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Orbi CBR750 drop connection wan side
Recently a few weeks now I noticed internet connection drops. I have Spectrum cable to Orbi CBR750 Modem/Router. Not sure if there was a firmware update but it is currently V4.6.14.4_2.3.12 I have t...
Please post a copy and paste of the modems connection status page.
https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-modem-modem-router
Any Criticals, Errors or Warnings seen in the event logs needs to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem.
Startup Procedure Procedure Status Comment Acquire Downstream Channel 261000000 Hz Locked Connectivity State Ok Operational Boot State Ok Operational Security Enabled BPI+ IP Provisioning Mode IPv6 Only ipv6Only(1) Downstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectable 1 Locked QAM 256 1 261000000 Hz 8.0 dBmV 38.6 dB 4 0 2 Locked QAM 256 2 267000000 Hz 8.0 dBmV 38.9 dB 0 0 3 Locked QAM 256 3 273000000 Hz 7.6 dBmV 38.9 dB 0 0 4 Locked QAM 256 4 279000000 Hz 7.3 dBmV 38.9 dB 0 0 5 Locked QAM 256 5 285000000 Hz 6.9 dBmV 38.9 dB 0 0 6 Locked QAM 256 6 291000000 Hz 7.0 dBmV 38.6 dB 0 0 7 Locked QAM 256 7 297000000 Hz 6.9 dBmV 38.9 dB 0 0 8 Locked QAM 256 8 303000000 Hz 6.8 dBmV 38.6 dB 0 0 9 Locked QAM 256 9 309000000 Hz 6.6 dBmV 38.9 dB 0 0 10 Locked QAM 256 10 315000000 Hz 6.5 dBmV 38.6 dB 0 0 11 Locked QAM 256 11 321000000 Hz 6.4 dBmV 38.6 dB 0 0 12 Locked QAM 256 12 327000000 Hz 6.3 dBmV 38.9 dB 0 0 13 Locked QAM 256 13 333000000 Hz 6.1 dBmV 38.9 dB 0 0 14 Locked QAM 256 14 339000000 Hz 6.0 dBmV 38.9 dB 0 0 15 Locked QAM 256 15 345000000 Hz 5.6 dBmV 38.9 dB 0 0 16 Locked QAM 256 16 351000000 Hz 5.5 dBmV 38.9 dB 0 0 17 Locked QAM 256 17 357000000 Hz 5.5 dBmV 38.9 dB 0 0 18 Locked QAM 256 18 363000000 Hz 5.4 dBmV 38.6 dB 0 0 19 Locked QAM 256 19 369000000 Hz 5.1 dBmV 38.9 dB 0 0 20 Locked QAM 256 20 375000000 Hz 4.9 dBmV 38.6 dB 0 0 21 Locked QAM 256 21 381000000 Hz 4.8 dBmV 38.6 dB 0 0 22 Locked QAM 256 22 387000000 Hz 5.0 dBmV 38.6 dB 0 0 23 Locked QAM 256 23 393000000 Hz 4.9 dBmV 38.6 dB 0 0 24 Locked QAM 256 24 399000000 Hz 4.8 dBmV 38.9 dB 0 0 25 Locked QAM 256 26 405000000 Hz 4.6 dBmV 38.6 dB 0 0 26 Locked QAM 256 27 411000000 Hz 4.8 dBmV 38.6 dB 0 0 27 Locked QAM 256 28 417000000 Hz 4.8 dBmV 38.6 dB 0 0 28 Locked QAM 256 29 423000000 Hz 4.6 dBmV 38.6 dB 0 0 29 Locked QAM 256 30 453000000 Hz 4.1 dBmV 38.6 dB 0 0 30 Locked QAM 256 31 459000000 Hz 3.9 dBmV 38.6 dB 0 0 31 Locked QAM 256 32 465000000 Hz 4.0 dBmV 38.6 dB 0 0 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 6 5120 Ksym/sec 24200000 Hz 41.5 dBmV 2 Locked ATDMA 7 5120 Ksym/sec 30600000 Hz 42.0 dBmV 3 Locked ATDMA 8 5120 Ksym/sec 37000000 Hz 42.0 dBmV 4 Not Locked N/A Unknown 0 Ksym/sec 0 Hz 0.0 dBmV 5 Not Locked N/A Unknown 0 Ksym/sec 0 Hz 0.0 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 2 25 624000000 Hz 4.9 dBmV 39.1 dB 388~3707 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 Locked 0 5 6025000 Hz 39.2 dBmV 2 Not Locked 0 0 0 Hz 0.0 dBmV Current System Time: Sun Nov 17 14:14:43 2024 System Up Time 09:58:50 Channels 1 thru 4 are too high in power:
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
I'd find you a -3dbm cable coax attenuator to put between the CBR and coax cable line.
Any Criticals, Errors or Warnings seen in the event logs needs to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem.
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.
Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.
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://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
https://highspeed.tips/docsis-eventsI have a 6db Attenuator between the coax and modem/router now.
Line was new from pole to modem maybe 6 years ago by Spectrum.
No kinks nothing else on the line just straight to the modem.
It ran fine all these years but maybe the last 3-4 weeks it seems it will loose internet until I pull the power to the modem and plug it back in
Ron