2 Router Setup w DD-WRT

[Collider]

Hi all,

I have the following networking setup in my house:

1. Default Verizon Fios router (G only) w coax cable in, wireless=off, only the Asus router is connected to it
2. Asus RT-N16 (G/N) (flashed w latest DD-WRT), this one has its WAN port connected to Verizon router, wireless=on; all other devices connect to this router, a couple thru Ethernet then 4-5 wirelessly.

I would have liked to get rid of the Vz router all together but because its connected w coax cable, so I'm stuck with it and have to hook up my asus router through it.

To get it to work this way I had to turn off DHCP on the 1st Verizon router (192.168.1.1) router and set a static IP for the Asus router (192.168.1.2). However since all of my PCs are connected to the Asus router I am not able to hit 192.168.1.1 for some reason.

Can anyone provide some constructive criticism for this setup, if its proper to have it setup this way, for some reason it just doesn't feel right. Also what would be a more ideal setup in my situation now?

Thanks.

 

[masteryoda34]

However since all of my PCs are connected to the Asus router I am not able to hit 192.168.1.1 for some reason.

Yes that is the expected behavior. The ASUS router has no way of knowing that the FIOS router is using 192.168.1.1 because it is outside the network. All the Asus router knows about are the devices on the LAN side of its interface. Maybe someone can give a better explanation.

I think there are at least a few solutions to this.

1. You could let the fios unit do NAT and DHCP, and run a cable from the fios unit to the LAN side of the Asus router. Turn off DHCP on the Asus. This way the Asus would function as a wired and wireless switch. Drawback, you loose some of the cool DD-WRT stuff since the Asus isn't doing a lot anymore.

2. There may be some way to add a static route into DD-WRT on the Asus unit. Basically you manually tell it to look on the WAN side for 192.168.1.1.

3. If you want to access the fios router, plug a computer into a port on the fios unit and manually assign IP address to it. Then you should be able to access it at 192.168.1.1. This would work well if you only need infrequent access to it.

There are probably more solutions I haven't listed.

 

[her209]

The way you've set it up is incorrect.

Sounds like you're trying to set up 192.168.1.0 /24 networks on both sides of the Asus router which will not work. You can do #1 as masteryoda34 suggested.

Or you can turn DHCP back on on the FiOS router and assign a different IP address to the Asus router that is outside of the 192.168.1.0 /24 network, for example, 192.168.2.1 /24. If you go this route, just make sure the DHCP daemon running on the Asus router is also handing out addresses in the 192.168.2.0 /24 address range.

 

[VirtualLarry]

The way you've set it up is incorrect.

Sounds like you're trying to set up 192.168.1.0 /24 networks on both sides of the Asus router which will not work. You can do #1 as masteryoda34 suggested.

Or you can turn DHCP back on on the FiOS router and assign a different IP address to the Asus router that is outside of the 192.168.1.0 /24 network, for example, 192.168.2.1 /24. If you go this route, just make sure the DHCP daemon running on the Asus router is also handing out addresses in the 192.168.2.0 /24 address range.

I've got a similar setup, I have two DD-WRT N routers in WDS mode, connected behind my Verizon FIOS N router.

The FIOS router is 192.168.1.1. I don't even remember if DHCP is enabled or disabled on it, I didn't mess with the config much.
My primary WDS router is 192.168.2.1, and my secondary WDS router is 192.168.2.2.
I have the WAN port of the primary WDS router connected to a LAN port on the FIOS router.
I do have the FIOS router configured to forward any unsolicited incoming traffic to 192.168.2.1, the primary WDS router.
I have UpNp enabled on the primary WDS router.

In this way, Upnp-enabled apps on my desktop can properly open up a hole in the NAT to recieve incoming requests, such as running a torrent program (rarely), or AIM webcam chat, etc.
I have DHCP enabled on the primary WDS router, to hand out addresses in 192.168.2.x, and disabled on the secondary WDS router.
I have the secondary WDS router in another room, connected to a gigabit switch, my NAS, and some desktop PCs with gigabit cards.

Amazingly, to those desktops, over the wireless N single-channel WDS link, I still get my full download bandwidth of 30Mbit/sec. Upload is only about 15Mbit/sec though.

Edit: Oh, and I can access 192.168.1.1, from a PC behind the 192.168.2.1 router.

 

[Concillian]

I don't know how you would enter it into the interface, but a router is a part of 2 different networks, and thus needs 2 different IP addresses.

DD-WRT WAN port --> Verizon router / modem = Intermediate WAN IP
LAN ports / wireless --> LAN IP

Each IP needs to be on a seperate network. Usually home networks are 192.168.x.y

Just changing y assumes it's on the same nework. You need a second IP with a different x value.

 

[Collider]

The way you've set it up is incorrect.
Or you can turn DHCP back on on the FiOS router and assign a different IP address to the Asus router that is outside of the 192.168.1.0 /24 network, for example, 192.168.2.1 /24. If you go this route, just make sure the DHCP daemon running on the Asus router is also handing out addresses in the 192.168.2.0 /24 address range.

This suggestion worked. Set Fios router w DHCP ON to handle 192.168.1.x, then set DD-WRT router w DHCP for 192.168.2.x. Able to hit both routers from PCs connecting to DD-WRT router.

Thanks to all for suggestions.