until it assumes the shared IP address. Consequently, Clinfo makes known the boot address for this adapter.
In an HACMP for AIX environment on the RS/6000 SP, the SP Ethernet adapters can be configured as service adapters but should not be configured for IP address takeover. For the SP switch network, service addresses used for IP address takeover are ifconfig alias addresses used on the css0 network.
Standby Adapter A standby adapter backs up a service adapter. If a service adapter fails, the Cluster Manager swaps the standby adapter’s address with the service adapter’s address. Using a standby adapter eliminates a network adapter as a single point of failure. A node can have no standby adapter, or it can have from one to seven standby adapters for each network to which it connects. Your software configuration and hardware slot constraints determine the actual number of standby adapters that a node can support.
The standby adapter is configured on a different subnet from any service adapters on the same system, and its use should be reserved for HACMP only.
In an HACMP for AIX environment on the RS/6000 SP, for an IP address takeover configuration using the SP switch, standby adapters are not required.
Boot Adapter IP address takeover is an AIX facility that allows one node to acquire the network address of another node in the cluster. To enable IP address takeover, a boot adapter label (address) must be assigned to the service adapter on each cluster node. Nodes use the boot label after a system reboot and before the HACMP for AIX software is started.
In an HACMP for AIX environment on the RS/6000 SP, boot addresses used in the IP address for the switch network takeover are ifconfig alias addresses used on that css0 network.
When the HACMP for AIX software is started on a node, the node’s service adapter is reconfigured to use the
