Check that you have the networking hardware and internet protocol (IP) addresses required for an Oracle Grid Infrastructure for a cluster installation.

• 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.
• Understanding Network Addresses
  During installation, you are asked to identify the planned use for each network interface that Oracle Universal Installer (OUI) detects on your cluster node.
• Network Interface Hardware Minimum Requirements
  Review these requirements to ensure that you have the minimum network hardware technology for Oracle Grid Infrastructure clusters.
• Private IP Interface Configuration Requirements
  Requirements for private interfaces depend on whether you are using single or multiple Interfaces.
• IPv4 and IPv6 Protocol Requirements
  Oracle Grid Infrastructure and Oracle RAC support the standard IPv6 address notations specified by RFC 2732 and global and site-local IPv6 addresses as defined by RFC 4193.
• Oracle Grid Infrastructure IP Name and Address Requirements
  Review this information for Oracle Grid Infrastructure IP Name and Address requirements.
• Broadcast Requirements for Networks Used by Oracle Grid Infrastructure
  Broadcast communications (ARP and UDP) must work properly across all the public and private interfaces configured for use by Oracle Grid Infrastructure.
• Multicast Requirements for Networks Used by Oracle Grid Infrastructure
  For each cluster member node, the Oracle mDNS daemon uses multicasting on all interfaces to communicate with other nodes in the cluster.
• Domain Delegation to Grid Naming Service
  If you are configuring Grid Naming Service (GNS) for a standard cluster, then before installing Oracle Grid Infrastructure you must configure DNS to send to GNS any name resolution requests for the subdomain served by GNS.
• Configuration Requirements for Oracle Flex Clusters
  Understand Oracle Flex Clusters and their configuration requirements.
• Grid Naming Service Cluster Configuration Example
  Review this example to understand Grid Naming Service configuration.
• Manual IP Address Configuration Example
  If you choose not to use GNS, then before installation you must configure public, virtual, and private IP addresses.
• Network Interface Configuration Options
  During installation, you are asked to identify the planned use for each network adapter (or network interface) that Oracle Universal Installer (OUI) detects on your cluster node.
• Multiple Private Interconnects and Oracle Linux
  Review this information for settings for the rp_filter parameter for Oracle RAC systems that use multiple NICs for the private interconnect.