NAFO Groups

Add this planning information to the "Public Networks Worksheet" in the Sun Cluster 3.0 12/01 Release Notes.

A Network Adapter Failover (NAFO) group provides public network adapter monitoring and failover, and is the foundation for a network address resource. If a NAFO group is configured with two or more adapters and the active adapter fails, all of the NAFO group's addresses fail over to another adapter in the NAFO group. In this way, the active NAFO group adapter maintains public network connectivity to the subnet to which the adapters in the NAFO group connect.

Consider the following points when you plan your NAFO groups.

• Each public network adapter must belong to a NAFO group.

• Each node can have only one NAFO group per subnet.

• No more than one adapter in a given NAFO group can have a hostname association, in the form of an /etc/hostname.adapter file.

• The NAFO group naming convention is nafoN, where N is the number you supply when you create the NAFO group.

For more information about Network Adapter Failover, see Sun Cluster 3.0 12/01 Concepts.