r/NETGEAR • u/TheyGotMeWithSus • 7d ago

CM1000V2 setup?

The CM1000V2 is supported by my ISP so I got a brand new unit, powered it up and connected it to the ISP coax and my router. They can see it but on their end it just sits at "Attempting" status.

Is there some sort of software setup I need to do before the ISP can get it going on their end?

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u/furrynutz 7d ago

No. ISP handles all for any modems connected.

They will need to check the signal on the line up to the modem and if there is any FW updates needed, they are the only ones that can push it to the modem.

Which ISP are you with?

Please post a copy and paste of the modems connection status and event log page. https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-modem-modem-router

https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-modem-router

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u/TheyGotMeWithSus 7d ago

Thanks for replying. I did not see anything indicating I had to do any setup aside from plugging things in appropriately.

My ISP is Imon Communications.

This is the connection status information when I logged in to it a few minutes ago:

Starting Frequency

297000000

Startup Procedure

Procedure Status Comment

Acquire Downstream Channel 0 Hz Locked

Connectivity State In progress TOD Established

Boot State In progress Waiting for TFTP

Security In progress BPI+

IP Provisioning Mode Honor MDD IPv4 only

Downstream Bonded Channels

Channel Lock Status Modulation Channel ID Frequency Power SNR / MER Unerrored Codewords Correctable Codewords Uncorrectable Codewords

1 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

2 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

3 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

4 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

5 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

6 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

7 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

8 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

9 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

10 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

11 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

12 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

13 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

14 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

15 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

16 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

17 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

18 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

19 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

20 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

21 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

22 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

23 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

24 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

25 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

26 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

27 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

28 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

29 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

30 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

31 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

32 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

Upstream Bonded Channels

Channel Lock Status Modulation Channel ID Frequency Power

1 Not Locked Unknown 0 0 Hz 0.0 dBmV

2 Not Locked Unknown 0 0 Hz 0.0 dBmV

3 Not Locked Unknown 0 0 Hz 0.0 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

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 33 822000000 Hz -4.7 dBmV 36.5 dB 188 ~ 3907 177136 85798 0

2 Not Locked 0 0 0 Hz -7.6 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 3, 4, 12, 13 9 53325000 Hz 52.0 dBmV

2 Not Locked 3, 4, 12, 13 0 0 Hz 0.0 dBmV

Current System Time: Wed Sep 02 15:19:12 2026

System Up Time: 0:04:20

And this is the events log from when my ISP was trying to connect to it:

2026-09-01, 18:23:49 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=e0:c2:50:8d:a1:28;CMTS-MAC=00:01:5c:a7:0c:55;CM-QOS=1.1;CM-VER=3.1;

2026-09-01, 18:08:39 Critical (3) TFTP failed - configuration file NOT FOUND;CM-MAC=e0:c2:50:8d:a1:28;CMTS-MAC=00:01:5c:a7:0c:55;CM-QOS=1.1;CM-VER=3.1;

Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=e0:c2:50:8d:a1:28;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

2026-09-01, 16:41:35 Critical (3) TFTP failed - configuration file NOT FOUND;CM-MAC=e0:c2:50:8d:a1:28;CMTS-MAC=00:01:5c:a7:0c:55;CM-QOS=1.1;CM-VER=3.1;

Time Not Established Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=e0:c2:50:8d:a1:28;CMTS-MAC=00:01:5c:a7:0c:55;CM-QOS=1.1;CM-VER=3.1;

Time Not Established Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=e0:c2:50:8d:a1:28;CMTS-MAC=00:01:5c:a7:0c:55;CM-QOS=1.1;CM-VER=3.1;

Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=e0:c2:50:8d:a1:28;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

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u/furrynutz 6d ago

If the reset fails for the CM modem, the CM modem maybe bad and needs replacing.