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Static Routing an Actiontec GT701D modem to Asus RT-AC66U

  • LAN
  • Actiontec
  • Routers
  • Internet Service Providers
  • Asus
  • Wireless Network
  • Modem
Last response: in Wireless Networking
October 6, 2013 5:53:03 PM

Hi all,

I've spent an entire day trying to follow the steps laid out in the following thread for chaining two networks together in PPPoE configuration: link

I'm trying to put the modem in "dumb" mode to bypass the double NAT issue between my modem and router so that I can use my router to manage port forwarding for remote access to devices on the LAN (PCs, printers, NAS, & security cameras).

The RT-AC66U is assigned from the modem, but is referenced as on the office LAN.
My modem's LAN IP address is and subnet mask is My modem's ISP-provided IP is dynamic.

I tried turning the modem's DMZ on, NAT off, DHCP off, AND adding a Static Routing rule of: Subnet IP:
Subnet Mask:
Gateway IP:

Then, I changed the WAN type of the Asus router to PPPoE, manually added as the Primary and Secondary DNS server addresses, and entered in my ISP username and password. Unfortunately, it didn't work, I had no internet access, and when I tried to navigate to the modem's configuration menu I was getting routed to back to an error message (about no connectivity) on the router's configuration menu. So maybe I got close? I took me quite a while to reverse my changes via a mobile hotspot.

If anyone is willing to point me in the right direction, I would be forever grateful.

Thank you,

Additionally, I've been trying to work off of the linked resources below:

More about : static routing actiontec gt701d modem asus ac66u

a c 294 X LAN
a b Ĉ ASUS
October 21, 2013 11:39:52 AM

Take a step back and try something simple.

Insure that your Actiontec is making an Internet connection by attaching a computer. Then disconnect the computer and then connect an Ethernet cable from the Actiontec to the WAN port of the AC66U, make the Actiontec address ( the WAN address in the AC66 and use a different subnet for the AC66 LAN (like If you need to use any static addresses in your LAN leave a few available (say - .10) and set the AC66 DHCP range from Have all of your devices automatically obtain an IP address and they will get it from the AC66.

Don't connect anything but the AC66 to your Actiontec.