When inheriting IP addresses, set a logical IP address and host name that correspond to the logical IP address (host name of the IP address that is set in the IP type resource). Also, set up this logical IP address so it can be replaced on multiple server machines using the system switchover facility. Figure 25-54 shows a network configuration example for when inheriting IP addresses.
Figure 25-54 Network configuration example when inheriting IP addresses (using ClusterPerfect)
When not inheriting IP addresses, set a different IP address and host name in the primary system and secondary system. Therefore, you must specify the host name of the secondary system in the pdunit -c operand of the HiRDB system common definition. Figure 25-55 shows a network configuration example for when IP addresses are not inherited.
Figure 25-55 Network configuration example when not inheriting IP addresses (using ClusterPerfect)