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dabeeeenster
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Occasional disconnects on new connection

Hi,

Seeing the following in my logs - is this normal? On a newish gig1 connection, Hub4 is in Modem mode. Thanks!

Time Priority Description

Thu Jun 17 05:14:15 20213SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 8 12:17:33 20216CM-STATUS message sent. Event Type Code: 4; Chan ID: 3; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 8 12:17:36 20213No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 8 12:17:36 20213SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 8 12:17:37 20215Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 8 12:17:40 20216CM-STATUS message sent. Event Type Code: 21; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 8 12:17:42 20215Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 8 12:18:11 20213No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 8 12:18:17 20216CM-STATUS message sent. Event Type Code: 4; Chan ID: 2; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Fri Jul 9 16:04:27 20214DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Sat Jul 10 09:37:00 20215MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Sat Jul 10 10:09:25 20216CM-STATUS message sent. Event Type Code: 5; Chan ID: 6; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 13 12:50:41 20214DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 13 21:31:40 20213No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 15 05:14:39 20216CM-STATUS message sent. Event Type Code: 23; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Fri Jul 16 20:57:40 20214DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Jul 19 20:01:45 20213No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 20 08:57:40 20214DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 21 00:47:58 20213No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 22 05:14:39 20216CM-STATUS message sent. Event Type Code: 23; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 22 23:31:32 20213No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Sat Jul 24 08:33:52 20213Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Sat Jul 24 08:36:28 20215MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 27 09:34:35 20213SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

Cable Modem StatusItem Status CommentsChannel Overview Downstream Upstream

Cable Modem Status
Online
DOCSIS 3.1
Primary downstream channel
Locked
SC-QAM
DOCSIS 3.0 channels
31
4
DOCSIS 3.1 channels
1
0

 

Downstream

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

253310000007.59999838.605377QAM25625
113900000010.80000338.983261QAM2561
214700000010.80000338.605377QAM2562
315500000010.90000238.983261QAM2563
416300000011.50000038.605377QAM2564
517100000011.59999838.983261QAM2565
617900000011.59999838.983261QAM2566
718700000011.50000038.983261QAM2567
819500000011.69999740.366287QAM2568
920300000011.30000338.983261QAM2569
1021100000010.90000238.983261QAM25610
1121900000010.59999838.605377QAM25611
1222700000010.09999838.605377QAM25612
132350000009.30000338.605377QAM25613
142430000008.19999738.983261QAM25614
152510000008.00000038.605377QAM25615
162590000007.00000038.983261QAM25616
172670000007.19999738.605377QAM25617
182750000007.30000338.605377QAM25618
192830000006.90000238.605377QAM25619
202910000006.40000238.605377QAM25620
212990000005.69999738.983261QAM25621
223070000005.90000238.983261QAM25622
233150000006.59999838.983261QAM25623
243230000007.40000238.605377QAM25624
263390000008.00000038.605377QAM25626
273470000007.90000238.605377QAM25627
283550000007.59999838.983261QAM25628
293630000007.69999738.605377QAM25629
303710000008.30000338.605377QAM25630
313790000008.59999837.355988QAM25631

 

Upstream

 

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

13940000045.2705995120 KSym/sec64QAM4
24620000045.2705995120 KSym/sec64QAM3
36030000045.7705995120 KSym/sec32QAM1
45370000045.7705995120 KSym/sec64QAM2

Config

General Configuration
Network access
true
Maximum Number of CPEs
1
Baseline Privacy
true
DOCSIS Mode
3.1
Config file
cmreg-vmdg640-bbt076+voc-b.cm


Primary Downstream Service Flow
SFID
273430
Max Traffic Rate
1200000450
Max Traffic Burst
42600
Min Traffic Rate
0


Primary Upstream Service Flow
SFID
273429
Max Traffic Rate
55000270
Max Traffic Burst
42600
Min Traffic Rate
0
Max Concatenated Burst
42600
Scheduling Type
bestEffort
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-tony-
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Alessandro Volta
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Re: Occasional disconnects on new connection

are the disconnects wired or wireless

the downstream is high on some channels +10 is max but i dont think that would cause disconnects - speed problems maybe but thats a big maybe - that said they should be lowered - that will need a tech visit

post the second page from the downstream - that may tell us more

upstream has its own problems - levels are fine but one channel is on 32qam - they should all be on 64 - that may be the issue - try a reboot - before you do that though post the second page of the downstream - a reboot will zero all the errors if any exist

____________________

Tony.
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dabeeeenster
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Re: Occasional disconnects on new connection

Thanks for the quick reply! This is all wired. 

 

3.0 Downstream channelsChannel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
253310000007.50000038.983261QAM25625
113900000010.69999738.983261QAM2561
214700000010.69999738.605377QAM2562
315500000010.80000338.983261QAM2563
416300000011.30000338.983261QAM2564
517100000011.50000038.983261QAM2565
617900000011.50000038.983261QAM2566
718700000011.50000038.983261QAM2567
819500000011.59999840.366287QAM2568
920300000011.30000338.605377QAM2569
1021100000010.80000338.605377QAM25610
1121900000010.50000038.605377QAM25611
1222700000010.00000038.605377QAM25612
132350000009.19999738.605377QAM25613
142430000008.09999838.983261QAM25614
152510000007.90000238.605377QAM25615
162590000006.90000238.983261QAM25616
172670000007.09999838.605377QAM25617
182750000007.19999738.605377QAM25618
192830000006.80000338.605377QAM25619
202910000006.30000338.983261QAM25620
212990000005.69999738.983261QAM25621
223070000005.80000338.983261QAM25622
233150000006.59999838.605377QAM25623
243230000007.40000238.605377QAM25624
263390000008.00000038.605377QAM25626
273470000007.90000238.605377QAM25627
283550000007.50000038.605377QAM25628
293630000007.69999738.983261QAM25629
303710000008.19999738.605377QAM25630
313790000008.50000037.636276QAM25631


3.0 Downstream channelsChannel Lock Status RxMER (dB) Pre RS Errors Post RS Errors
25Locked38.98326100
1Locked38.98326100
2Locked38.60537700
3Locked38.98326190
4Locked38.98326100
5Locked38.98326100
6Locked38.98326150
7Locked38.98326100
8Locked40.36628710
9Locked38.60537700
10Locked38.60537730
11Locked38.60537700
12Locked38.60537700
13Locked38.60537700
14Locked38.98326100
15Locked38.60537700
16Locked38.98326100
17Locked38.60537700
18Locked38.60537700
19Locked38.60537700
20Locked38.98326100
21Locked38.98326100
22Locked38.98326100
23Locked38.60537700
24Locked38.60537700
26Locked38.60537700
27Locked38.60537700
28Locked38.60537700
29Locked38.98326100
30Locked38.60537700
31Locked37.63627600


3.1 Downstream channelsChannel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)
33964K1880QAM4096759


3.1 Downstream channelsChannel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)
33Locked403.91517568140
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-tony-
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Alessandro Volta
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Message 4 of 5
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Re: Occasional disconnects on new connection

ok thats confirmed the downstream is high on some channels - the error levels are fine

all you can do is a reboot and see if that helps on the upstream - if not try a reset - that will set everything back to default - again see if it helps the upstream

regardless of that you need a tech to lower the downstream power levels and look to see whats causing the disconnects - wait for VM to get to the thread they should book a tech

worth setting up a bqm - that adds to the info

____________________

Tony.
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Laurie_C
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Re: Occasional disconnects on new connection

Hi dabeeeenster,

 

Thanks for getting in touch, and a very warm welcome back to the Community Forum!

 

I'd be more than happy to look into this for you, I'll just need to confirm a few details via Private Message. Please look out for a purple envelope in the top right corner of your screen.

 

Kind regards,

Laurie

Laurie_C
Forum Team
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