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Re: Netgear CM1000 keeps dropping

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Re: Netgear CM1000 keeps dropping

I have the same issue. CM1000 and during the late afternoon and all evening I get this.

1054 packets transmitted, 460 packets received, 56.4% packet loss

round-trip min/avg/max/stddev = 28.784/49.074/2047.371/125.951 ms

 

My Modem stats...please, someone help me. Is it the cable or my modem????

2018-06-12, 16:33:16 Warning (5) Dynamic Range Window violation
2018-06-12, 16:33:16 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:33:16 Warning (5) Dynamic Range Window violation
2018-06-12, 16:33:16 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:33:16 Warning (5) Dynamic Range Window violation
2018-06-12, 16:33:16 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:32:56 Warning (5) Dynamic Range Window violation
2018-06-12, 16:32:56 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:32:56 Warning (5) Dynamic Range Window violation
2018-06-12, 16:32:56 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:32:56 Warning (5) Dynamic Range Window violation
2018-06-12, 16:32:56 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:32:36 Warning (5) Dynamic Range Window violation
2018-06-12, 16:32:36 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:32:36 Warning (5) Dynamic Range Window violation
2018-06-12, 16:32:36 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:32:36 Warning (5) Dynamic Range Window violation
2018-06-12, 16:32:36 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:32:16 Warning (5) Dynamic Range Window violation
2018-06-12, 16:32:16 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:32:16 Warning (5) Dynamic Range Window violation
2018-06-12, 16:32:16 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:32:16 Warning (5) Dynamic Range Window violation
2018-06-12, 16:32:16 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:31:56 Warning (5) Dynamic Range Window violation
2018-06-12, 16:31:56 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:31:56 Warning (5) Dynamic Range Window violation
2018-06-12, 16:31:56 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:31:56 Warning (5) Dynamic Range Window violation
2018-06-12, 16:31:56 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:31:56 Warning (5) Dynamic Range Window violation
2018-06-12, 16:31:56 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:31:56 Warning (5) Dynamic Range Window violation
2018-06-12, 16:31:56 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:31:56 Warning (5) Dynamic Range Window violation
2018-06-12, 16:31:56 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:31:56 Warning (5) Dynamic Range Window violation
2018-06-12, 16:31:56 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;
2018-06-12, 16:31:55 Warning (5) Dynamic Range Window violation
2018-06-12, 16:31:55 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=a0:04:60:fd:30:f8;CMTS-MAC=70:6e:6d:2d:61:cd;CM-QOS=1.1;CM-VER=3.1;

 


Frequency start Value
This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.
Starting Frequency
573000000
Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 573000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Security Enable BPI+
IP Provisioning Mode Honor MDD IPv6 only
Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR / MER Unerrored Codewords Correctable Codewords Uncorrectable Codewords
1 Locked QAM256 17 573000000 Hz -4.8 dBmV 41.0 dB 4134243622 0 0
2 Locked QAM256 1 477000000 Hz -4.9 dBmV 41.4 dB 4133009909 234 0
3 Locked QAM256 2 483000000 Hz -4.8 dBmV 41.5 dB 4133025163 323 29
4 Locked QAM256 3 489000000 Hz -4.8 dBmV 41.4 dB 4133040659 287 1
5 Locked QAM256 4 495000000 Hz -4.8 dBmV 41.4 dB 4133052085 116 0
6 Locked QAM256 5 501000000 Hz -4.9 dBmV 41.4 dB 4133067768 11 0
7 Locked QAM256 6 507000000 Hz -4.9 dBmV 41.1 dB 4133080512 3 0
8 Locked QAM256 7 513000000 Hz -4.7 dBmV 41.4 dB 4133097381 0 0
9 Locked QAM256 8 519000000 Hz -5.0 dBmV 41.3 dB 4133268763 21 0
10 Locked QAM256 9 525000000 Hz -5.1 dBmV 41.3 dB 4133285780 0 0
11 Locked QAM256 10 531000000 Hz -4.9 dBmV 41.2 dB 4133299511 1 0
12 Locked QAM256 11 537000000 Hz -4.9 dBmV 41.1 dB 4133312355 7 0
13 Locked QAM256 12 543000000 Hz -5.0 dBmV 41.0 dB 4133324992 0 0
14 Locked QAM256 13 549000000 Hz -4.7 dBmV 41.2 dB 4133342022 0 0
15 Locked QAM256 14 555000000 Hz -4.6 dBmV 41.1 dB 4133355142 5 0
16 Locked QAM256 15 561000000 Hz -4.6 dBmV 41.1 dB 4133370865 14 0
17 Locked QAM256 16 567000000 Hz -4.6 dBmV 41.2 dB 3409186879 0 0
18 Locked QAM256 18 579000000 Hz -5.0 dBmV 40.8 dB 3409208406 0 0
19 Locked QAM256 19 585000000 Hz -5.0 dBmV 40.9 dB 3409228885 1 0
20 Locked QAM256 20 591000000 Hz -4.9 dBmV 40.9 dB 3409248948 0 0
21 Locked QAM256 21 597000000 Hz -5.1 dBmV 40.9 dB 3409270585 1 0
22 Locked QAM256 22 603000000 Hz -4.9 dBmV 40.7 dB 3409287692 2 0
23 Locked QAM256 23 609000000 Hz -4.7 dBmV 40.8 dB 3409312103 0 0
24 Locked QAM256 24 615000000 Hz -4.8 dBmV 40.7 dB 3409331749 1 0
25 Locked QAM256 25 621000000 Hz -4.3 dBmV 41.1 dB 3409387380 1 0
26 Locked QAM256 26 627000000 Hz -3.9 dBmV 41.0 dB 3409408059 1 0
27 Locked QAM256 27 633000000 Hz -3.7 dBmV 41.2 dB 3409427810 0 0
28 Locked QAM256 28 639000000 Hz -3.8 dBmV 41.2 dB 3409445956 1 0
29 Locked QAM256 29 645000000 Hz -3.8 dBmV 41.2 dB 3409461703 0 0
30 Locked QAM256 30 651000000 Hz -3.8 dBmV 41.2 dB 3409460376 0 0
31 Locked QAM256 31 657000000 Hz -4.1 dBmV 40.8 dB 3409463097 0 0
32 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0
Upstream Bonded Channels (Partial Service)
Channel Lock Status Modulation Channel ID Frequency Power
1 Locked ATDMA 1 37800000 Hz 55.3 dBmV
2 Locked ATDMA 2 31400000 Hz 55.3 dBmV
3 Locked ATDMA 3 25000000 Hz 54.8 dBmV
4 Locked ATDMA 4 18600000 Hz 57.3 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
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 0 159 702000000 Hz -1.9 dBmV 40.0 dB 1126 ~ 2969 10758331385 182803877 0
2 Not Locked 0 0 0 Hz -9.4 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 Unknown 0 0 Hz 0 dBmV
2 Not Locked Unknown 0 0 Hz 0 dBmV
Current System Time: Tue Jun 12 16:34:09 2018

Expert

Re: Netgear CM1000 keeps dropping

The upstream power is too high / out of spec. And the downstream power is on the weak side. That can cause random disconnects, spontaneous re-booting of the modem, and speed and latency problems.

In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.