Technical Requirements 

External Systems

External systems must support TCP/IP.

SAP Systems

For RFC between external systems and SAP, there are no specific requirements in the SAP system.

SAP R/2 Systems

Contrary to this, RFC between SAP R/2 in an IBM environment and the SAP system or external systems requires an SAP gateway to run on a machine that supports the SNA LU6.2 protocol for the IBM host.  The SNA product must also be installed on this machine, and the SAP gateway must be operable with this product. This is necessary, because some SNA products are not compatible on the same machines.

The following SNA products are currently supported:

●      SNA services or SNA server on IBM-AIX machines

●      SNAplusLink on HP-UX machines

●      Communication Manager on OS/2

●      SNA server on Windows NT

●      SNALink SNA peer-to-peer 8.0 on SUN machines

●      TRANSIT-SERVER and TRANSIT-CPIC on SIEMENS-SINIX-machines.

 

●      IBM host (CICS): Release 5.0D with the following components:

○       082

Communication via Remote Function Call (RFC)

○       153

SAP Intersystem Communication

○       080

Host communication with DOS, OS/2

○       or 081

Host communication with other LU6.2 systems

●      IBM host (IMS): Probably not before IMS >= 4.1 with MVS/APPC

●      SNI host: Release 5.0D with the following components:

○       082

Communication via Remote Function Call (RFC)

○       153

SAP Intersystem Communication

○       083

Host communication via TCP/IP (BS2000)