N56U as a modem

[thomaspleasance]

Is it possible to make the N56U into a pppoe modem?

Basically i want to use the n56u as a modem and use my n66u as a gateway

ISP --PPPoE--> N56U(PPPoE client) --> N66U

 

[wouterv]

The RT-N56U device of Asus is a so called router, not a modem.
The router can optional be configured to work as an access point only.

The modem (Modulator-Demodulator) is connected to the incoming line of your ISP, either a DSL line (telephone line) or TV antenna cable. The modem picks the "hidden" Internet signal from the telepnone line of antenna cable and turns it into a standard TCP/IP network signal. Modems are often provided by the ISP.
The network signal out of the modem can be brought directly to a single computer to give it Internet access.

Todays households do have more than one computer or device that require internet, to distribute the single Internet connection out of the modem to multiple devices, you use a router. The router has a buildin network switch with multiple network ports to connect multiple devices.
Most routers these days also provide wireless access, and have a buildin wireless access point. So, with most routers like the RT-N56U you can use wired devices and wireless devices.

To extend the wireless coverage, you can hookup another wireless access point to the router. Most routers like the RT-N56U can also be configured to be an access point only.

You also mention gateway, a gateway is a device to connect one type of network to another type, with different protocols. In normal households that is not applicable.

Reading your question I believe that you want to setup the RT-N56U as router and the RT-N66U as wireless access point.
Am I correct? Otherwise rephrase your question with above knowledge in mind.

Main question is how you want to connect the RT-56U and RT-N66U together, wired or wireless?

The RT-N56U router I assume is working and shall be untouched.
In the RT-N66U look at:
Advanced Settings>Administration>Operation Mode
There are 3 options, if you click either (without Apply), you get some helpfull explanation about each mode purpose and setup.
Access Point mode requires a wired connection between the RT-N56U and RT-N66U.

In Advanced Settings>Wireless>Bridge, you find information about setup of a wireless connection between the RT-N56U and RT-N66U, so called WDS, Wireless Distribution System. WDS with standard firmware is not recommended because it only supports unsafe wireless encryption.

 

[thomaspleasance]

The RT-N56U device of Asus is a so called router, not a modem.
The router can optional be configured to work as an access point only.

The modem (Modulator-Demodulator) is connected to the incoming line of your ISP, either a DSL line (telephone line) or TV antenna cable. The modem picks the "hidden" Internet signal from the telepnone line of antenna cable and turns it into a standard TCP/IP network signal. Modems are often provided by the ISP.
The network signal out of the modem can be brought directly to a single computer to give it Internet access.

Todays households do have more than one computer or device that require internet, to distribute the single Internet connection out of the modem to multiple devices, you use a router. The router has a buildin network switch with multiple network ports to connect multiple devices.
Most routers these days also provide wireless access, and have a buildin wireless access point. So, with most routers like the RT-N56U you can use wired devices and wireless devices.

To extend the wireless coverage, you can hookup another wireless access point to the router. Most routers like the RT-N56U can also be configured to be an access point only.

You also mention gateway, a gateway is a device to connect one type of network to another type, with different protocols. In normal households that is not applicable.

Reading your question I believe that you want to setup the RT-N56U as router and the RT-N66U as wireless access point.
Am I correct? Otherwise rephrase your question with above knowledge in mind.

Main question is how you want to connect the RT-56U and RT-N66U together, wired or wireless?

The RT-N56U router I assume is working and shall be untouched.
In the RT-N66U look at:
Advanced Settings>Administration>Operation Mode
There are 3 options, if you click either (without Apply), you get some helpfull explanation about each mode purpose and setup.
Access Point mode requires a wired connection between the RT-N56U and RT-N66U.

In Advanced Settings>Wireless>Bridge, you find information about setup of a wireless connection between the RT-N56U and RT-N66U, so called WDS, Wireless Distribution System. WDS with standard firmware is not recommended because it only supports unsafe wireless encryption.

Let me explain better..

I have FTTP from the ONT i have connected the N56U as the N66U can't handle PPPoE at my speeds.

What i wanted to do if possible is just have the N56U in "bridge mode ( transparent Ethernet bridge)" and have the N66U act as a router.

The N56U and the N65U is connected via ethernet.

 

[wouterv]

Oh man, you have a rich family of device names in your mind, are you a DEC man?
A "transparent Ethernet bridge" is in modern times called a "network switch", in the old DEC times it was the name for a device to connect two DECNet network segments (think of Coax, 10Base5, the thick yellow "garden hose" kind of cable).

Back to your first drawing, I have added the wired connections (if understood correct):
ISP --PPPoE--wired--> RT-N56U(PPPoE client) --wired--> RT-N66U

What in this setup, do you want the RT-N56U to do?
Do you want to connect computers or other devices to it that need an Internet connection, wired or wireless?

What in this setup, do you want the RT-N66U to do? Is to overcome long distance between some computers and the RT-N56U?
Do you want to connect computers or other devices to it that need an Internet connection, wired or wireless?

If you have devices that need Internet access on both RT-N56U and RT-N66U, and if you really want your "transparent Ethernet bridge"...it is there, your Asus devices have a 4-port network switch buildin.
Setup the RT-N56U as router, WAN Connection Type "PPPoE" and with default LAN address 192.168.1.1.
Setup the RT-N66U as router, WAN Connection Type "Automatic IP" and change the LAN address to 192.168.2.1.
Connect the WAN port of the RT-N66U to a LAN port of the RT-N56U.

 

[sinshiva]

hey, not sure if this was intended, but the IPs you've given the routers puts them on separate networks.

i usually would do something like

x.x.x.1 -9 as my range for routers/managed switches/servers, .100-.200 for dhcp and everything else under .100 is for static dhcp/static configurations

cheers

 

[wouterv]

Yes, I know, but this way the setup is easiest for guaranteed operation. There are countless options and possibilities...if you know what you want and how to do it.
I am still curious and awaiting what the OP really intents to do with his two router devices.

 

[sinshiva]

maybe i missed something, but the only advantage i see is if he has his second router in double nat. otherwise, i foresee the different network only causing trouble, especially if he wants to use the second router as a wireless bridge, etc

[edit/] mixed up threads with another talking about wifi bridges, sorry, but the point still stands

 

[wouterv]

Well, lets await the reply of the OP and if he is able to tell us what he really wants. In my suggested way he can connect wired and wireless devices to both routers and both will grant Internet access, with a minimal configuration setup.