I was doing another GI 18.104.22.168 cluster installation last month when I got really weird error.
While root.sh was running on the first node I got the following error:
2016/07/01 15:02:10 CLSRSC-343: Successfully started Oracle Clusterware stack 2016/07/01 15:02:23 CLSRSC-180: An error occurred while executing the command '/ocw/grid/bin/oifcfg setif -global eth0/10.118.144.0:public eth1/10.118.255.0:cluster_interconnect' (error code 1) 2016/07/01 15:02:24 CLSRSC-287: FirstNode configuration failed Died at /ocw/grid/crs/install/crsinstall.pm line 2398.
I was surprised to find the following error in the rootcrs log file:
2016-07-01 15:02:22: Executing cmd: /ocw/grid/bin/oifcfg setif -global eth0/10.118.144.0:public eth1/10.118.255.0:cluster_interconnect 2016-07-01 15:02:23: Command output: > PRIF-15: invalid format for subnet >End Command output
Quick MOS search suggested that my installation failed because I had 255 in the subnet ID:
root.sh fails with CLSRSC-287 due to: PRIF-15: invalid format for subnet (Doc ID 1933472.1)
Indeed we had 255 in the private network (10.118.255.0). Fortunately this was in our private network which was easy to change but you will still hit this issue if you public network has 255 subnet ID.