ti_dhcp6c[8802]: 72001011-DHCPv6 - Missing Required Option 822020/11/28 15:35:04Critical
ti_dhcp6c[8802]: 72001011-DHCPv6 - Missing Required Option 822020/11/26 21:04:25Critical
ti_dhcp6c[8802]: 72001011-DHCPv6 - Missing Required Option 242020/11/26 21:04:25Critical
ti_dhcp6c[8802]: 72001011-DHCPv6 - Missing Required Option 822020/11/26 21:04:16Critical
ti_dhcp6c[8802]: 72001009-DHCPv6 - No Advertise or Reply Received 1 times2020/11/26 21:04:16Critical
[Harvester][2794]: Harvester StartRadioTrafficHarvesting Starting Thread to start RadioTraffic Data Harvesting2020/11/25 09:03:39Notice
[Harvester][2794]: Harvester StartAssociatedDeviceHarvesting : Started Thread to start DeviceData Harvesting2020/11/25 09:03:39Notice
DHCPv4[8835]: 72001001-DHCPv4 Provision - Completed2020/11/25 09:02:39Informational
ti_dhcp6c[8802]: 72001002-DHCPv6 Provision - Completed2020/11/25 09:02:37Informational
ti_dhcp6c[8802]: 72001011-DHCPv6 - Missing Required Option 822020/11/25 09:02:35Critical
ti_dhcp6c[8802]: 72001011-DHCPv6 - Missing Required Option 242020/11/25 09:02:35Critical
ti_dhcp6c[8802]: 72001004-DHCPv6 Provision - 0 Retries Attempted with Last attempt at Wed Nov 25 14:02:34 20202020/11/25 09:02:35Critical
ti_dhcp6c[8802]: 72001011-DHCPv6 - Missing Required Option 822020/11/25 09:02:34Critical
ti_dhcp6c[8802]: 72001011-DHCPv6 - Missing Required Option 242020/11/25 09:02:34Critical
ti_dhcp6c[8802]: 72001004-DHCPv6 Provision - 1 Retries Attempted with Last attempt at Wed Nov 25 14:02:33 20202020/11/25 09:02:34Critical

 

eRouterEvents[8693]: 72003004-eRouter enabled as Dual Stack2020/11/25 09:02:32Informational
DHCPv4[28447]: 72001001-DHCPv4 Provision - Completed2020/11/25 08:56:47Informational
ti_dhcp6c[28429]: 72001002-DHCPv6 Provision - Completed2020/11/25 08:56:44Informational
ti_dhcp6c[28429]: 72001011-DHCPv6 - Missing Required Option 822020/11/25 08:56:42Critical
ti_dhcp6c[28429]: 72001011-DHCPv6 - Missing Required Option 242020/11/25 08:56:42Critical
ti_dhcp6c[28429]: 72001004-DHCPv6 Provision - 0 Retries Attempted with Last attempt at Wed Nov 25 13:56:41 20202020/11/25 08:56:42Critical
ti_dhcp6c[28429]: 72001011-DHCPv6 - Missing Required Option 822020/11/25 08:56:41Critical
ti_dhcp6c[28429]: 72001011-DHCPv6 - Missing Required Option 242020/11/25 08:56:41Critical
ti_dhcp6c[28429]: 72001004-DHCPv6 Provision - 1 Retries Attempted with Last attempt at Wed Nov 25 13:56:40 20202020/11/25 08:56:41Critical
eRouterEvents[28386]: 72003004-eRouter enabled as Dual Stack2020/11/25 08:56:39Informational
eRouterEvents[24615]: 72003001-eRouter is administratively disabled2020/11/25 08:56:22Informational
eRouterEvents[24615]: 72003004-eRouter enabled as Dual Stack2020/11/25 08:56:21Informational
DHCPv4[7297]: 72001020-DHCPv4 - IP Address Released2020/11/25 08:56:21Informational
ti_dhcp6c[7274]: 72001011-DHCPv6 - Missing Required Option 822020/11/24 09:05:57Critical
ti_dhcp6c[7274]: 72001011-DHCPv6 - Missing Required Option 242020/11/24 09:05:57Critical
ti_dhcp6c[7274]: 72001011-DHCPv6 - Missing Required Option 822020/11/24 09:05:51Critical
ti_dhcp6c[7274]: 72001011-DHCPv6 - Missing Required Option 822020/11/22 15:34:07Critical
ti_dhcp6c[7274]: 72001011-DHCPv6 - Missing Required Option 242020/11/22 15:34:07Critical
ti_dhcp6c[7274]: 72001011-DHCPv6 - Missing Required Option 822020/11/22 15:33:57Critical
ti_dhcp6c[7274]: 72001009-DHCPv6 - No Advertise or Reply Received 1 times2020/11/22 15:33:57Critical

[Harvester][2840]: Harvester StartRadioTrafficHarvesting Starting Thread to start RadioTraffic Data Harvesting2020/11/21 07:09:56Notice[Harvester][2840]: Harvester StartAssociatedDeviceHarvesting : Started Thread to start DeviceData Harvesting2020/11/21 07:09:56NoticeDHCPv4[7297]: 72001001-DHCPv4 Provision - Completed2020/11/21 07:08:54Informationalti_dhcp6c[7274]: 72001002-DHCPv6 Provision - Completed2020/11/21 07:08:52Informationalti_dhcp6c[7274]: 72001011-DHCPv6 - Missing Required Option 822020/11/21 07:08:50Criticalti_dhcp6c[7274]: 72001011-DHCPv6 - Missing Required Option 242020/11/21 07:08:50Criticalti_dhcp6c[7274]: 72001004-DHCPv6 Provision - 0 Retries Attempted with Last attempt at Sat Nov 21 12:08:49 20202020/11/21 07:08:50Criticalti_dhcp6c[7274]: 72001011-DHCPv6 - Missing Required Option 822020/11/21 07:08:49Criticalti_dhcp6c[7274]: 72001011-DHCPv6 - Missing Required Option 242020/11/21 07:08:49Criticalti_dhcp6c[7274]: 72001004-DHCPv6 Provision - 1 Retries Attempted with Last attempt at Sat Nov 21 12:08:48 20202020/11/21 07:08:49CriticaleRouterEvents[7181]: 72003004-eRouter enabled as Dual Stack2020/11/21 07:08:47Informationalti_dhcp6c[7296]: 72001011-DHCPv6 - Missing Required Option 822020/11/20 03:16:42Criticalti_dhcp6c[7296]: 72001011-DHCPv6 - Missing Required Option 242020/11/20 03:16:42Criticalti_dhcp6c[7296]: 72001011-DHCPv6 - Missing Required Option 822020/11/20 03:16:32Criticalti_dhcp6c[7296]: 72001009-DHCPv6 - No Advertise or Reply Received 1 times2020/11/20 03:16:32Critical[Harvester][2874]: Harvester StartRadioTrafficHarvesting Starting Thread to start RadioTraffic Data Harvesting2020/11/18 07:35:09Notice[Harvester][2874]: Harvester StartAssociatedDeviceHarvesting : Started Thread to start DeviceData Harvesting2020/11/18 07:35:09NoticeDHCPv4[7329]: 72001001-DHCPv4 Provision - Completed2020/11/18 07:34:03Informationalti_dhcp6c[7296]: 72001002-DHCPv6 Provision - Completed2020/11/18 07:34:00Informationalti_dhcp6c[7296]: 72001011-DHCPv6 - Missing Required Option 822020/11/18 07:33:58Critical

 

 

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EG

Expert

 • 

111K Messages

4 years ago

The signal stats are o/k but the error log entries indicate that something is going on. Perhaps there is noise ingress into the line(s) somewhere.

 

There are other signal stat figures that can't be read by the modem. They are the "Upstream Rx Power" (Upstream Receive Power Level), the "Upstream SNR Ch." (Upstream Signal To Noise Ratio), and the "Upstream ICFR" (In Channel Frequency Response). These are as equally important in diagnosing connectivity issues as are the modem's stats.

 

I'm going to escalate your issue to the Comcast corporate employees that are available to these boards. They will be able to poll the CMTS to see whether or not everything is in the green zone, see your node / cable plant and modem health, and also see a history plot for the modem. You should get a reply here in your topic. Good luck !

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