recently helping solving a dhcp problem(i think so) in friend's xp , hes using cable modem connection ...

in xp i issued these commands consecutively ::

ipconfig /all
ipconfig /release
ipconfig /renew

somehow this solved the problem(not sure whether it will stays) but i'm curious about linux equivalents for the above consecutive commands ... or are there linux way to achieve the same solution in a consecutively manner similar to the above ?? ... what should i do ...


//not urgent just curious ...


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It is almost all in ifconfig. Have a look at man ifconfig for the details on everything it can do. In some distros, the ifup and ifdown scripts add some features to the plain vanilla ifconfig.

after googling ...

yes ... ifconfig will do the job alright ...
but do i still need to do a "dhcpcd -k" as root ??

i dont have dhcp so i cant test it ...


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`ipconfig /release` releases the dhcp lease, and `ipconfig /renew` asks a new one. So those commands only make sense in a DHCP environment. The Linux equivalent is `dhcpd` or `dhclient`, not `ifconfig` in this case.

That depends on your distro. For those distros that use ifup, you may not have to (although you would have to run ifup as root). However, if you don't have a dhcp server, ifup isn't going to work either.

What I don't understand is why you don't think you have a dhcp server available. If you ran ipconfig /renew on an XP box, that is going to be the rough equivalent of running dhcpcd ethX on a linux box. Now dhcpcd isn't the only dhcp client that is used. For example, dhclient is commonly used.

Going back to your first post, the rough equivalent to your sequence would be:

ifconfig (that will just show information, not do anything)
ifconfig ethX down
ifconfig ethX up
dhcpcd ethX -k