SAP NS ping connection drops

Hi Guys ,

We have 2 Vdoms .Root vdom facing external and Core is for internal .The Sap-router is in the DMZ which is directly connecetd to root VDOM and SAP production servers are Directly connected to Core VDOM .when we try to do Nsping to Sap production server  show broken and error is connection reset by Peer .But out of 5 connection 2 drops and 3 pass .

We have increased session-ttl for 3200 UDP port in the both VDOM system .Appreciate for supports or tips .

The Error is attached  .