4.1 About Oracle Grid Infrastructure Network Configuration Options
Ensure that you have the networking hardware and internet protocol (IP) addresses required for an Oracle Grid Infrastructure for a cluster installation.
Oracle Clusterware Networks
An Oracle Clusterware configuration requires at least two interfaces:
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A public network interface, on which users and application servers connect to access data on the database server.
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A private network interface for internode communication.
You can configure a network interface to use either the IPv4 protocol, or the IPv6 protocol on a given network. If you use redundant network interfaces (bonded or teamed interfaces), then be aware that Oracle does not support configuring one interface to support IPv4 addresses and the other to support IPv6 addresses. You must configure network interfaces of a redundant interface pair with the same IP protocol.
All the nodes in the cluster must use the same IP protocol configuration. Either all the nodes use only IPv4, or all the nodes use only IPv6. You cannot have some nodes in the cluster configured to support only IPv6 addresses, and other nodes in the cluster configured to support only IPv4 addresses.
The VIP agent supports the generation of IPv6 addresses using the Stateless Address Autoconfiguration Protocol (RFC 2462), and advertises these addresses with GNS. Run the srvctl config network command to determine if Dynamic Host Configuration Protocol (DHCP) or stateless address autoconfiguration is being used.
See the Certify page on My Oracle Support for the most up-to-date information about supported network protocols and hardware for Oracle RAC: