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mmamm
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Frequent Visitor

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5 Messages

Sunday, May 17th, 2020 12:00 PM

Closed

Frequent Interrupted connection

Hello,

 

I am experiencing lots of critical errors on my modem. Please help with reading this log. Upgraded my modem to Netgear cm1200 issue persist. Also just mremoved a splitter as reccomended in some forum.

thank you.

 

Mmamm

 

 

Event Log

   

 

  
 

 

 

Time

Priority

Description

Sun May 17 10:30:55 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 8; Chan ID: 1 3; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:30:54 2020

Critical (3)

No Ranging Response received - T3 time-out;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:30:52 2020

Critical (3)

16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:30:52 2020

Critical (3)

Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:30:52 2020

Critical (3)

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:25:57 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 8; Chan ID: 1; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:25:44 2020

Critical (3)

16 consecutive T3 timeouts while trying to range on upstream channel 0;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:25:44 2020

Critical (3)

Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:25:44 2020

Critical (3)

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:24:59 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 4; Chan ID: 36; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:24:55 2020

Critical (3)

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:24:41 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:24:41 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 5; Chan ID: 15 16 17 18 19 21 22 23 27 31 33 36; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:24:37 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 23; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:24:37 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 22; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:24:32 2020

Critical (3)

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:23:47 2020

Critical (3)

No Ranging Response received - T3 time-out;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:23:35 2020

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:22:29 2020

Warning (5)

MDD message timeout;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:22:29 2020

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:22:23 2020

Warning (5)

MDD message timeout;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:22:23 2020

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:15:35 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:14:19 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:06:10 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:05:26 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:04:16 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:03:51 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:01:05 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 10:00:17 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 09:59:16 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 09:58:16 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 09:54:49 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 09:54:19 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 09:47:20 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 09:46:46 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 09:42:03 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 09:40:24 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 22; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 09:40:14 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 20; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

Sun May 17 09:38:33 2020

Notice (6)

CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-[MAC removed};CMTS-MAC=[MAC removed];CM-QOS=1.1;CM-VER=3.1;

 
 

 
 

 

Question

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Updated 

3 years ago

2.1K

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This conversation is no longer open for comments or replies and is no longer visible to community members.

EG

Expert

 • 

103.5K Messages

4 years ago

The upstream power is in spec. Please also post the rest of the downstream channel stats.

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0

EG

Expert

 • 

103.5K Messages

4 years ago

You need to post the signal status numbers as well.

 

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


0

0

mmamm

Frequent Visitor

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5 Messages

4 years ago

Would this work? Thanks.

 

Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 1 5120 Ksym/sec 17300000 Hz 41.3 dBmV
2 Locked ATDMA 2 5120 Ksym/sec 23700000 Hz 41.5 dBmV
3 Locked ATDMA 3 5120 Ksym/sec 30300000 Hz 41 dBmV
4 Locked ATDMA 4 5120 Ksym/sec 36700000 Hz 40.5 dBmV
5 Locked ATDMA 5 1280 Ksym/sec 41200000 Hz 42 dBmV
6 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
 
Downstream OFDM Channels
Channel Lock
Status		 Modulation /
Profile ID		 Channel
ID		 Frequency Power SNR /
MER		 Active Subcarrier
Number Range		 Unerrored
Codewords		 Correctable
Codewords		 Uncorrectable
Codewords
1 Locked 0 ,1 ,2 ,3 48 850000000 Hz 10.4 dBmV 41.3 dB 1108 ~ 2987 129301363 8029618 2079
2 Not Locked 0 0 0 Hz 0 dBmV 0.0 dB 0 ~ 4095 0 0 0
 

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0

mmamm

Frequent Visitor

 • 

5 Messages

4 years ago

Signal status: GOOD

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0

mmamm

Frequent Visitor

 • 

5 Messages

4 years ago

Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 8 447000000 Hz 7 dBmV 40.9 dB 638 1012
2 Locked QAM256 9 453000000 Hz 7 dBmV 40.9 dB 10828 30485
3 Locked QAM256 10 459000000 Hz 7.2 dBmV 40.9 dB 11533 32787
4 Locked QAM256 11 465000000 Hz 7.1 dBmV 40.9 dB 11685 33105
5 Locked QAM256 12 471000000 Hz 7.1 dBmV 40.8 dB 12135 34298
6 Locked QAM256 13 477000000 Hz 7.1 dBmV 40.9 dB 13475 33814
7 Locked QAM256 14 483000000 Hz 7 dBmV 40.8 dB 24583 51566
8 Locked QAM256 15 489000000 Hz 7.1 dBmV 40.8 dB 4092 9803
9 Locked QAM256 16 495000000 Hz 7.3 dBmV 40.9 dB 3863 10436
10 Locked QAM256 17 507000000 Hz 7.6 dBmV 41.1 dB 2262 5679
11 Locked QAM256 18 513000000 Hz 7.5 dBmV 41 dB 4058 10067
12 Locked QAM256 19 519000000 Hz 7.6 dBmV 41 dB 3932 9649
13 Locked QAM256 20 525000000 Hz 7.6 dBmV 41 dB 4332 11287
14 Locked QAM256 21 531000000 Hz 7.6 dBmV 40.9 dB 4233 10239
15 Locked QAM256 22 537000000 Hz 7.8 dBmV 41 dB 1687 4544
16 Locked QAM256 23 543000000 Hz 7.6 dBmV 40.9 dB 4322 12337
17 Locked QAM256 24 549000000 Hz 7.9 dBmV 41 dB 6030 13839
18 Locked QAM256 25 555000000 Hz 7.9 dBmV 41 dB 4832 13230
19 Locked QAM256 26 561000000 Hz 8 dBmV 41 dB 20484 46081
20 Locked QAM256 27 567000000 Hz 8.1 dBmV 41 dB 20382 33513
21 Locked QAM256 28 573000000 Hz 8.2 dBmV 40.9 dB 12211 32534
22 Locked QAM256 29 579000000 Hz 8.2 dBmV 40.9 dB 10964 31144
23 Locked QAM256 30 585000000 Hz 8.4 dBmV 41 dB 10506 30431
24 Locked QAM256 31 591000000 Hz 8.5 dBmV 41 dB 11046 31168
25 Locked QAM256 32 597000000 Hz 8.7 dBmV 41 dB 10750 30558
26 Locked QAM256 33 603000000 Hz 8.8 dBmV 40.9 dB 9279 26835
27 Locked QAM256 34 609000000 Hz 8.7 dBmV 41 dB 15039 35477
28 Locked QAM256 35 615000000 Hz 8.8 dBmV 41 dB 10079 30518
29 Locked QAM256 36 621000000 Hz 9 dBmV 40.9 dB 10127 30001
30 Locked QAM256 37 627000000 Hz 9.3 dBmV 41 dB 10909 32817
31 Locked QAM256 38 633000000 Hz 9.5 dBmV 41.1 dB 10411 31126
32 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
 
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 1 5120 Ksym/sec 17300000 Hz 41 dBmV
2 Locked ATDMA 2 5120 Ksym/sec 23700000 Hz 41.3 dBmV
3 Locked ATDMA 3 5120 Ksym/sec 30300000 Hz 40.8 dBmV
4 Locked ATDMA 4 5120 Ksym/sec 36700000 Hz 40 dBmV
5 Locked ATDMA 5 1280 Ksym/sec 41200000 Hz 41.5 dBmV
6 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
 
Downstream OFDM Channels
Channel Lock
Status		 Modulation /
Profile ID		 Channel
ID		 Frequency Power SNR /
MER		 Active Subcarrier
Number Range		 Unerrored
Codewords		 Correctable
Codewords		 Uncorrectable
Codewords
1 Locked 0 ,1 ,2 ,3 48 850000000 Hz 11.1 dBmV 41.3 dB 1108 ~ 2987 471560842 22693580 2079
2 Not Locked 0 0 0 Hz 0 dBmV 0.0 dB 0 ~ 4095 0 0 0
 
Upstream OFDMA Channels
Channel Lock Status Modulation / Profile ID Channel ID Frequency Power
1 Not Locked 0 0 0 Hz 0 dBmV
2 Not Locked 0 0 0 Hz 0 dBmV
 
Extended Upstream Transmit Power
Enable Extended Upstream Transmit Power
 
 
 
 
 

0

0

EG

Expert

 • 

103.5K Messages

4 years ago

All of the signal stats are good 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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0

CCChe

Official Employee

 • 

6.9K Messages

4 years ago

Hi @mmamm, 

 

Thank you for posting to the Xfinity Forum. We appreciate you for posting your signals so we could help isolate the cause of your connectivity issues. I agree with @EG. I'd like to check the CMTS, node health, and historical plots so I can help find a resolution. Can you please send me a private message? To send a private message, click on "ComcastChe" and then click send a message.   

 

0

mmamm

Frequent Visitor

 • 

5 Messages

4 years ago

Hi, still awaiting for your input on this issue.

0

0

EG

Expert

 • 

103.5K Messages

4 years ago

I'm re-escalating this.

1

0

XfinityJoeTru

Official Employee

 • 

7K Messages

4 years ago

Hi mmamm. Apologies for our delay in getting back with your. I found your message with ComcastChe and I checked your account and responded back to you. Thanks for hanging in there with us! 

2

EG

Expert

 • 

103.5K Messages

3 years ago

Year old dead thread now being closed.

0

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