Netgear CM2000 has blinking white downstream light

[Puch96]

Hello.

I was wondering if anyone is experiencing an issue with Netgear CM2000 cable modem on Xfinity.

My downstream light will blink white.  I do not have any connection issues, but I notice the following on the logs:

Time	Priority	Description
Tue Mar 30 11:05:14 2021	(Notice (6))	CM-STATUS message sent. Event Type Code: 22; Chan ID: 37; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxxxxxxx;CMTS-MAC=xxxxxxxxxx;CM-QOS=1.1;CM-VER=3.1;
Tue Mar 30 11:04:41 2021	(Notice (6))	CM-STATUS message sent. Event Type Code: 20; Chan ID: 37; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxxxxxxx;CMTS-MAC=xxxxxxxxx;CM-QOS=1.1;CM-VER=3.1;
Tue Mar 30 09:17:03 2021	(Notice (6))	CM-STATUS message sent. Event Type Code: 22; Chan ID: 37; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxxxxxxxx;CMTS-MAC=xxxxxxxxx;CM-QOS=1.1;CM-VER=3.1;
Tue Mar 30 09:16:28 2021	(Notice (6))	CM-STATUS message sent. Event Type Code: 20; Chan ID: 37; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxxxxxx;CMTS-MAC=00:01:5c:71:9e:7c;CM-QOS=1.1;CM-VER=3.1;
Tue Mar 30 09:07:53 2021	(Notice (6))	CM-STATUS message sent. Event Type Code: 22; Chan ID: 37; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxxxxxx;CMTS-MAC=xxxxxxxxx;CM-QOS=1.1;CM-VER=3.1;
Tue Mar 30 09:07:25 2021	(Notice (6))	CM-STATUS message sent. Event Type Code: 20; Chan ID: 37; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xxxxxxxxx;CMTS-MAC=xxxxxxxxx;CM-QOS=1.1;CM-VER=3.1;

Here is my channel info:

Startup Procedure

Procedure Status Comment Acquire Downstream Channel 507000000 Hz Locked Connectivity State OK Operational Boot State OK Operational Security Enabled BPI+

Downstream Bonded Channels

Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables 1 Locked QAM256 5 507000000 Hz -2.5 dBmV 40.6 dB 0 0 2 Locked QAM256 2 489000000 Hz -2.0 dBmV 40.7 dB 0 0 3 Locked QAM256 3 495000000 Hz -2.0 dBmV 40.7 dB 0 0 4 Locked QAM256 4 501000000 Hz -2.1 dBmV 40.7 dB 0 0 5 Locked QAM256 6 513000000 Hz -2.7 dBmV 40.5 dB 0 0 6 Locked QAM256 7 519000000 Hz -2.9 dBmV 40.4 dB 0 0 7 Locked QAM256 8 525000000 Hz -2.9 dBmV 40.5 dB 0 0 8 Locked QAM256 9 531000000 Hz -2.9 dBmV 40.5 dB 0 0 9 Locked QAM256 10 537000000 Hz -3.0 dBmV 40.4 dB 0 0 10 Locked QAM256 11 543000000 Hz -3.1 dBmV 40.4 dB 0 0 11 Locked QAM256 12 549000000 Hz -3.3 dBmV 40.2 dB 0 0 12 Locked QAM256 13 555000000 Hz -3.4 dBmV 40.2 dB 0 0 13 Locked QAM256 14 561000000 Hz -3.3 dBmV 40.2 dB 0 0 14 Locked QAM256 15 567000000 Hz -3.4 dBmV 40.0 dB 0 0 15 Locked QAM256 16 573000000 Hz -3.4 dBmV 40.0 dB 0 0 16 Locked QAM256 17 579000000 Hz -3.6 dBmV 40.0 dB 0 0 17 Locked QAM256 18 585000000 Hz -3.9 dBmV 39.9 dB 0 0 18 Locked QAM256 19 591000000 Hz -4.0 dBmV 39.8 dB 0 0 19 Locked QAM256 20 597000000 Hz -3.9 dBmV 39.9 dB 0 0 20 Locked QAM256 21 603000000 Hz -3.9 dBmV 39.9 dB 0 0 21 Locked QAM256 22 609000000 Hz -3.9 dBmV 39.9 dB 0 0 22 Locked QAM256 23 615000000 Hz -3.8 dBmV 39.9 dB 0 0 23 Locked QAM256 24 621000000 Hz -3.5 dBmV 40.0 dB 0 0 24 Locked QAM256 25 627000000 Hz -3.2 dBmV 40.2 dB 0 0 25 Locked QAM256 26 633000000 Hz -2.8 dBmV 40.3 dB 0 0 26 Locked QAM256 27 639000000 Hz -2.9 dBmV 40.1 dB 0 0 27 Locked QAM256 28 645000000 Hz -2.8 dBmV 40.1 dB 0 0 28 Locked QAM256 29 651000000 Hz -2.9 dBmV 40.2 dB 0 0 29 Locked QAM256 30 657000000 Hz -2.9 dBmV 40.2 dB 0 0 30 Locked QAM256 31 663000000 Hz -3.0 dBmV 40.1 dB 0 0 31 Locked QAM256 32 669000000 Hz -3.0 dBmV 40.1 dB 0 0 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 35600000 Hz 48.0 dBmV 2 Locked ATDMA 2 5120 29200000 Hz 46.8 dBmV 3 Locked ATDMA 3 5120 22800000 Hz 46.8 dBmV 4 Locked ATDMA 4 5120 16400000 Hz 45.8 dBmV 5 Locked ATDMA 5 2560 40400000 Hz 47.3 dBmV 6 Not Locked Unknown 0 0 0 Hz 0.0 dBmV 7 Not Locked Unknown 0 0 0 Hz 0.0 dBmV 8 Not Locked Unknown 0 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 ,1 ,2 ,3 37 690000000 Hz -2.5 dBmV 39.8 dB 1228 ~ 2867 354658314 353772407 2 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

[FURRYe38]

Netgear has set up a community forum specifically for the cable modem product. Most of the people who watch that forum are more likely to have experience with cable modem and know how to work it better than those of us who follow this "Orbi AX" forum. Might be more likely to find someone who has a solution if the question is posted there:
https://community.netgear.com/t5/Cable-Modems-Routers/bd-p/home-cable-modems-routers

Thank you.

[Puch96]

Oops.  Sorry. Did not notice forum for Orbi AX.  I re-posted on correct modem forum.

[FURRYe38]

[JackyShen]

It seems the signal have a few noise but it will not effect too much because it come back quickly.

The LED issue may the software issue. I guess....

From D3.1 Spec

Type 20: NCP profile failure.

Type 22: NCP profile recovery.

[FURRYe38]

Please post about this here:

https://community.netgear.com/t5/Cable-Modems-Routers/CM2000-Guys-I-need-help-ASAP/m-p/2080685#M3134...

Thanks

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@JackyShen wrote:

It seems the signal have a few noise but it will not effect too much because it come back quickly.

The LED issue may the software issue. I guess....

From D3.1 Spec

Type 20: NCP profile failure.

Type 22: NCP profile recovery.

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[Southxpaw]

Hi, I also bought a netgear cm2000. This is actually my 2nd one. My first modem worked for about A month and a half. One day it just shut off and never came back on and so I got it replaced. But on both modems, the downstream icon keeps blinking. It’s very annoying. Has there been a fix for it?

[FURRYe38]

Please post a copy and paste of the modems connection status page.
Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box. 
Be sure your using good quality RG6 coax cable up to the modem. 
Be sure to power OFF the modem for 1 minute them back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Mod...

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@Southxpaw wrote:
Hi, I also bought a netgear cm2000. This is actually my 2nd one. My first modem worked for about A month and a half. One day it just shut off and never came back on and so I got it replaced. But on both modems, the downstream icon keeps blinking. It’s very annoying. Has there been a fix for it?

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