Owner's Manual

Configuring Your Network 15
IP Address and Name Resolution Requirements
For a Cluster Using GNS
The basic requirements for setting up an Oracle 11g R2 RAC using
Oracle Global Naming Server (GNS) are:
• At least two interfaces configured on each node, one for the private
IP address and one for the public IP address.
• A Domain Naming Server (DNS) running in the network for the address
resolution of GNS virtual IP address.
• The DNS entry to establish DNS Lookup to direct DNS resolution of a
sub-domain to the cluster.
• A DHCP service running on the public network for the cluster.
• Sufficient addresses on the DHCP to provide one IP address for each node's
virtual IP, and three IP addresses for the cluster used by SCAN.
Table 2-2 describes the different interfaces, IP address settings,
and the resolutions in a cluster.
Table 2-2. IP Address Settings in a Cluster Using GNS
Interface Type Resolution
Public Static /etc/hosts
Private Static Not Required
Node virtual IP DHCP GNS
GNS virtual IP Static DNS
SCAN virtual IP DHCP GNS