Friday, January 10, 2020

Netgear R7800 with Arris TM1602 Modem Question

I wanted to see if anyone could offer some good advice regarding an issue I'm having with modem and router mentioned in title.

Problem: If the router is ever reboot (manually or accidentally from power outage/settings change/etc), it will not reconnect with the Arris modem. The R7800 continues to work perfectly fine locally, but won't gain internet access UNLESS the modem is power cycled. Once modem is power cycled, it resolves the issue.

This issue has persisted throughout my years of ownership with R7800 regardless of firmware version (Currently V1.0.2.68).

On the router log, all I see is this (when I power cycle modem):

[Internet connected] IP address: 24.162.***.***, Friday, January 10, 2020 22:20:50

[Internet connected] IP address: 192.168.100.20, Friday, January 10, 2020 22:20:04

[Internet connected] IP address: 192.168.100.20, Friday, January 10, 2020 22:19:54

[Internet connected] IP address: 192.168.100.20, Friday, January 10, 2020 22:19:43

I've done all the normal stuff (factory reset, changing cables, etc). The only thing I haven't done is test a different modem. However, I don't think changing modems would be necessary as I recently tested DD-WRT V3 Beta (Build 40559) on my R7800 and while on DD-WRT this problem went away. While on DD-WRT firmware I can make changes to the router and reboot it a thousand times and it will reconnect to the internet every time without having to power cycle the modem.

It's got me wondering if there is some kind of option within the stock Netgear firmware that's causing this since the it performs exactly as it should on DD-WRT.

Any and all help is greatly appreciated.



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