CGNAT on BSNL FTTH

[NikhilS]

So yeah! BSNL is testing CG-NAT on both Broadband and FTTH connections.

Here is a separate thread for the same.

I’m getting 10.XX gateway on my router.
And 54.XX as a public IP (on speedtest)

 

[NikhilS]

Here you go!

 

[vishalrao]

Remind us of where are you located? Still normal public dynamic IP for my BSNL FTTH connection here in Pune/Maharashtra.

 

[vishalrao]

I get either 117.x.x.x IP range or 103.x.x.x as usual.

 

[varkey]

That only shows the gateway, what is your IP address ie the IP address assigned to you after the PPPoE authentication as shown in the ONT device @Nikhil Sharma

 

[vishalrao]

Yeah click on "IPv4" or "WAN" on the left menu of your device, it should be there...

 

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[NikhilS]

I’ll be able to see that tomorrow. Had to send my ONT to the vendor (Syrotech) as the voice was not working. But yes! It was different from the PUBLIC IP

Edit: I’m from a small town called Gadarwara in Madhya Pradesh

 

[NikhilS]

Found a screenshot.
IP Address: 10.91.144.x
Gateway: 10.91.144.x

Public IP: 117.xxx.xxx.xx

Don’t know if it’s CGNAT but this is what I had back in April.

 

[varkey]

Thanks @Nikhil Sharma, the reason I asked for the assigned IP address (and not just the gateway IP address) is cause in PPPoE, the gateway doesn't necessarily have to be on the same subnet, so you can still get a public IP and have a gateway IP address which is from a private range.

So just wanted to confirm that.

Luckily for me in Kerala, I still get assigned a public IP address which is same as the externally visible IP address.

 

[varkey]

Found a screenshot.
IP Address: 10.91.144.x
Gateway: 10.91.144.x

Public IP: 117.xxx.xxx.xx

Don’t know if it’s CGNAT but this is what I had back in April.

Btw are you sure thats the internet WAN interface? Cause it looks similar to the VOIP WAN IP ranges and that indeed uses the 10.x.x.x range.

 

[NikhilS]

MY old ONT didn’t show the assigned IP. But yes! I’ll be happy if they give me a public dynamic IP. Anyways let’s see.

Edit: Yes. It was in 10.XX range as shown in the screenshot.

Also, when I talked to the JTO he also asked me to get a static IP as they are implementing some changes.

 

[varkey]

From the screenshot that is the voice interface, not the internet WAN, so no you are not behind CG NAT at this point.

 

[NikhilS]

Yes! I had attached the wrong screenshot and had to delete it. It’s indeed a voice IP 😢