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SoCalLV's avatar
SoCalLV
Aspirant
Dec 28, 2025

CM1000 w/ R7000P

Hi    I’ve had my modem and router for a couple of years. Everything was working fine till couple months ago my internet has been buggy.  I noticed the modem upstream light will blink green then st...
CM1000
FURRYe38's avatar
FURRYe38
Guru - Experienced User
Jan 06, 2026

Can we get the Event Logs page data as well. 

 

Power for some of our channels is too much and too high. 

https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router

 

I'd day get a -3 or -6dbm cable coax line attenuator installed. 

 

SoCalLV wrote:

11 Locked QAM256 11 795000000 Hz 8.9 dBmV 42.7 dB 86892372 0 0
12 Locked QAM256 12 801000000 Hz 9.0 dBmV 42.7 dB 86899213 0 0
13 Locked QAM256 13 807000000 Hz 9.1 dBmV 42.7 dB 86906720 0 0
14 Locked QAM256 14 813000000 Hz 9.2 dBmV 42.7 dB 86914866 0 0
15 Locked QAM256 15 819000000 Hz 9.1 dBmV 42.8 dB 86922259 0 0
16 Locked QAM256 16 825000000 Hz 9.1 dBmV 42.8 dB 86929503 0 0
17 Locked QAM256 17 831000000 Hz 9.1 dBmV 42.7 dB 86937175 0 0
18 Locked QAM256 18 837000000 Hz 9.1 dBmV 42.7 dB 86944389 0 0
19 Locked QAM256 19 843000000 Hz 9.4 dBmV 42.9 dB 86952100 0 0

 

SoCalLV's avatar
SoCalLV
Aspirant
Jan 06, 2026
2026-01-06, 21:13:22Critical (3)SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=c8:9e:43:72:2f:60;CMTS-MAC=04:76:b0:24:4c:ef;CM-QOS=1.1;CM-VER=3.1;
2026-01-06, 21:12:34Notice (6)US profile assignment change. US Chan ID: 6; Previous Profile: 13; New Profile: 9 13.;CM-MAC=c8:9e:43:72:2f:60;CMTS-MAC=04:76:b0:24:4c:ef;CM-QOS=1.1;CM-VER=3.1;
2026-01-06, 21:11:41Critical (3)No Ranging Response received - T3 time-out;CM-MAC=c8:9e:43:72:2f:60;CMTS-MAC=04:76:b0:24:4c:ef;CM-QOS=1.1;CM-VER=3.1;
2026-01-06, 21:11:39Warning (5)Dynamic Range Window violation
2026-01-06, 21:11:39Warning (5)RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=c8:9e:43:72:2f:60;CMTS-MAC=04:76:b0:24:4c:ef;CM-QOS=1.1;CM-VER=3.1;
2026-01-06, 21:11:39Warning (5)Dynamic Range Window violation
2026-01-06, 21:11:39Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=c8:9e:43:72:2f:60;CMTS-MAC=04:76:b0:24:4c:ef;CM-QOS=1.1;CM-VER=3.1;
2026-01-06, 21:11:38Critical (3)No Ranging Response received - T3 time-out;CM-MAC=c8:9e:43:72:2f:60;CMTS-MAC=04:76:b0:24:4c:ef;CM-QOS=1.1;CM-VER=3.1;
  • SoCalLV's avatar
    SoCalLV
    Aspirant
    Jan 06, 2026
    2026-01-06, 21:11:32Notice (6)DS profile assignment change. DS Chan ID: 33; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=c8:9e:43:72:2f:60;CMTS-MAC=04:76:b0:24:4c:ef;CM-QOS=1.1;CM-VER=3.1;
    2026-01-06, 21:11:30Notice (6)DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=c8:9e:43:72:2f:60;CMTS-MAC=04:76:b0:24:4c:ef;CM-QOS=1.1;CM-VER=3.1;
    2026-01-06, 21:11:25Notice (6)TLV-11 - unrecognized OID;CM-MAC=c8:9e:43:72:2f:60;CMTS-MAC=04:76:b0:24:4c:ef;CM-QOS=1.1;CM-VER=3.1;
    Time Not EstablishedWarning (5)DHCP WARNING - Non-critical field invalid in response ;CM-MAC=c8:9e:43:72:2f:60;CMTS-MAC=04:76:b0:24:4c:ef;CM-QOS=1.1;CM-VER=3.1;
    Time Not EstablishedNotice (6)Honoring MDD; IP provisioning mode = IPv4
    Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=c8:9e:43:72:2f:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
    2026-01-06, 21:07:13Critical (3)No Ranging Response received - T3 time-out;CM-MAC=c8:9e:43:72:2f:60;CMTS-MAC=04:76:b0:24:4c:ef;CM-QOS=1.1;CM-VER=3.1;