RBR50 Router disconexting

[John_Ba]

I have a Orbi RBR50 on v2.7.5.4 firmware. The setup which has been working well for some years. But the router has tripped/stopped working twice in the last month. Its stopped working both times about 4am and is showing Magenta. My ISP says the connection went down my end and the Orbi has reconnected in the past if the internet went down. The first time I was on a copper connection and just rebooting didn’t work I had to turn it off for 5 minutes then it worked OK again. Since then I have moved to a fibre connection and today just a reboot got it working OK.

Any ideas as to what may be the problem would be very welcome

[michaelkenward]

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@John_Ba wrote:

I have a Orbi RBR50 on v2.7.5.4 firmware.

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And the modem/gateway/ONT between this and the Internet is?

[John_Ba]

Hi with the copper internet it was a Vigor 130 with the current fiber just the installed wall box

[plemans]

the vigor 130 is a modem/router combo device and causes a double nat. 

do you have it (the vigor) in passthrough mode? Or the netgears IP address in its DMZ?

[John_Ba]

My one was just a modem and is not in use now anyway as now using fibre