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2 ISP connections on single Network - Asus RT-N66U

post #1 of 4
Thread Starter 
I am having some trouble setting up 2 different internet connections on the Asus RT-N66U router. It worked before and I have the most current firmware for it and the other modem/router. It was working prior to updating the recent firmware on the Asus, but my settings are still the same.

Here is how I had it working prior:

I have a main network on 192.168.1.1 (the Asus router) and subnet 255.255.255.0 for everything.

IP addresses were fixed starting at 192.168.1.11 and up for all devices that needed assignment. The addresses from 192.168.1.1 - 192.168.1.10 were reserved. ALL of my internet services and Wi-Fi WAP are set to use those ranges.

The main ISP service is connected to the WAN port on the Asus router.

My second ISP service, DSL, was configured to 192.168.1.2 so it's on the same network.

I set the options on the DSL router to DISABLE all Wi-Fi and Firewall/security.

I then ran an Ethernet cable from the uplink port on the DSL modem/router to one of the Ethernet ports on the Asus router.

This allowed me to access BOTH the Asus router AND the DSL modem/router using either 192.168.1.1 or 192.168.1.2

Then, I manually set all devices and computers to use whichever internet service I wanted on each of the two different LAN connections stated above.


This worked fine and was going perfect until recently. Now, I can't access the 192.168.1.2 unless it is connected DIRECT to my computer. If you connect it to one of the LAN ports on the Asus router as before, you can not access it from a web browser. ONLY via direct connection does it work.

So, I am puzzled as to what is going on since this worked before? I double checked all settings on the Asus and the DSL modem/router and believe they are the same. It seems like I am overlooking something though, but not sure what it is. I have posted some screenshots below and could use some advice troubleshooting this.

Thanks.







post #2 of 4
Are you changing the default route on the computers in order to change the connection they are using?

I'm curious if the problem is related to the firmware update. It looks like they did some stuff related to how the router deals with routing so that may be what is killing it. I would try setting a route in LAN -> route for Network 0.0.0.0, subnet 0.0.0.0, gateway 192.168.1.2, priority 1, interface LAN. That should force all packets going to the router to go out to the other modem.

http://support.asus.com/download.aspx?slanguage=en&m=RT-N66U+(VER.B1)&os=8
8. Dual wan fail over now support fail back
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PSU is original
(20 items)
 
  
CPUMotherboardGraphicsGraphics
AMD 8120 ECS A990FXM-A Deluxe GTX 580 windforce GTX 570 windforce 
RAMRAMHard DriveOptical Drive
Kingston 2*2GB 2133Mhz Kingston 2*2GB 1333Mhz 2*1 TB WD Green spanned LightScribe CD/DVD Burner 
CoolingOSMonitorMonitor
6 * 120mm  Win 7 Pro 64bit Vizio m3d420sr Asus VS247H-P 
MonitorKeyboardPowerCase
17" eMachine Monitor Logitech G510 Rosewill 100w modular rsv4000 
MouseAudioOtherOther
Logitech G500 Ultrasone pro 750 IDE expansion card usb to rs-232 
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post #3 of 4
Thread Starter 
Quote:
Originally Posted by tlsr View Post

Are you changing the default route on the computers in order to change the connection they are using?

I'm curious if the problem is related to the firmware update. It looks like they did some stuff related to how the router deals with routing so that may be what is killing it. I would try setting a route in LAN -> route for Network 0.0.0.0, subnet 0.0.0.0, gateway 192.168.1.2, priority 1, interface LAN. That should force all packets going to the router to go out to the other modem.

http://support.asus.com/download.aspx?slanguage=en&m=RT-N66U+(VER.B1)&os=8
8. Dual wan fail over now support fail back

It may be, I still have not figured out what the issue is. The problem is, you can't set a LAN route unless it shows up in the listing and is detected by the router. That's why I can't log into the DSL router when connected to the Asus router using the 192.168.1.2, it does not show when connected. If the Asus router saw the DSL router, I could setup the LAN route as you mentioned.

Not sure what else to try or do at this point. Seems like every setting I change still does not allow it. I still think it must be something I am overlooking or some setting that needs changed. Any other thoughts on this?

Thanks.

post #4 of 4
My only other thought would be to change the dsl modem to 192.168.2.1 and create a sub interface on computers that use that modem to connect to the internet.
PSU is original
(20 items)
 
  
CPUMotherboardGraphicsGraphics
AMD 8120 ECS A990FXM-A Deluxe GTX 580 windforce GTX 570 windforce 
RAMRAMHard DriveOptical Drive
Kingston 2*2GB 2133Mhz Kingston 2*2GB 1333Mhz 2*1 TB WD Green spanned LightScribe CD/DVD Burner 
CoolingOSMonitorMonitor
6 * 120mm  Win 7 Pro 64bit Vizio m3d420sr Asus VS247H-P 
MonitorKeyboardPowerCase
17" eMachine Monitor Logitech G510 Rosewill 100w modular rsv4000 
MouseAudioOtherOther
Logitech G500 Ultrasone pro 750 IDE expansion card usb to rs-232 
  hide details  
Reply
PSU is original
(20 items)
 
  
CPUMotherboardGraphicsGraphics
AMD 8120 ECS A990FXM-A Deluxe GTX 580 windforce GTX 570 windforce 
RAMRAMHard DriveOptical Drive
Kingston 2*2GB 2133Mhz Kingston 2*2GB 1333Mhz 2*1 TB WD Green spanned LightScribe CD/DVD Burner 
CoolingOSMonitorMonitor
6 * 120mm  Win 7 Pro 64bit Vizio m3d420sr Asus VS247H-P 
MonitorKeyboardPowerCase
17" eMachine Monitor Logitech G510 Rosewill 100w modular rsv4000 
MouseAudioOtherOther
Logitech G500 Ultrasone pro 750 IDE expansion card usb to rs-232 
  hide details  
Reply
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