When designing a network to use NIS, you must ensure that its performance cost, measured by all users doing "normal" activities, does not exceed its advantages.
You can also use these commands to test the functionality of the NIS service.
NIS servers must be configured so that map information remains consistent on all servers, and the number of servers and the load on each server should be evaluated so that there is not a user-noticeable penalty for referring to the NIS maps.
Ideally, NIS streamlines system administration tasks by allowing you to update configuration files on many machines by making changes on a single host.
If the above commands do not make it clear what your problem is, you might want to consult the NIS files.
If a NIS server is doing something incorrect during map distribution, you should look at the /var/yp/Makefile on the NIS server.