BSNL broadband does not work with Ubuntu 14.04

[vishalrao]

So if gateway is 192.168.1.1 then that is your modem/router IP address and for whatever reason you are able to browse net but NOT open the router's admin webpage

So try changing the netmask from 255.255.255.0 to 255.255.0.0 then open 192.168.1.1 - this is the last thing I can think of, then it's time for me to give up

 

[ashwin_d123]

Yes.

When I went to nearby BSNL office they reset the router OK ? And reconfigure DHCP. Works fine. Then I am able to connect via DHCP.

What happens after that is the issue. When I shutdown Ubuntu or Windows and reboot I am unable to get a DHCP connection. That is the problem.

At that point I am forced to take a manual static IP.

Why ? I do not know.

 

[vishalrao]

Hmmm, bad modem I guess When BSNL guys reset and reconfigure it probably works, then when you carry it back home, it is unable to store/remember the settings (maybe old battery/capacitor inside) and you have to get back to static IP.

OK last 2 things for you to try, then I guess we should stop scratching our heads:

1. In your browser do you type just the number "192.168.1.1" or also type HTTP:// before that? Try that?

2. Do you have virtual machine software installed, like VMware or VirtualBox? Sometimes they mess with LAN adapter settings (my Windows OS with VM software installed does not work in DHCP - similar issue to yours - but Linux OS on same machine works fine). - so I would suggest if you have the bootable Live ISO image of Ubuntu (14.04 or any other) you can boot that to check if you are getting DHCP IP from your router?

 

[ashwin_d123]

1) I try with http://192.168.1.1
2) I do not have virtual machine software installed like VMWare or VirtualBox.

I have a neighbor who has D-Link modem brand new. The issue is that the adapter is broken when he got it. So we will try that and see if the problem goes away. Thanks for your online support Vishal Rao.

I have to thank Dilip for his tireless efforts as well.

 

[vishalrao]

Cool, yes, will be good to know if you update us here after trying different/new modem/router and what is the result. Cheers.

 

[gambit]

Gambit - that is what happened ultimately. I had to enter manually enter IP address and log in. The question is why is that ? Why am I unable to access DHCP ?

I am unable to ping 192.168.1.1 on Ubuntu.

Reason you can't access DHCP is it is turned off on your modem/router, turn on DHCP from modem page.
Are you unable to ping 192.168.1.1 even after manually entering IP address?
After turning on DHCP, you will have to set manually entered IP address back to Automatic to see if DHCP is working.