A
APPC LU 6.2
(Context: Software)
APPC allows user written programs to perform transactions in a Client-Server IBM network to access a CICS, in MVS "batch" through APPC/MVS, in VM/CMS, in AIX on the RS/6000, and on the AS/400.
In computing, Advanced Program to Program Communication or APPC is a protocol which computer programs can use to communicate over a network. APPC is at the application layer in the OSI model, it enables communications between programs on different computers, from portables and workstations to midrange and host computers. APPC is defined as VTAM LU 6.2 ( Logical unit type 6.2 ).
Logical Unit 6.2 is an IBM-originated communications protocol specification dating from 1974, and is part of IBM's Systems Network Architecture (SNA). A device-independent SNA protocol, it is used for peer-to-peer communications between two systems, for example, between a computer and a device (e.g. terminal or printer), or between computers. LU6.2 is used by many of IBM's products, including Common Programming Interface for Communications Intersystem Communications (CICS ISC), and Information Management System, and also many non-IBM products.
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