Network Connection Test

[ideru]

I am doing a network connection test program but I have no idea how to do the DHCP.

For dns, gateway I am using ping command called by popen.
For DHCP , i was told to to a dhcp discovery. Basically the DHCP client is already running in DHCP server.

I read somewhere that ifdown, ifup command can be used to but have no idea how. Any idea ?

I am making the program in C ( Linux 2.6 ).

[henky@nok.co.id]

not really understand what you want to do and what you want to accomplish. Please be more specific when you post the question

[ideru]

not really understand what you want to do and what you want to accomplish. Please be more specific when you post the question

hello. I want to do a connection test on DHCP.

I am trying to execute the following function:

ifdown eth0
ifup eth0

then afterwards check if connection to DCHP server was successful. I tried it already but unfortunately the current internal ethernet on the board am working now is a bit defective, so it hangs up after i execute the down command.

The next question is that, if the commands where successful, which file(s) tells me that the connection was successfully executed ?

/etc/resolve.conf?



Its a busybox , so commands and resources are very limited.

The command : "udhcpc" might also be used but I am still trying to understand it now.