Configuration Tool Online Help

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TCP/IP Settings

Partial Table-of-Contents

  • Hostname or IP address
  • Port
  • Connection timeout
  • Send TCP/IP KeepAlive packets
  • These settings are specific to the TCP/IP protocol.


    Host name or IP address

    Enter the character or numeric TCP/IP identifier for the host on which the CICS® server is running.

    For example, cicssrv2.company.com (host name) or 192.113.36.200 (IP Address).

    Host names are mapped to IP addresses either by the name server or in the hosts system file. It is better to use a host name in case the IP address changes.

    Windows® operating system:

    The hosts system file is in the %windir%\system32\drivers\etc directory.

    UNIX® and Linux® operating systems:

    The hosts system file is in the /etc directory.


    Port

    Enter a numeric value in the range 0 through 65,535 defining the port number at the server to which the Client daemon connects.

    The default value is 0. If you enter a value outside the permitted range, the Configuration Tool warns you. If the value entered is too low, it substitutes the minimum. If the value entered is too high, it substitutes the maximum. If a non-numeric value is present in the configuration file, it substitutes the minimum value.

    A value of 0 indicates that the services system file must be used to locate the port number for the CICS service using the TCP protocol.

    Windows operating system:

    The services system file is in the %windir%\system32\drivers\etc directory.

    UNIX and Linux operating systems:

    The services system file is in the /etc directory.

    If no entry can be located in the services system file, a value of 1435 is assumed. This is the port assigned to the Client daemon in the TCP/IP architecture.


    Connection timeout

    Enter a value in the range 0 through 3600, specifying the maximum time in seconds that establishing a connection is allowed to take.

    The default value of 0 means that no limit is set by the Client daemon.

    If you enter a value outside the permitted range, the Configuration Tool warns you. If the value entered is too low, it substitutes the minimum. If the value entered is too high, it substitutes the maximum. If a non-numeric value is present in the configuration file, it substitutes the minimum value.

    A timeout occurs if connection establishment takes longer than the specified time. The TCP/IP socket is closed and the return code passed back to the client application is either ECI_ERR_NO_CICS or CICS_EPI_ERR_FAILED.

    Cleanup processing happens after a timeout only if the server has support for this function installed.


    Send TCP/IP KeepAlive packets

    Select this check box if you want TCP/IP to periodically send keepalive messages to the server to check the connection.

    The CICS Transaction Gateway uses the interval specified by your operating system.


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