I was working on ndmpcopy on Ontap 8.3.2.p2.
The cluster is running in vserver scope and the ndmp is on. The ndmp protocol is enable on the vserver.
I run ndmpcopy and got the authentication failed message.
cluster::> node run -node node ndmpcopy -sa ndmpuser:password -da ndmpuser:password source-ip:/vserver/volume dest-ip:/vserver/volume
Ndmpcopy: Starting copy [ 44 ] ...
Ndmpcopy: source-ip: Notify: Connection established
Ndmpcopy: dest-ip: Notify: Connection established
Ndmpcopy: Authentication failed for source