About the mapuser commands
The CIFS> mapuser commands are used to add, remove, or display the mapping between CIFS and NFS users.
Typically, a CIFSusername is a user coming from an AD server (with a specified domainname), or a locally created CIFS user on this system (local). An NFSusername is a user coming from a locally-created CIFS user on this system, or from a NIS/LDAP server configured in the network section.
Note:
To make sure user mappings work correctly with a NIS/LDAP server, Network> nsswitch settings may need to be adjusted in the Network> nsswitch section. You may need to move the position of ldap or nis in the Network> nsswitch section, depending on which name service is being used first.