A LIF role determines the kind of traffic that is supported over the LIF, along with the failover rules that apply and the firewall restrictions that are in place. A LIF can have any one of the five roles: node management, cluster management, cluster, intercluster, and data.
A cluster-management LIF can fail over to any node-management or data port in the cluster. It cannot fail over to cluster or intercluster ports.
Cluster LIFs can fail over between cluster ports on the same node, but they cannot be migrated or failed over to a remote node. When a new node joins a cluster, IP addresses are generated automatically. However, if you want to assign IP addresses manually to the cluster LIFs, you must ensure that the new IP addresses are in the same subnet range as the existing cluster LIFs.
You can have multiple data LIFs on a port. These interfaces can migrate or fail over throughout the cluster. You can modify a data LIF to serve as an SVM management LIF by modifying its firewall policy to mgmt.
For more information about SVM management LIFs, see the Clustered Data ONTAP System Administration Guide for Cluster Administrators.
Sessions established to NIS, LDAP, Active Directory, WINS, and DNS servers use data LIFs.