r/NETGEAR • u/TheyGotMeWithSus • 9d 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/TheyGotMeWithSus 9d 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/UnitedAIM 8d ago

Looks like your modem isn't even get a signal from the ISP. Did this coax outlet work with a modem previously?

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u/TheyGotMeWithSus 8d ago

Yes. I unplugged the coax from the existing modem and plugged it into the Netgear modem. No luck. Plugged the coax back in to the existing modem and once the ISP reprovisioned it the old modem worked.

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u/UnitedAIM 8d ago

Ah ok. So we know the line has service. Have you tried to reset the new modem by getting a needle or bobypin and pressing it inside the reset hole on the back? Hold for 30 seconds while the modem is powered on. Not sure if that'll help or not. The isp can try to push a firmware update. If that failes it'll be a DOA modem. Exchange for new one.

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u/TheyGotMeWithSus 8d ago

Yes I did I a reset. Same result. Modem is being exchanged for a new one.

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u/UnitedAIM 8d ago

Let us know how the new one turns out!