How to change Cluster Interconnect Adapter IP Address in 11gR2 RAC

Cluster interconnect: It’s a private interface used for the cluster-ware to provide inter-instance or
Cache Fusion communication. This is also called as private IP address.

We can change it at any stage, it require full outage.
Step 1: Determine private IP address

[oracle@test1 ~]$ oifcfg getif
eth0  192.168.1.0  global  public
eth1  10.0.0.0  global  cluster_interconnect

Step 2: Determine Ethernet card name

[oracle@test1 ~]$ oifcfg iflist
eth0  192.168.1.0
eth1  10.0.0.0

Step 3: Add new interface Subnet ID specification:

[oracle@test1 ~]$ oifcfg setif -global eth1/172.16.0.0:cluster_interconnect

Step 4 : Verify the changes: