Sorry, I can't understand your question.
With NetApp HA - the IP used to serve NFS moves between nodes. The specifics of how this is done depends on your ONTAP version.
Assuming you are using Clustered ONTAP 8.3 or newer - each node needs an SP and a node management IP. The cluster of two nodes also has a cluster management IP. Then there will be a SVM created, and that SVM will have a LIF (Logical Interface) with an IP address used to access NFS from the NetApp.