Basic Internet Connectivity And Modem Help

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Posts: 6
Registered: ‎01-02-2008

Motorola 6121 Modem Constant Reboots in Elk Grove CA

‎07-16-2012 11:48 PM

8 year old home with all internal wiring. No problems for last 8 years until last month.  Constant reboots of the modem.  Had a 6120 and bought a 6121 and still having the same issues.  Here are some stats:

 

Downstream Bonding Channel ValueChannel ID 60  57  58  59  Frequency 531000000 Hz  513000000 Hz  519000000 Hz  525000000 Hz  Signal to Noise Ratio 37 dB  36 dB  37 dB  37 dB  Downstream Modulation QAM256  QAM256  QAM256  QAM256  Power Level The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading 8 dBmV   7 dBmV   8 dBmV   8 dBmV  

Upstream Bonding Channel Value Channel ID 3  2  1  Frequency 35400000 Hz  23700000 Hz  30600000 Hz  Ranging Service ID 867  867  867  Symbol Rate 2.560 Msym/sec  5.120 Msym/sec  5.120 Msym/sec  Power Level 49 dBmV  49 dBmV  49 dBmV  Upstream Modulation [3] QPSK
[2] 16QAM
  [3] QPSK
[3] 64QAM
  [3] QPSK
[3] 64QAM
  Ranging Status Success  Success  Success 

Signal Stats (Codewords) Bonding Channel ValueChannel ID 60  57  58  59  Total Unerrored Codewords 649491823  649492121  649492211  649490364  Total Correctable Codewords 10  0  0  0  Total Uncorrectable Codewords 654  508  546  532 

 

Downstream Bonding Channel Value

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i-am-nerdburg
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Registered: ‎06-27-2009

Re: Motorola 6121 Modem Constant Reboots in Elk Grove CA

‎07-17-2012 07:39 AM

Levels are OK. Can you post your error log pls?

------------

Connection and trouble shooting tips (How to check signal levels.) . Info you should post to get help.
The opinions expressed here are my own and are not sanctioned by my employer.


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Re: Motorola 6121 Modem Constant Reboots in Elk Grove CA

‎07-17-2012 08:59 AM

Time Priority     Code     Message     Jul 16 2012 21:25:22 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:00:13 6-Notice
Cable Modem Reboot due to T4 timeout ;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 16 2012 20:14:30 3-Critical R04.0 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 16 2012 20:12:59 3-Critical T05.0 SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 16 2012 20:12:24 6-Notice
MDD Recovery following MDD Loss;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 16 2012 20:12:23 3-Critical T05.0 SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 16 2012 20:12:08 3-Critical R04.0 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 16 2012 20:11:57 5-Warning T202.0 Lost MDD Timeout;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 16 2012 20:11:34 3-Critical T05.0 SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:00:20 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:00:12 6-Notice
Cable Modem Reboot due to power reset ;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;

Jul 16 2012 15:43:27 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:00:12 6-Notice
Cable Modem Reboot due to T4 timeout ;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;

Jul 16 2012 15:40:51 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:00:13 6-Notice
Cable Modem Reboot due to power reset ;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;

Jul 16 2012 14:54:37 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:03:27 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:02:15 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:01:56 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:00:12 6-Notice
Cable Modem Reboot due to T4 timeout ;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;

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EG
Posts: 34,259
Registered: ‎12-24-2003

Re: Motorola 6121 Modem Constant Reboots in Elk Grove CA

‎07-17-2012 10:08 AM

Have you ever noticed the upstream power going higher in to the 50 dB range and/or the downstream power going higher than 10 dB ?

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Re: Motorola 6121 Modem Constant Reboots in Elk Grove CA

‎07-17-2012 10:56 AM

Yes. I made some changes after I posted this as I started to read some of the suggestions being offered in this forum. The coax was being split by a five way splitter. The downloads were in the 8's and the uploads were around 49, 50, and 51. I have since split the incoming coax with one split going straight to the modem and the other split to the five way. Now I am getting 11 down and 42 up. Since then I have not had one reboot. I am at work now, but will check to see if any reboots occurred during the day once I get home.
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EG
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Re: Motorola 6121 Modem Constant Reboots in Elk Grove CA

[ Edited ]

‎07-17-2012 12:51 PM - edited ‎07-17-2012 12:53 PM

Hope things hold up for you now that there is more wiggle room in the upstream although the downstream may be too high now..

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Re: Motorola 6121 Modem Constant Reboots in Elk Grove CA

‎07-17-2012 08:36 PM

Looks like I had 4 reboots today.  Less than previous days though.  It appears that the signals are now back to where they were before I made the splitter change.  Not sure the splitter change did any good and that maybe the voltages are fluctuating between day and night.  I get conciderably more drops during the day than at night. 

 

Downstream Bonding Channel Value
Channel ID60 57 58 59 
Frequency531000000 Hz 513000000 Hz 519000000 Hz 525000000 Hz 
Signal to Noise Ratio37 dB 36 dB 36 dB 37 dB 
Downstream ModulationQAM256 QAM256 QAM256 QAM256 
Power Level
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading
8 dBmV  7 dBmV  8 dBmV  8 dBmV  

 

Upstream Bonding Channel Value
Channel ID3 2 1 
Frequency35400000 Hz 23700000 Hz 30600000 Hz 
Ranging Service ID867 867 867 
Symbol Rate2.560 Msym/sec 5.120 Msym/sec 5.120 Msym/sec 
Power Level49 dBmV 50 dBmV 50 dBmV 
Upstream Modulation[3] QPSK [2] 16QAM  [3] QPSK [3] 64QAM  [3] QPSK [3] 64QAM  
Ranging StatusSuccess Success Success 

 

Signal Stats (Codewords) Bonding Channel Value
Channel ID60 57 58 59 
Total Unerrored Codewords569543604 569543375 569543465 569543642 
Total Correctable Codewords12 0 0 0 
Total Uncorrectable Codewords703 538 580 544 

 

 

Jan 01 1970 00:00:20 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:00:12 6-Notice
Cable Modem Reboot due to T4 timeout ;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 13:05:15 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:00:12 6-Notice
Cable Modem Reboot due to T4 timeout ;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 13:01:59 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:00:20 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:00:12 6-Notice
Cable Modem Reboot due to T4 timeout ;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 12:58:17 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 12:52:46 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 12:51:00 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:00:12 6-Notice
Cable Modem Reboot due to T4 timeout ;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 11:06:25 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 09:19:51 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 09:16:48 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

 

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Re: Motorola 6121 Modem Constant Reboots in Elk Grove CA

‎07-17-2012 11:05 PM

It just rebooted again and there are different log messages now....

 

Time Priority     Code     Message     Jul 17 2012 18:58:35 3-Critical I02.0 REG RSP not received;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 18:58:35 4-Error I271.0 T6 Timeout and retries exceeded;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 18:58:35 3-Critical I251.3 Registration RSP rejected unspecified reason;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 18:58:35 3-Critical I251.4 Registration RSP rejected message syntax error;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 18:58:07 3-Critical I02.0 REG RSP not received;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 18:58:07 4-Error I271.0 T6 Timeout and retries exceeded;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 18:58:07 3-Critical I251.3 Registration RSP rejected unspecified reason;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 18:58:07 3-Critical I251.4 Registration RSP rejected message syntax error;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 18:57:41 3-Critical I02.0 REG RSP not received;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 18:57:41 4-Error I271.0 T6 Timeout and retries exceeded;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 18:57:41 3-Critical I251.3 Registration RSP rejected unspecified reason;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 18:57:41 3-Critical I251.4 Registration RSP rejected message syntax error;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:00:12 6-Notice
Cable Modem Reboot due to T4 timeout ;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 18:56:51 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:00:20 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:00:12 6-Notice
Cable Modem Reboot due to T4 timeout ;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 13:05:15 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:00:12 6-Notice
Cable Modem Reboot due to T4 timeout ;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;

Jul 17 2012 13:01:59 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

Jan 01 1970 00:00:20 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=a4:7a:a4:ef:21:e6;CMTS-MAC=1c:df:0f:02:f5:67;CM-QOS=1.1;CM-VER=3.0;

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EG
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Registered: ‎12-24-2003

Re: Motorola 6121 Modem Constant Reboots in Elk Grove CA

[ Edited ]

‎07-17-2012 11:41 PM - edited ‎07-17-2012 11:44 PM

Alright it may be time for a tech visit now to investigate. If the premise facing tech/s can't find / fix any possible issue at your home then it is they who are responsible to escalate an issue to their line / maintenance dept. techs to investigate the neighborhood lines / infrastructure.

 

For reference you can call in to find out what your uSNR (upstream Signal to Noise Ratio figure is. It should be at least 30 dB, and higher is better. There may be noise ingress in the upstream /return channel/s only.

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Re: Motorola 6121 Modem Constant Reboots in Elk Grove CA

‎07-17-2012 11:45 PM

Hey, many thanks!!

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EG
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Re: Motorola 6121 Modem Constant Reboots in Elk Grove CA

‎07-17-2012 11:53 PM

Good luck with it !

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