How do I perform network boot of PowerLinux system over a gateway since the systems are on different subnets?

ANSWER

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For details on performing network boot of IBM PowerLinux see the network boot section of the SBAdmin Linux System Recovery Guide. Here you will find a sample entry to be used at the Open Firmware prompt.

ok> boot network console=hvc0 load_ramdisk=1 init=/init ramdisk_size=65536 rw selinux=0 raid=noautodetect

It is possible to specify the server IP, the client IP and gateway as part of this this command as follows:

sss.sss.sss.sss = server ip
ccc.ccc.ccc.ccc = client ip
gw.gw.gw.gw = gateway

ok> boot /vdevice/l-lan@30000004:speed=auto,duplex=auto,sss.sss.sss.sss,,ccc.ccc.ccc.ccc,gw.gw.gw.gw console=hvc0 load_ramdisk=1 init=/init ramdisk_size=65536 rw selinux=0 raid=noautodetect