Changing network interface for interconnect (private IP)

Check existing settings:

To check nodes and status:

./olsnodes -s

To check n/w interface on a node:

/sbin/ifconfig -a


Add new interface  in cluster (new interface must be operational)

oifcfg setif -global if_name/subnet:cluster_interconnect

oifcfg setif -global eth1/10.10.0.0:couster_interconnect


Delete existing interface:

oifcfg delif -global if_name/subnet

oifcfg delif -global eth1/192.168.0.0

Verify new configuration

oifcfg getif

Stop Oracle Clusterware on all nodes as root user:

# crsctl crs stop

When Oracle Clusterware stops on all nodes, deconfigure the deleted network interface in the operating system using the ifconfig command

# ifconfig eth0 down

Update n/w config files in OS


Restart Oracle Clusterware by running the following command on each node in the cluster as the root user:

# crsctl start crs


If you use the CLUSTER_INTERCONNECTS initialization parameter, then you must update it to reflect the changes.