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Forum Discussion
pszabo
Nov 18, 2022Aspirant
NETGEAR Nighthawk(R) X4S R7800 - Can not properly reconnect to ISP's cable-modem
Hi All! I've problem with my NETGEAR Nighthawk(R) X4S R7800 router. My router can not reconnect properly to the internet after my ISP's Cable Modem is restartting. Every time after modem resta...
FURRYe38
Nov 18, 2022Guru - Experienced User
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. CAT6 is recommended.
Has a power off for 1 minute then back ON with the ISP modem and router been performed since last update?
Be sure to restart your network in this sequence:
Turn off and unplug modem.
Turn off router and computers.
Plug in and turn on modem. Wait 2 minutes for it to connect.
Turn on the router and wait 2 minutes for it to connect.
Turn on computers and rest of network.
Has a factory reset and setup from scratch been performed since last FW update?
A complete pull of the power adapters for a period of time after the factory reset then walk thru the setup wizard and setup from scratch.
pszabo
Nov 21, 2022Aspirant
Hi FURRYe38,
Thanx for your reply. Here I'm answering for your questions inline.
"What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too?"
There is no any other label on the outside just as I wrote previously: "vodafone TG3442DE"
As I know it's a "Arris Touchstone TG3442DE" modem
"Be sure your using a good quality LAN cable between the modem and router. CAT6 is recommended. "
I'm using Cat5e cables since years without problem.
"Has a power off for 1 minute then back ON with the ISP modem and router been performed since last update?"
Yes, no help.
"Be sure to restart your network in this sequence:
Turn off and unplug modem.
Turn off router and computers.
Plug in and turn on modem. Wait 2 minutes for it to connect.
Turn on the router and wait 2 minutes for it to connect.
Turn on computers and rest of network."
I did it several times.
"Has a factory reset and setup from scratch been performed since last FW update? "
Yes
"A complete pull of the power adapters for a period of time after the factory reset then walk thru the setup wizard and setup from scratch."
I've done it already, no help.
You've to know, I'm an IT engineer (SW developer) and I'm over of all the basic things. I've used the R7800 via my ISP's older modem (a Compal modem for 500mbits), and I did not experience any issue. If the modem has been restarted sometime, I do not even realize it.
But now, with this vodafone / Arris modem which I got for the 1000mbits subscription I've got this issue.
Due to some ISP side problem the modem restarted itself very often (1-2-3 times / day) and every time I had to use the Release than Renew feature to get proper internet connection. Of course if I reboot the R7800 that also solved the problem.
Even after couple hours later the router does not properly reconnect -by itself-. (only manual relese/renew or reboot helps)
The strange thing is that my old WNDR 3400 (with dd-wrt) does not produce such problem, that is simply reconnecting after the modem restarts. (no need to release/renew or reboot)