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Forum Discussion
CBR750 random disconnects
I have just the one CBR750 modem/router - no additional satellites, etc. Nearly every day at random times, I'll get disconnected and have to reboot the device. I've tried reflashing the firmware ...
What FW is loaded on the CBR?
I see some Config File Rejected due to Invalid or Unexpected TLV 11 entries that the ISP needs to look in to.
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 then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router?article=24311
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
Firmware is V4.6.5.8_2.0.54
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 honorMdd(4) Downstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectable 1 Locked QAM 256 2 489000000 Hz -11.5 dBmV 36.6 dB 3 0 2 Locked QAM 256 3 495000000 Hz -11.7 dBmV 36.3 dB 2 0 3 Locked QAM 256 4 501000000 Hz -11.4 dBmV 36.3 dB 0 0 4 Locked QAM 256 5 507000000 Hz -11.7 dBmV 36.3 dB 2 0 5 Locked QAM 256 6 513000000 Hz -11.5 dBmV 35.5 dB 0 0 6 Locked QAM 256 7 519000000 Hz -11.9 dBmV 36.3 dB 0 0 7 Locked QAM 256 8 525000000 Hz -12.2 dBmV 35.5 dB 0 0 8 Locked QAM 256 9 531000000 Hz -12.2 dBmV 35.0 dB 0 0 9 Locked QAM 256 10 537000000 Hz -12.5 dBmV 34.9 dB 0 0 10 Locked QAM 256 11 543000000 Hz -12.5 dBmV 35.5 dB 0 0 11 Locked QAM 256 12 549000000 Hz -13.2 dBmV 34.7 dB 0 0 12 Locked QAM 256 13 555000000 Hz -13.0 dBmV 35.5 dB 0 0 13 Locked QAM 256 14 561000000 Hz -13.3 dBmV 35.0 dB 0 0 14 Locked QAM 256 15 567000000 Hz -12.7 dBmV 35.7 dB 0 0 15 Locked QAM 256 16 573000000 Hz -13.3 dBmV 34.0 dB 0 0 16 Locked QAM 256 17 579000000 Hz -13.5 dBmV 34.3 dB 0 0 17 Locked QAM 256 18 585000000 Hz -13.5 dBmV 35.0 dB 0 0 18 Locked QAM 256 19 591000000 Hz -13.7 dBmV 33.8 dB 0 0 19 Locked QAM 256 20 597000000 Hz -13.7 dBmV 34.3 dB 0 0 20 Locked QAM 256 21 603000000 Hz -14.3 dBmV 34.9 dB 7 0 21 Locked QAM 256 22 609000000 Hz -14.3 dBmV 34.4 dB 0 0 22 Locked QAM 256 23 615000000 Hz -14.8 dBmV 34.4 dB 11 0 23 Locked QAM 256 24 621000000 Hz -14.0 dBmV 34.3 dB 7 0 24 Locked QAM 256 25 627000000 Hz -14.0 dBmV 33.9 dB 2 0 25 Locked QAM 256 26 633000000 Hz -14.0 dBmV 34.4 dB 1 0 26 Locked QAM 256 27 639000000 Hz -14.4 dBmV 34.3 dB 0 0 27 Locked QAM 256 28 645000000 Hz -15.7 dBmV 33.4 dB 0 0 28 Locked QAM 256 29 651000000 Hz -15.8 dBmV 33.3 dB 0 0 29 Locked QAM 256 30 657000000 Hz -16.0 dBmV 33.0 dB 0 0 30 Locked QAM 256 31 663000000 Hz -16.4 dBmV 32.9 dB 2 0 31 Locked QAM 256 32 669000000 Hz -16.0 dBmV 32.9 dB 11441 36263 32 Not Locked N/A N/A 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 4 5120 Ksym/sec 16400000 Hz 45.0 dBmV 2 Locked ATDMA 3 5120 Ksym/sec 22800000 Hz 46.0 dBmV 3 Locked ATDMA 2 5120 Ksym/sec 29200000 Hz 46.5 dBmV 4 Locked ATDMA 1 5120 Ksym/sec 35600000 Hz 46.3 dBmV 5 Locked ATDMA 5 2560 Ksym/sec 40400000 Hz 47.0 dBmV 6 Not Locked N/A Unknown 0 Ksym/sec 0 Hz 0.0 dBmV 7 Not Locked N/A Unknown 0 Ksym/sec 0 Hz 0.0 dBmV 8 Not Locked N/A Unknown 0 Ksym/sec 0 Hz 0.0 dBmV Downstream OFDM Channels Channel Lock Status Modulation/Profile ID Channel ID Frequency Power SNR/MER Active Subcarrier
Number RangeUnerrored
CodewordsCorrectable
CodewordsUncorrectable
Codewords1 Locked 3 37 690000000 Hz -15.5 dBmV 32.5 dB 1108~2987 0 0 0 2 Not Locked 0 0 0 Hz 0.0 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 0.0 dBmV 2 Not Locked 0 0 0 Hz 0.0 dBmV