Clients running Clinfo
The Clinfo program calls the /usr/es/sbin/cluster/etc/clinfo.rc script whenever a network or node event occurs. By default, this action updates the system's address resolution protocol (ARP) cache to reflect changes to network addresses. You can customize this script if further action is needeed.
Reconnecting to the cluster
Clients running the Clinfo daemon can reconnect to the cluster quickly after a cluster event. If you have hardware other than IBM® System p® between the cluster and the clients, make sure that you can update the ARP cache of those network components after a cluster event occurs.
If you configure the cluster to swap hardware addresses as well as IP addresses, you do not need to be concerned about updating the ARP cache. However, be aware that this option causes a longer delay.
If you are using IPAT via IP aliases, make sure all your clients support TCP/IP gratuitous ARP.
Customizing the clinfo.rc script
For clients running the Clinfo daemon, decide whether to customize the /usr/es/sbin/cluster/etc/clinfo.rc script to do more than update the ARP cache when a cluster event occurs.