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CBR750 Constantly disconnecting
Can you update how your system has been operating since your factory reset a month ago? I am having similar issues with my system dropping and just trying to troubleshoot which COA I need to consider. THanks!
36 Replies
Do you have the CBR750 or the RBR750 with a RBS750? The CBR and RBR are two different systems and different FW.
bcfleischmann wrote:
Can you update how your system has been operating since your factory reset a month ago? I am having similar issues with my system dropping and just trying to troubleshoot which COA I need to consider. THanks!
I have the CBR750 with satellites. I am just going through and reading what others have done that might be able to support my constant dropping issue.
What Firmware version is currently loaded?
Be sure that your using FW for any RBS connected with the CBR from the CBK752s web page:
https://www.netgear.com/support/product/cbk752.aspx
Using RBS FW from the RBK systems is NOT compatible with the RBS that comes with the CBR kits.
Is the CBR disconnecting or is the RBS disconnecting?
What is the size of your home? Sq Ft?
What is the distance between the router and 📡 satellite(s)? 30 feet or more is recommended in between RBR and RBS📡 to begin with depending upon building materials when wirelessly connected.
https://kb.netgear.com/31029/Where-should-I-place-my-Orbi-satellite 📡For CBR issues:
What channels are you using? Auto? Try Auto and 48 on 5Ghz. Or try setting manual channel 1, 6 or 11 on 2.4Ghz and 40 to 48 channel on 5Ghz.
Any Wifi Neighbors near by? If so, how many?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. CBR V4.6.5.8_2.0.54 RBS 4.6.5.14
1650 sqft house. I disconnected one satellite because of reading about 30 ft. CBR is downstairs, RBS is upstairs. I assume it is the CBR disconnecting constantly because nothing works on wifi when disconnects happen until I reboot.
These changes I made two days ago.I changed settings to channel 1 for 2.4G and my 5G was already at channel 48. I set short preamble, unchecked the 20/40MHz coexistence, and set power thresholds to 50% for both 2.4 and 5G. I have previously disconnected for 1 minute on multiple occasions, and once since I made the above changes.
Aug 23 2022 15:14:39 Critical (3) SYNC Timing Synchronization failure - Loss of Sync Aug 23 2022 15:14:50 Notice (6) CM-STATUS message sent. Event Type Code: 2 Aug 23 2022 15:15:14 Critical (3) SYNC Timing Synchronization failure - Loss of Sync Aug 23 2022 15:15:24 Notice (6) CM-STATUS message sent. Event Type Code: 5 Aug 23 2022 15:17:36 Critical (3) SYNC Timing Synchronization failure - Loss of Sync Aug 23 2022 15:17:44 Notice (6) CM-STATUS message sent. Event Type Code: 5 Aug 23 2022 15:18:54 Critical (3) SYNC Timing Synchronization failure - Loss of Sync Aug 23 2022 15:19:04 Notice (6) CM-STATUS message sent. Event Type Code: 5 Aug 23 2022 15:19:25 Critical (3) SYNC Timing Synchronization failure - Loss of Sync Aug 23 2022 15:19:31 Notice (6) CM-STATUS message sent. Event Type Code: 5 Aug 23 2022 15:19:50 Critical (3) SYNC Timing Synchronization failure - Loss of Sync Aug 23 2022 15:19:51 Notice (6) CM-STATUS message sent. Event Type Code: 2 Aug 23 2022 15:19:52 Critical (3) SYNC Timing Synchronization failure - Loss of Sync Aug 23 2022 15:20:03 Notice (6) CM-STATUS message sent. Event Type Code: 5 Aug 23 2022 15:20:10 Critical (3) SYNC Timing Synchronization failure - Loss of Sync Aug 23 2022 15:20:10 Notice (6) CM-STATUS message sent. Event Type Code: 5 Aug 23 2022 15:21:48 Critical (3) SYNC Timing Synchronization failure - Loss of Sync Aug 23 2022 15:21:56 Notice (6) CM-STATUS message sent. Event Type Code: 5 Aug 23 2022 15:22:44 Critical (3) SYNC Timing Synchronization failure - Loss of Sync Aug 23 2022 15:22:44 Notice (6) CM-STATUS message sent. Event Type Code: 5 Aug 23 2022 15:31:22 Critical (3) SYNC Timing Synchronization failure - Loss of Sync Aug 23 2022 15:31:28 Notice (6) CM-STATUS message sent. Event Type Code: 5 Aug 23 2022 15:32:23 Critical (3) SYNC Timing Synchronization failure - Loss of Sync Aug 23 2022 15:32:33 Notice (6) CM-STATUS message sent. Event Type Code: 5 Aug 23 2022 15:43:17 Critical (3) SYNC Timing Synchronization failure - Loss of Sync Aug 23 2022 15:43:22 Notice (6) CM-STATUS message sent. Event Type Code: 5 Aug 23 2022 16:10:53 Warning (5) MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1 Aug 23 2022 16:10:53 Notice (6) TLV-11 - unrecognized OID Aug 23 2022 16:10:53 Critical (3) Config File Rejected due to Invalid or Unexpected TLV 11 Aug 23 2022 16:10:57 Warning (5) REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value Aug 23 2022 16:10:57 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW Aug 23 2022 16:10:57 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW Aug 23 2022 16:11:07 Alert (2) CM Certificate Error Aug 23 2022 16:11:11 Notice (6) CM-STATUS message sent. Event Type Code: 3 Aug 23 2022 16:23:08 Warning (5) DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value Please post a copy and paste of the modems connection status page.
I see lots of criticals that the ISP needs to resolve.
Does the CBR show any front LED at the bottom or the 4 LEDs near the top of any odd behaviors here when this happens?
