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Common Communications Interface › TCP/IP Configurations › Example: Configuration with Two z/OS Systems and Multiple PCs

Example: Configuration with Two z/OS Systems and Multiple PCs

The following illustration shows a TCP/IP configuration with two connected z/OS systems and multiple PCs connected to one system using CAICCI TCP/IP client‑server:

This diagram shows a TCP/IP configuration with two connected z/OS systems and multiple PCs connected to one system using CAICCI TCP/IP client-server.

The configuration uses the following CAICCI TCP/IP protocols:

The CAICCI control option member on the respective z/OS system contains the following CAICCI control options:

z/OS System

CAICCI Control Option

A

SYSID(CCIA)
PROTOCOL(TCPIP)
PROTOCOL(TCPIPGW)
NODE(TCPIPGW,CCIB.COM,01,CCIB,8192,START/SHUT)
CONNECT(CCIB)

B

SYSID(CCIB)
PROTOCOL(TCPIP)
PROTOCOL(TCPIPGW)
NODE (TCPIPGW,CCIA.COM,01,CCIA,8192,START/SHUT)
CONNECT(CCIA)
SYSID

Defines CAICCI on the z/OS system.

PROTOCOL

Specifies the CAICCI TCP/IP protocols.

For SSL, the PROTOCOL control options are similar to:

PROTOCOL(TCPSSL,1202,1,CCIx,16384)
PROTOCOL(TCPSSLGW,1721,1,CCIx,16384)
NODE

Specifies the remote node.

To use the logical host names, CCIA.COM and CCIB.COM, the TCP/IP environment must be able to reference a TCP/IP domain name server (DNS) or has a host name table that can translate the specified names to IP addresses.

Set the data packet size (8192 in this example) slightly smaller than the maximum transmission unit (MTU) supported by your TCP/IP configuration.

CONNECT

Connects the system to the remote node.

Note: Similar configuration is suitable for connecting other full‑function CAICCI platforms to the mainframe, including UNIX and Windows.

For the PC-to-mainframe client‑server configuration, no further changes are required on the mainframe. In a client-server configuration, the remote PCs initiate the connections, which require CAICCI be configured on the PCs.