NetApp
Configuration > Network > NIS : Managing NIS : Adding or editing the NIS domain name

Adding or editing the NIS domain name
You can use the Edit NIS Settings dialog box to add or modify the NIS domain name of your storage system.
Steps 
1.
From the Home tab, double-click the appropriate storage system.
2.
In the navigation pane, click Configuration > Network > NIS.
3.
Click Edit.
4.
In the NIS domain name field, type or change the NIS domain name.
5.
In the IP address field, type the IP address of the NIS server and click Add.
6.
Click Save and Close.