BSNL broadband connection with Linux

you can also install it on yum enabled distributions like Fedora Core simply by:
yum install rp-pppoe
It asks questions like your login name and password tarag(provided by BSNL), your ethernet interface (choose the default provided; works for most cases) etc. After the setup you should preferably reboot (or restart the network) and you will find your DSL connection up and running.

You can also manually bring up DSL connection by:
ifup ppp0

You can bring it down by:
ifdown ppp0

Note: Unless you have multiple DSL connections, ppp0 is a safe bet.