TCP/IP communications can be used with DB2 Server for VSE using DRDA protocol. DB2 Server for VSE application requesters can use DRDA remote unit of work over TCP/IP to access remote DRDA-capable servers (including remote DB2 Server for VSE and DB2 Server for VM servers.) Non-DB2 Server for VSE requesters can use DRDA remote unit of work over TCP/IP to access remote DB2 Server for VSE servers (including remote DB2 Server for VSE and DB2 Server for VM requesters).