Double NAT and Strict NAT

[rajiv08]

@Phanindra Musinada Airtel people only came home, deleted original pppoe WAN routing connection, created a new WAN connection with Bridge mode and put ethernet cable from ISP LAN4 port to TP-Link router WAN port. So now my internet is working through TP-LINK router. Yes it's PPPOE only even in bridge mode.

 

[404Found]

Okay. I have no idea that Airtel uses pppoe. Then my instructions will not work. You have to use TP-Link router otherwise you will not get internet. Does your tp link router has any dmz option ?

 

[rajiv08]

@Phanindra Musinada Yes, TP-Router has DMZ option. I tried to put XBOX IP Address but didn't work.

Just so you know Airtel uses CGNAT. So I am behind CGNAT

 

[404Found]

Yeah I know. Jio is also under CGNAT. But upnp worked for me. I have no idea dude on what's wrong with your network. Maybe try this it might work.
1) log into your secondary router and note down wan/IP address
2) Now log into your primary router and enable dmz using IP of your secondary router.
3) save the settings and restart both the routers.

 

[Lolita_Magnum]

The way Jio has implemenented CGNAT and Airtel is very different.
You will not get Open NAT with Airtel, moderate at best.
The downside of having it implement like Jio's is the very short port reservation time-out; which is bad for connections like ssh.

 

[5zan]

@rajiv08 have same issue as you. Only solution for CG-NAT is to buy a static ip and use that instead of PPPoE in bridge mode.