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ChrispyMcD
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Message 1 of 4
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Brief loss of broadband service every 10 minutes.

I have a super hub 3 set up in modem mode. For the last week I have been noticing brief loss of internet service every 10 minutes.

 

Looking at the router status I can see the following.

Upstream bonded channels

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

14620000051512064 qam7
25370000051512064 qam6
36030000051512064 qam5
43940000051512064 qam8



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0000
3ATDMA001940
4ATDMA0000

 

Downstream bonded channels

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

1323000000-4.438256 qam24
2315000000-4.437256 qam23
3307000000-3.737256 qam22
4299000000-4.737256 qam21
5291000000-5.737256 qam20
6283000000-6.237256 qam19
7275000000-5.537256 qam18
8267000000-5.537256 qam17
9259000000-5.737256 qam16
10251000000-5.537256 qam15
11243000000-5.437256 qam14
12235000000-5.237256 qam13
13227000000-5.737256 qam12
14219000000-537256 qam11
15211000000-537256 qam10
16203000000-4.937256 qam9
17195000000-4.737256 qam8
18187000000-4.237256 qam7
19179000000-4.237256 qam6
20171000000-4.237256 qam5
21163000000-437256 qam4
22155000000-3.737256 qam3
23147000000-3.237256 qam2
24139000000-3.237256 qam1



Downstream bonded channels

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

1Locked38.981866804664
2Locked37.673559924997
3Locked37.693008507516
4Locked37.385948568637
5Locked37.3107559302235
6Locked37.6100757321215
7Locked37.6103791339094
8Locked37.698486428740
9Locked37.692085557598
10Locked37.699355436948
11Locked37.395840520552
12Locked37.3103671427607
13Locked37.6114981294707
14Locked37.3109018456896
15Locked37.6115176405815
16Locked37.6105298546841
17Locked37.6104316590963
18Locked37.6108195589158
19Locked37.699335800271
20Locked37.6108753658769
21Locked37.696305847822
22Locked37.6112262691848
23Locked37.6977171005464
24Locked37.6113900766021

 

Does everything look normal here? Or can anyone spot some issues?

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ChrispyMcD
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Re: Brief loss of broadband service every 10 minutes.

What follows is the network log

 

2019-02-13 00:17:15.00criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:17:15.00Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:17:38.00criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:17:38.00Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:19:28.00criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:19:28.00Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:19:29.00criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:19:29.00Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:21:10.00criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:21:11.00Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:21:11.00criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:21:11.00Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:24:49.00criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:24:49.00Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:24:51.00criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:24:51.00Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:25:52.00criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:25:52.00Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:25:53.00criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;2019-02-13 00:25:53.00Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

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jpeg1
Trouble shooter
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Message 3 of 4
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Re: Brief loss of broadband service every 10 minutes.

There are far too many uncorrected errors. Call Customer Services.

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griffin
Alessandro Volta
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Message 4 of 4
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Re: Brief loss of broadband service every 10 minutes.

Before calling in I would give the coax cable a quick check for obvious signs of damage and all connectors are hand tight.

Your upstream power levels are maxxed out with the counters showing a lot of T3 error on one channels as well.

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