On a single node in the cluster, add the new global interface specification:
$ oifcfg setif -global eth2/192.0.2.0:cluster_interconnect
Verify the changes with oifcfg getif and then stop Clusterware on all nodes by running the following command as root on each node:
# oifcfg getif
# crsctl stop crs
Assign the network address to the new network adapters on all nodes using ifconfig:
# ifconfig eth2 192.0.2.15 netmask 255.255.255.0 broadcast 192.0.2.255
Remove the former adapter/subnet specification and restart Clusterware:
$ oifcfg delif -global eth1/192.168.1.0
# crsctl start crs
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