The IPX_SERVICE structure MAY<112> be used to contain information about the IPX service and is part of the IPX_MIB_ROW (section 2.2.1.2.110) structure. 

 typedef struct _IPX_SERVICE {
   ULONG InterfaceIndex;
   ULONG Protocol;
   IPX_SERVER_ENTRY Server;
 } IPX_SERVICE,
  *PIPX_SERVICE;

InterfaceIndex: This MUST be the interface index.

Protocol: This MUST be the protocol from which knowledge of the service was obtained.

Server: This MUST be an IPX_SERVER_ENTRY (section 2.2.1.2.94) structure.