The Question is:
Is it possible to run LU6.2 (APPC) over TCP/IP?
Currently we have an application which sends and receives data from an IBM host
(CICS) via LU6.2 SNA connection. The application runs on a VAX in a DECNET
environment and communicates to the IBM system via an SNA gateway. We would
like to eliminate the
gateway and run the application over a TCP/IP network. The IBM machine
supports LU6.2 over TCP via the VTAM ANYNET product. Is there software
available for the VAX/VMS environment which will allow us to do this
(preferably without having to change the e
xisting application code)?
The Answer is :
This function is defined by the MPTN (multi-protocol transport networking)
architecture, and provided in the AnyNet/MVS product.
The AnyNet product is not "SNA over TCP/IP", it provides a way of running
the LU6.2 protocols (i.e. session/presentation services) over a TCP/IP
transport network connection. If you want APPC over an IP network, then
you need to run a higher layer protocol -- like LU6.2 -- on top of TCP,
as TCP is simply a reliable byte-stream network transport.
The BEA MessageQ, IBM MQ Series and related middleware products might
be of interest here. The Compaq SNA APPC/LU6.2 Programming Interface
for OpenVMS (V2.4 is current as of this writing; see SPD 26.88.xx) will
be of particular interest.