The rnetboot command will force an unattended network install for a range of nodes (diskless) Front end to nodeset noderange netboot; rpower noderange boot.
=head1 OPTIONS
B<-C> IP address of the partition to network boot.
B<-G> Gateway IP address of the partition specified with the -C option.
B<-h> Display usage message.
B<-m> MAC address of the network adapter to use for network boot.
B<-S> IP address of the machine from which to retrieve the network boot image during network boot.