Guide to connect Airtel modem router to any other router seamlessly without bridge mode


Well-Known Member
Just wanted to share how i got my Netgear X4S (R7800) router working seamlessly using DMZ on Airtel router modem Nokia G-140W-F . Both work individually (act as DCHP servers) and devices can connect to both. I personally disable wireless radios of my Airtel and only use Netgear for all my connections. No need for bridge mode either.

I had to find these on my own as Airtel didn't want anything to do with any other router. Even when i was able to get internet working there were issues with online gaming because of nat connectivity which now works as it should.

You need to have access to each router settings page separately. Best way is to connect using ethernet individually to each through a laptop and configure each. After setup join them using ethernet cable. Although if you have default wifi setup already you can connect using your phone to access their configuration pages usually

Settings for Airtel router ( in my case)

1 - LAN Settings: To get your other router working seamlessly first you need to know the MAC address of the other router you are connecting to the airtel one. This is usually written itself on the router at the back. This is because you need to setup DMZ on your airtel router for your other router (step 2). For that you need to give that router a static ip from your airtel router. Use any one from its DHCP range (i set mine for for example).


2 - DMZ: Enable DMZ as below after you have added a static entry for your other router.


3 - Finally DNS, Firewall and UPnP settings need to be like this (if its not already)




Rest of the settings don't need to be touched.

Now for your other router settings.
4 - Internet Setup (WAN): Since Airtel will be making internet connection you don't need to using your ISP login settings on your other router and let them remain on default. Here are mine on my Netgear for example:


5 - Lan Settings: My netgear auto-switched from to once it detected a conflict with airtel. You can use any ip adress you want like or etc


6 - Nat and UPnP: Nat should be disabled on this router as it creates a conflict with airtel where it is enabled



7 - Now with both routers configured connect them using ethernet cable. The cable should go into internet (coloured) port of your other router.




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Well-Known Member
@thegr8anand : thanks for sharing your guide.

I have the Airtel V Fiber installed with the Rs.999/200mbps plan coupled with the GPON BDT-121 router. The promised speeds i.e. 200mbps are being attained but only if the device is close to the router placed in living room and as we move far in the bedrooms, the speed drops considerably and is close to only 50-55 mbps.

Can you please recommend in terms of a layman the best approach I can adopt in order to have best speeds i.e. atleast >150-175mbps in all corners of my home? Can I buy a new modem/router and configure it for my connection or do you recommend using another router at wifi repeater/extender? I am unsure of either and looking forward to your best suggestions.

Thank you!


Well-Known Member
Repeater will slow you down so not what you are looking for. If you can extended with another router using ethernet then its the best solution. If your house is not long and flat then maybe a better router MIGHT help. But even then the wifi module of connected devices also make a difference meaning you just can't get full speed on that device. So if you can run ethernet cable around the house and add router to it you can get full speed.


Well-Known Member
@thegr8anand : I'm unable to find another GPON modem+router that should be a plug and play for Airtel and hence I was wondering to adopt an approach similar to the one above. i.e. leave the existing BDT-121 connected as it is and purchase TP Link Archer C6. I believe this might resolve the issue of absymal speeds indoors since i primarily believe it is due to that cheapo- airtel router.

any other router that you'd recommend? And also, you prompt response before is highly appreciated :)


Well-Known Member
Nothing will be plug and play. As i said new router might help but probably not as much as you are expecting. Even expensive routers don't mean more coverage. If you can run a longer ethernet cable and place the new router in a different location you can use both routers separately and cover your house that way. Also use 2.4G band as it has more range than 5G.


Well-Known Member
I have used exactly the same setup but not the best . Would suggest the following method

On second router
1. Disable DHCP
2. Connect the lan wire to normal port and not wan
3. Under lan, give a static IP, probably

First airtel router
1. Change the DHCP settings so it can start from or further onnto avoid ip address conflict with 2nd router

That's it


1. I have enabled upnp in first, so it will work across any router. Same goes with ftp as I connected 1tb hdd to first router
2. All ip address will be in same segment