Steps to Change Public and VIP in 11gR2 RAC

Hi All,

we are planning to change subnet of our piblice IP. but when we change the subnet of Public IP, we have  to change VIPs as wele, below are the steps that we can use to do the actvity.

Change of Public Subnet.

Step-1

 %$CRS_HOME/bin/oifcfg delif -global eth0/10.2.156.0
 % $CRS_HOME/bin/oifcfg setif -global eth0/10.2.166.0:public

Question :- for the above commands

a-above commands will be executed while clusterware and all service are up and running  ?

b- need to execute only on one node ?

Step-2

Make the changes at OS level with now IPs, Subnet (Will be done on All Nodes )