This is so simple…
The connections go like this…
ISP service to ISP Router from ISP Router one of the outputs goes to the WAN input of the Netgear router and then you can connect anything IP based to the outputs of the Netgear router.
Leave the ISP router alone… do not to change any thing on there setup except confirm that they or you have assigned a STATIC IP with DMZ privileges… i.e. 192.168.2.10
Now connect and log in to your Netgear router... find the WAN configuration page and assigned it as 'STATIC' putting in the 'STATIC IP' with DMZ privileges… i.e. 192.168.2.10
also put in the SUBNET & Gateway INFO from there ISP router…
Static IP… 192.168.2.10
Now on the Netgear router assign it a new IP range configuration…
NEW Netgear settings…
Router IP is now… 192.168.100.1
Subnet of… 255.255.255.0
Gateway of … 192.168.100.1
Assign the DNS to… I use OPENDNS
There DNS servers are… 220.127.116.11 & 18.104.22.168
DO NOT FORGET TO SAVE YOUR SETTINGS… ALSO THIS WILL NOT CHANGE WHEN YOU HAVE TO REBOOT THE ROUTER IF NEEDED
This clears them of handling routing queries and allows you to setup a OPENDNS account so that you can manage your traffic for your home/business etc…
This setup gives you a pretty tight or lose control of webpage viewing restrictions or allowances. Plus there DNS server queeries are known to be faster and better than what a ISP provider can provide.
Also do not forget to allow the Netgear router to assign/give out IP address.
Choose the start IP like 192.168.100.101 and how many you would like the DHCP server to give maybe 20,50,30 whatever your hearts desire.
When it comes to the renewal time of the DHCP server the best I have come across for home use is 1 or 2 days.
Now if this was for a cafe or something like it I would have renewing IP address every 30 minutes for the increase usage of IP available to give in that type of environment.
But, for home 1 or 2 days is okay. The less the router has to manage the less likely of crashes or memory constraints.
Now when doing all these configuring going on you will learn about… IP /release and IP /renew to get new IP assignments for your computer, when changing connections to the ISP router and Netgear router . Look up what the IP commands do… GOOGLE is your friend on that.
The above setup allows you to manage both router environments from the output side of the Netgear router.
You will be able log on to both router log in pages, i.e 192.168.2.1 ISP router & 192.168.100.1 Netgear router
I think now you will get a better handle or view on what's going on… ;^)
To anybody else with better info or if I forgot anything here, please add addition instructions… thanks!