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Forum Discussion
Daesania
Mar 03, 2023Star
Orbi CBR750 random outages
Not consistent but at random times I'm losing internet connection. The connection does NOT drop on the modem/router though, it still shows the status up. ISP has come out multiple times (4th was today). These "blips" as I'm calling them were happening every 5 minutes, almost exactly. They came out, changed the hardware on the line, left. Still happening. Came back again, said they see errors on the line from the street level connection and schedule an appointment with the street level tech.
Street level tech says they monitored connection for an hour and see no issues, recommended a replacement line from house box ISP connection to inside of house. They do that today and yet the issue persists.. just differently. Instead of every 5 minutes for only 5 seconds, its once an hour for 2-3 minutes.
Of the repeated errors on the event log, these seem to happen the most:
Mar 03 2023 14:56:15Warning (5)DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value
Mar 03 2023 14:56:15Warning (5)RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW
Mar 03 2023 14:56:15Notice (6)US profile assignment change. US Chan ID: 6
24 Replies
Does the front LED turn PINK or any of the modem UP or Down LEDs give an AMBER light?
What Firmware version is currently loaded?
Please post a copy and paste of the modems connection status and event log page.
https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-modem-modem-router
https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-modem-routerHave 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://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.htmlA lot of this info was already in my post but i'll post it again.. No there is no color on the orbi. Status lights show up.
The firmware is current, there are no updates available.
Techs have checked the line and it says fine both inside and at the street level box.
Yes there is a splitter, the line splits between my cable box and my modem router.The line and the splitter are brand new as of today.
The modem has been powered on/off many many times and cycled many many times.
I cannot paste the log currently. It does this sometimes where the log appears blank and will show up later. The errors in my original post are the same errors that show up around the downtime.Startup Procedure Procedure Status Comment Acquire Downstream Channel 951000000 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 1 783000000 Hz -3.7 dBmV 37.3 dB 1 0 2 Locked QAM 256 2 789000000 Hz -3.5 dBmV 37.3 dB 1 0 3 Locked QAM 256 3 795000000 Hz -3.7 dBmV 37.6 dB 1 0 4 Locked QAM 256 4 801000000 Hz -3.7 dBmV 37.6 dB 22 0 5 Locked QAM 256 5 807000000 Hz -3.7 dBmV 37.3 dB 8 0 6 Locked QAM 256 6 813000000 Hz -4.0 dBmV 37.6 dB 2 0 7 Locked QAM 256 7 819000000 Hz -4.0 dBmV 37.3 dB 1 0 8 Locked QAM 256 8 825000000 Hz -4.2 dBmV 37.6 dB 1 0 9 Locked QAM 256 9 831000000 Hz -3.9 dBmV 37.6 dB 1 0 10 Locked QAM 256 10 837000000 Hz -3.7 dBmV 37.6 dB 6 0 11 Locked QAM 256 11 843000000 Hz -4.2 dBmV 37.6 dB 14 0 12 Locked QAM 256 12 849000000 Hz -4.2 dBmV 37.3 dB 1 0 13 Locked QAM 256 13 855000000 Hz -4.5 dBmV 37.6 dB 1 0 14 Locked QAM 256 14 861000000 Hz -4.5 dBmV 37.3 dB 0 0 15 Locked QAM 256 15 867000000 Hz -4.9 dBmV 37.3 dB 0 0 16 Locked QAM 256 16 873000000 Hz -5.0 dBmV 36.3 dB 0 0 17 Locked QAM 256 17 879000000 Hz -5.2 dBmV 37.3 dB 0 0 18 Locked QAM 256 18 885000000 Hz -5.5 dBmV 36.6 dB 0 0 19 Locked QAM 256 19 891000000 Hz -5.9 dBmV 36.6 dB 0 0 20 Locked QAM 256 20 897000000 Hz -5.9 dBmV 36.6 dB 1 0 21 Locked QAM 256 21 903000000 Hz -5.5 dBmV 36.3 dB 0 0 22 Locked QAM 256 22 909000000 Hz -5.2 dBmV 36.6 dB 1 0 23 Locked QAM 256 23 915000000 Hz -5.0 dBmV 36.6 dB 0 0 24 Locked QAM 256 24 921000000 Hz -4.7 dBmV 37.3 dB 0 0 25 Locked QAM 256 25 927000000 Hz -4.5 dBmV 36.6 dB 0 0 26 Locked QAM 256 26 933000000 Hz -4.5 dBmV 37.0 dB 0 0 27 Locked QAM 256 27 939000000 Hz -4.0 dBmV 36.6 dB 0 0 28 Locked QAM 256 28 945000000 Hz -3.9 dBmV 36.6 dB 0 0 29 Locked QAM 256 29 951000000 Hz -3.0 dBmV 36.6 dB 5 0 30 Locked QAM 256 30 957000000 Hz -2.5 dBmV 37.3 dB 22 0 31 Locked QAM 256 31 963000000 Hz -4.5 dBmV 35.7 dB 1 0 32 Locked QAM 256 32 969000000 Hz -9.5 dBmV 34.4 dB 42 0 Upstream Bonded Channels Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power 1 Locked ATDMA 1 2560 Ksym/sec 12600000 Hz 40.3 dBmV 2 Locked ATDMA 2 2560 Ksym/sec 15900000 Hz 40.8 dBmV 3 Locked ATDMA 3 5120 Ksym/sec 20700000 Hz 41.0 dBmV 4 Locked ATDMA 4 5120 Ksym/sec 27100000 Hz 41.8 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 3 159 300000000 Hz -1.0 dBmV 43.8 dB 2216~5975 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 6 27200000 Hz 25.8 dBmV 2 Not Locked 0 0 0 Hz 0.0 dBmV Please copy and paste the event log into a word doc then save off as a PDF then use the Choose File button on your next post to attach it.
Who is your ISP?
I see power levels are all over the place and mostly on the low side thought with in spec, channel 32 is -9db and is just too low:
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
I recommend removing the splitter temporarily to see if the power comes up and the Correctables and Un-Correctables can get to all zeros.