Cluster network “failed” Network ‘MapiDagNetwork’ has no network interface for server ‘ ..

hello All ,

I created DAG 2013 under Windows 2012 St.  ,when I tested test-dag heath replication cmdlt ,  I have the  issue with cluster network in one  of the DAG  nodes as shown below  

Cluster network  “failed”  Network ‘MapiDagNetwork’ has no network  interface for server ‘ …

for your help please.

Thank you .