Communication with CICS servers

You can use these protocols to communicate with CICS® servers:
TCP/IP
TCP/IP is a widely used, robust, suite of protocols, particularly useful in connecting heterogeneous networks.
SNA
The CICS Universal Client uses Advanced Program-to-Program Communication (APPC) to provide SNA LU 6.2 communication. APPC is an implementation of the SNA LU 6.2 protocol that provides device-independent application-to-application communication over LU 6.2 sessions.
Local Named Pipe
Start of changeTXSeries® for Windows® and CICS Transaction Server for Windows can use the Local Named Pipe protocol to communicate with a CICS Universal Client that is on the same computer, providing a fast communications method independent of any network protocol. Named Pipe Communications are not supported on Windows Vista.End of change

The protocols that you can use for the various client/server connections are shown in Table 1. This table lists the protocols that you can use to connect your CICS Universal Client to your CICS server. It also shows whether EPI emulation and ECI are supported for your combination of CICS server and CICS Universal Client operating system. indicates that the protocol or feature is supported; indicates that it is not supported.

Table 1. Protocols and functions supported.
SERVER TCP/IP SNA ECI

EPI
See note

ESI
CICS Transaction Server for z/OS® V3.2 (ECI only)
CICS Transaction Server for z/OS V2.2, V2.3 and V3.1 (ECI only)
CICS Transaction Server for VSE/ESA™ V1.1.1 (ECI only)
CICS/VSE® V2.3
Start of changeTXSeries V5.1, V6.0 and V6.1End of change Start of change (ECI and EPI only)End of change Start of changeEnd of change Start of changeEnd of change Start of changeEnd of change Start of changeEnd of change
CICS Transaction Server for Windows V5.0
Start of changeCICS Transaction Server for iSeries™ V5.3End of change Start of change End of change Start of changeEnd of change Start of changeEnd of change Start of changeEnd of change Start of changeEnd of change
Start of changeCICS Transaction Server for i5/OS® V5.4End of change Start of change End of change Start of changeEnd of change Start of changeEnd of change Start of changeEnd of change Start of changeEnd of change
Note: EPI also incorporates CICS 3270 terminal emulation and CICS 3270 client printer support.