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CM1100 Modem Issues

Regular Visitor

CM1100 Modem Issues

Having an issue with our CM1100 modem we purchased for use with our Xfinity internet subscription. For reference we have a modem and router we purchased from Netgear (CM1100 and R7000P respectively.) Our modem has been experiencing problems with maintaining a connection to the actual internet. Wondering if this has to do with the modem itself or with our connection to our ISP. Any help would be appreciated!

 

Here are some of the log entries from our modem:

 

2019-02-04, 13:59:45
Warning (5)
Dynamic Range Window violation


2019-02-04, 13:59:45
Warning (5)
RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;

 

2019-02-04, 13:58:10
Warning (5)
RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:57:14
Critical (3)
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;

 

2019-02-04, 13:57:00

Warning (5)
Dynamic Range Window violation

 

 

 

Expert

Re: CM1100 Modem Issues

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




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Regular Visitor

Re: CM1100 Modem Issues

 

Okay, here is everything it says.

 

2019-02-04, 13:59:45
Warning (5)
Dynamic Range Window violation


2019-02-04, 13:59:45
Warning (5)
RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:59:45
Warning (5)
Dynamic Range Window violation


2019-02-04, 13:59:45
Warning (5)
RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:59:28
Warning (5)
Dynamic Range Window violation


2019-02-04, 13:59:28
Warning (5)
RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:59:28
Warning (5)
Dynamic Range Window violation


2019-02-04, 13:59:28
Warning (5)
RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:59:28
Warning (5)
Dynamic Range Window violation


2019-02-04, 13:59:28
Warning (5)
RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:58:26
Warning (5)
Dynamic Range Window violation


2019-02-04, 13:58:26
Warning (5)
RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:58:26
Warning (5)
Dynamic Range Window violation


2019-02-04, 13:58:25
Warning (5)
RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:58:21
Warning (5)
Dynamic Range Window violation


2019-02-04, 13:58:21
Warning (5)
RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:58:10
Warning (5)
Dynamic Range Window violation


2019-02-04, 13:58:10
Warning (5)
RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:57:14
Critical (3)
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:57:00
Warning (5)
Dynamic Range Window violation


2019-02-04, 13:57:00
Warning (5)
RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:49:11
Notice (6)
Honoring MDD; IP provisioning mode = IPv6


2019-02-04, 13:48:54
Critical (3)
Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:48:44
Critical (3)
No Ranging Response received - T3 time-out;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:48:41
Critical (3)
Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:43:35
Critical (3)
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:43:34
Warning (5)
Dynamic Range Window violation


2019-02-04, 13:43:34
Warning (5)
RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:43:34
Warning (5)
Dynamic Range Window violation


2019-02-04, 13:43:34
Warning (5)
RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:43:34
Warning (5)
Dynamic Range Window violation


2019-02-04, 13:43:34
Warning (5)
RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:42:57
Notice (6)
CM-STATUS message sent. Event Type Code: 8; Chan ID: 3; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:42:48
Critical (3)
16 consecutive T3 timeouts while trying to range on upstream channel 0;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:42:48
Critical (3)
Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:41:45
Critical (3)
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:41:45
Warning (5)
Dynamic Range Window violation


2019-02-04, 13:41:45
Warning (5)
RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;


2019-02-04, 13:41:45
Warning (5)
Dynamic Range Window violation


2019-02-04, 13:41:45
Warning (5)
RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=14:59:c0:74:02:70;CMTS-MAC=00:01:5c:a6:0c:4f;CM-QOS=1.1;CM-VER=3.1;

Expert

Re: CM1100 Modem Issues

Thanks but sorry. Those are the balance of the error log entries. It indicates that something is indeed going on but I asked you to please post the Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.



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I am a Customer Expert volunteering my time to help other customers here in the Forums.
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Regular Visitor

Re: CM1100 Modem Issues

Ah, forgive me for the confusion. Here it is:

 

NETGEAR Modem CM1100

<tabindex=-1>Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR / MER Unerrored Codewords Correctable Codewords Uncorrectable Codewords
1 Locked QAM256 31 645000000 Hz -7.1 dBmV 40.4 dB 955079245 62 87
2 Locked QAM256 1 453000000 Hz -2.9 dBmV 43.3 dB 867463993 23 84
3 Locked QAM256 2 459000000 Hz -2.7 dBmV 43.2 dB 867473366 46 76
4 Locked QAM256 3 465000000 Hz -3.2 dBmV 43.0 dB 867481677 16 63
5 Locked QAM256 4 471000000 Hz -3.3 dBmV 42.8 dB 867490340 23 72
6 Locked QAM256 5 477000000 Hz -2.7 dBmV 43.2 dB 867500012 15 72
7 Locked QAM256 6 483000000 Hz -2.9 dBmV 43.1 dB 867510193 22 71
8 Locked QAM256 7 489000000 Hz -3.1 dBmV 42.9 dB 867519242 23 70
9 Locked QAM256 8 495000000 Hz -3.4 dBmV 42.7 dB 867529893 16 69
10 Locked QAM256 9 519000000 Hz -4.4 dBmV 38.9 dB 867539144 12 50
11 Locked QAM256 10 525000000 Hz -4.3 dBmV 42.3 dB 867548691 13 53
12 Locked QAM256 11 531000000 Hz -4.2 dBmV 42.2 dB 867558072 9 51
13 Locked QAM256 12 537000000 Hz -3.9 dBmV 42.5 dB 867567584 11 50
14 Locked QAM256 13 543000000 Hz -4.3 dBmV 42.3 dB 867576269 8 34
15 Locked QAM256 14 549000000 Hz -3.9 dBmV 42.7 dB 867587068 10 37
16 Locked QAM256 15 555000000 Hz -4.4 dBmV 42.4 dB 867597124 11 44
17 Locked QAM256 16 561000000 Hz -4.4 dBmV 42.3 dB 867609611 12 45
18 Locked QAM256 17 567000000 Hz -4.6 dBmV 40.8 dB 867618869 7 41
19 Locked QAM256 18 573000000 Hz -4.8 dBmV 42.2 dB 867628753 15 50
20 Locked QAM256 19 579000000 Hz -5.2 dBmV 42.0 dB 867638208 11 59
21 Locked QAM256 20 585000000 Hz -4.8 dBmV 42.1 dB 867647041 9 53
22 Locked QAM256 21 591000000 Hz -5.0 dBmV 42.0 dB 867655839 19 43
23 Locked QAM256 22 597000000 Hz -5.9 dBmV 41.5 dB 867665759 16 49
24 Locked QAM256 23 603000000 Hz -6.2 dBmV 41.4 dB 867675096 9 65
25 Locked QAM256 24 609000000 Hz -7.3 dBmV 40.6 dB 867684134 14 65
26 Locked QAM256 25 615000000 Hz -7.7 dBmV 39.6 dB 867693289 15 73
27 Locked QAM256 26 621000000 Hz -8.1 dBmV 40.1 dB 867697169 13 68
28 Locked QAM256 27 627000000 Hz -7.0 dBmV 40.6 dB 867690048 14 59
29 Locked QAM256 28 633000000 Hz -7.2 dBmV 40.6 dB 867685995 19 53
30 Locked QAM256 30 639000000 Hz -6.5 dBmV 41.0 dB 867571617 17 48
31 Locked QAM256 32 651000000 Hz -6.5 dBmV 41.1 dB 867574273 12 51
32 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

 

 

 

<tabindex=-1>Upstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power
1 Locked ATDMA 1 36500000 Hz 48.3 dBmV
2 Locked ATDMA 2 30100000 Hz 48.8 dBmV
3 Locked ATDMA 3 23700000 Hz 50.3 dBmV
4 Not Locked Unknown 0 0 Hz 0.0 dBmV
5 Not Locked Unknown 0 0 Hz 0.0 dBmV
6 Not Locked Unknown 0 0 Hz 0.0 dBmV
7 Not Locked Unknown 0 0 Hz 0.0 dBmV
8 Not Locked Unknown 0 0 Hz 0.0 dBmV

 

 

 

 

<tabindex=-1>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, 255 29 690000000 Hz -7.1 dBmV 38.3 dB 1108 ~ 2987 1742332764 1716416323 0
2 Not Locked 0, 255 0 0 Hz -3.0 dBmV 0.0 dB 0 ~ 4095 0 0 0

 

 

<tabindex=-1>Upstream OFDMA Channels
Channel Lock Status Modulation / Profile ID Channel ID Frequency Power
1 Not Locked Unknown 0 0 Hz 0 dBmV
2 Not Locked Unknown 0 0 Hz 0 dBmV

 

Is this what you are looking for?

Regular Contributor

Re: CM1100 Modem Issues

@zaabaado Hi ... What is/was the version of your CM1100's Firmware at that time in Feb? .... latest as of May 1, 2019 is V2.01.02.