About Private Networks and Network Interfaces

Oracle Clusterware requires that each node is connected through a private network (in addition to the public network). The private network connection is referred to as the cluster interconnect. Table 2-1 describes how the network interface card and the private IP address are stored.

Oracle only supports clusters in which all of the nodes use the same network interface connected to the same subnet (defined as a global interface with the oifcfg command). You cannot use different network interfaces for each node (node-specific interfaces). Refer to Oracle Interface Configuration Tool (OIFCFG) Command Reference for more information about global and node-specific interfaces.

Table 2-1 Storage for the Network Interface, Private IP Address, and Private Host Name

Entity Stored In... Comments

Network interface name

Operating system

For example: eth1

You can use wildcards when specifying network interface names.

For example: eth*

Private network Interfaces

Oracle Clusterware, in the Grid Plug and Play (GPnP) Profile

Configure an interface for use as a private interface during installation by marking the interface as Private, or use the oifcfg setif command to designate an interface as a private interface.

See Also: "OIFCFG Commands" for more information about the oifcfg setif command