I am facing a recurring issue (every few days or so and most often overnight) where my connection drops. It's always quickly resolved after a reboot. Modem is Netgear CM2000 and I'll drop event logs below. Any ideas? I am suspicious it started right after a AT&T tech was on our utility pole recently doing work unrelated.
| Time |
Priority |
Description |
| Thu Aug 28 07:51:17 2025 |
(Notice (6)) |
DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC= |
| Thu Aug 28 07:51:11 2025 |
(Notice (6)) |
TLV-11 - unrecognized OID;CM- |
| Time Not Established |
(Notice (6)) |
Honoring MDD; IP provisioning mode = IPv6 |
| Time Not Established |
(Critical (3)) |
No Ranging Response received - T3 time-out;CM |
| Time Not Established |
(Critical (3)) |
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM- |
| Time Not Established |
(Critical (3)) |
|
|
|
|
| Time Not Established |
(Critical (3)) |
No Ranging Response received - T3 time-out;CM- |
| Time Not Established |
(Critical (3)) |
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-; |
| Time Not Established |
(Critical (3)) |
No Ranging Response received - T3 time-out;CM-; |
| Time Not Established |
(Critical (3)) |
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-; |
| Startup Procedure |
| Procedure |
Status |
Comment |
| Acquire Downstream Channel |
507000000 Hz |
Locked |
| Connectivity State |
OK |
Operational |
| Boot State |
OK |
Operational |
| Security |
Enabled |
BPI+ |
| IP Provisioning Mode |
Honor MDD |
IPv6 only |
|
|
|
| Downstream Bonded Channels |
| Channel |
Lock Status |
Modulation |
Channel ID |
Frequency |
Power |
SNR |
Correctables |
Uncorrectables |
| 1 |
Locked |
QAM256 |
9 |
507000000 Hz |
5.2 dBmV |
40.3 dB |
3 |
0 |
| 2 |
Locked |
QAM256 |
1 |
459000000 Hz |
4.4 dBmV |
39.8 dB |
3 |
0 |
| 3 |
Locked |
QAM256 |
2 |
465000000 Hz |
4.8 dBmV |
40.0 dB |
2 |
0 |
| 4 |
Locked |
QAM256 |
3 |
471000000 Hz |
4.6 dBmV |
40.0 dB |
2 |
0 |
| 5 |
Locked |
QAM256 |
4 |
477000000 Hz |
4.9 dBmV |
40.1 dB |
2 |
0 |
| 6 |
Locked |
QAM256 |
5 |
483000000 Hz |
4.8 dBmV |
40.1 dB |
3 |
0 |
| 7 |
Locked |
QAM256 |
6 |
489000000 Hz |
4.9 dBmV |
40.2 dB |
3 |
0 |
| 8 |
Locked |
QAM256 |
7 |
495000000 Hz |
4.8 dBmV |
40.2 dB |
2 |
0 |
| 9 |
Locked |
QAM256 |
8 |
501000000 Hz |
5.0 dBmV |
40.3 dB |
4 |
0 |
| 10 |
Locked |
QAM256 |
10 |
513000000 Hz |
4.9 dBmV |
40.3 dB |
3 |
0 |
| 11 |
Locked |
QAM256 |
11 |
519000000 Hz |
4.9 dBmV |
40.2 dB |
3 |
0 |
| 12 |
Locked |
QAM256 |
12 |
525000000 Hz |
4.8 dBmV |
40.2 dB |
3 |
0 |
| 13 |
Locked |
QAM256 |
13 |
531000000 Hz |
4.7 dBmV |
39.9 dB |
4 |
0 |
| 14 |
Locked |
QAM256 |
14 |
537000000 Hz |
4.3 dBmV |
39.9 dB |
1 |
0 |
| 15 |
Locked |
QAM256 |
15 |
543000000 Hz |
4.3 dBmV |
40.0 dB |
3 |
0 |
| 16 |
Locked |
QAM256 |
16 |
549000000 Hz |
4.2 dBmV |
40.1 dB |
3 |
0 |
| 17 |
Locked |
QAM256 |
17 |
555000000 Hz |
3.5 dBmV |
40.0 dB |
2 |
0 |
| 18 |
Locked |
QAM256 |
18 |
561000000 Hz |
3.3 dBmV |
40.0 dB |
1 |
0 |
| 19 |
Locked |
QAM256 |
19 |
567000000 Hz |
2.8 dBmV |
39.9 dB |
2 |
0 |
| 20 |
Locked |
QAM256 |
20 |
573000000 Hz |
2.5 dBmV |
39.8 dB |
5 |
0 |
| 21 |
Locked |
QAM256 |
21 |
579000000 Hz |
2.5 dBmV |
39.8 dB |
2 |
0 |
| 22 |
Locked |
QAM256 |
22 |
585000000 Hz |
3.3 dBmV |
39.7 dB |
4 |
0 |
| 23 |
Locked |
QAM256 |
23 |
591000000 Hz |
3.5 dBmV |
39.9 dB |
7 |
0 |
| 24 |
Locked |
QAM256 |
38 |
429000000 Hz |
4.0 dBmV |
39.4 dB |
3 |
0 |
| 25 |
Locked |
QAM256 |
39 |
435000000 Hz |
4.1 dBmV |
39.4 dB |
0 |
0 |
| 26 |
Locked |
QAM256 |
40 |
441000000 Hz |
4.0 dBmV |
39.4 dB |
2 |
0 |
| 27 |
Locked |
QAM256 |
41 |
453000000 Hz |
4.3 dBmV |
39.6 dB |
4 |
0 |
| 28 |
Locked |
QAM256 |
42 |
405000000 Hz |
3.4 dBmV |
38.7 dB |
3 |
0 |
| 29 |
Locked |
QAM256 |
43 |
411000000 Hz |
3.8 dBmV |
38.9 dB |
1 |
0 |
| 30 |
Locked |
QAM256 |
44 |
417000000 Hz |
3.7 dBmV |
39.1 dB |
3 |
0 |
| 31 |
Locked |
QAM256 |
45 |
423000000 Hz |
4.0 dBmV |
39.2 dB |
4 |
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 |
3 |
5120 Ksym/sec |
22800000 Hz |
47.3 dBmV |
| 2 |
Locked |
ATDMA |
1 |
5120 Ksym/sec |
35600000 Hz |
47.0 dBmV |
| 3 |
Locked |
ATDMA |
2 |
5120 Ksym/sec |
29200000 Hz |
47.5 dBmV |
| 4 |
Locked |
ATDMA |
4 |
5120 Ksym/sec |
16400000 Hz |
47.0 dBmV |
| 5 |
Locked |
ATDMA |
9 |
2560 Ksym/sec |
40400000 Hz |
45.0 dBmV |
| 6 |
Not Locked |
Unknown |
0 |
0 |
0 |
0.0 dBmV |
| 7 |
Not Locked |
Unknown |
0 |
0 |
0 |
0.0 dBmV |
| 8 |
Not Locked |
Unknown |
0 |
0 |
0 |
0.0 dBmV |
|
|
|
| Downstream OFDM Channels |
| Channel |
Lock Status |
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 |
722000000 Hz |
7.58 dBmV |
40.4 dB |
1108 ~ 2987 |
3268253 |
3241194 |
0 |
| 2 |
Not Locked |
0 |
0 |
0 Hz |
0 dBmV |
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 |
|
No Responses!