Orbi AXE11000 disconnects from ISP and wont reconnect without power cycle of ISP modem

Does the front LED turn RED or PINK when this happens on the RBR? If so, this means the ONT or ISP serivces is being dropped and the RBR can't re-gain access or services until the ONT is rebooted. 

ISP needs to make sure the signal up to the ONT is good and working well. They can check it from there side to see if anything is being logged when this happens. 

 

What Firmware version is currently loaded?
What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too?
Be sure your using a good quality LAN cable between the modem and router. CAT6A STP is recommended. 
How many RBS are deployed? 
What is the size of your home? Sq Ft?

---

airwolf11597 wrote:

SO having an issue where the Orbi Router is disconnecting (roughly once a day overnight) and cannot re-establish a connection to the ISP ONT Modem without me having to power cycle the ISP ONT. Yet I can directly connect a laptop to the ONT and establish connection.

---

A regular "once a day" anomaly might be a clue, but might be a very difficult situation to diagnose .  As a hypothesis, it is very common for networks to assign IP addresses to customers using the DHCP mechanism (the same mechanism used by Netgear routers to assign IPs to devices on the internal LAN).  It is also common to define the "lease period" as one day. (actually 86,400 seconds).  https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol 

The DHCP mechanism calls for devices to attempt to renew the lease when half of the time has expired and then continue to request renewal until the lease actually expires.  At which point, the device is supposed to stop using the network.  See "Reliability" in the Wikipedia article.

 

There are several ways to attempt to validate such a hypothesis:

• Look in the Orbi log file to see if the router logs "network established" when the ONT is rebooted.  Be careful not to reboot the Orbi router, because the log file is erased when the router restarts.
• In the Orbi web interface, on the Advanced Tab home page, open the Blue Box "Connection Status" to see how long the lease was for and when it will expire.  If internet access is lost when the DHCP lease is due to expire, that might be an indication that there is an issue with the ISP's DHCP mechamism.
• Being a total nerd, what I did was use a smart Ethernet switch to tap the Ethernet connection between Orbi router and my Spectrum modem.  (similar to the ONT except for cable systems rather than fiber).  Using Wireshark to monitor the tap for DHCP traffic, I recorded over a week of interactions and verified that Spectrum:
  • Assigns IPv4 lease for one day (86,400 seconds)
  • Responds to IPv4 DHCP renewal at 12 hours and issues the same lease for another 24 hours.  Thus, there are two DHCP renewals every day.
  • Assigns an IPv6 lease for one week and responds to a renewal request in 3.5 days.

It might be easiest to start with the log file and Connection Status information and see if they support (or refute) a hypothesis that there is an issue with the DHCP renewal.  Perhaps it is a problem on the ISP side - or perhaps it is a problem with the Orbi router.  Or.... maybe the service interruption is not tied to the DHCP process at all.