Answering to the bootp-request of the nim-client is just one facette in installing a client via nim. You can not install an AIX -machine with sun, nor can you bring a nim master on SUN or any other UNIX, this is IBM only!
As I do not know, what you exactly want to do, I suggest, that you want to clone machine A to machine B. Both of the machines have tape-drives?? I so, even if you have different platforms to install in, you can always boot from origianl AIX-CDs in maintmode, choose "Install from a system backup" and choose the Tapedrive where the mksysb is on.
If you do not have tape-drives in any machine, you will have no other choice to setup an NIM Master ( which is easy with script nim_master-setup from bos.sysmgt.nim.client ).
madmurdock
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