CTCA and FCTC DRIVER Statements

The CTCA DRIVER statement defines the operating characteristics of the standard channel-to-channel line driver (CTCA) for the Entire Net-Work Communicator, while the FCTC DRIVER statement defines the operating characteristics of the fast channel-to-channel driver (FCTC). The DRIVER statement must follow an Entire Net-Work NODE statement, but can be preceded by non-CTCA and non-FCTC DRIVER and related LINK statements. Only one CTCA DRIVER statement can be specified for a node; likewise, only one FCTC DRIVER statement can be specified for a node. However, both a CTCA DRIVER and an FCTC DRIVER statement can be specified for the same node.

DRIVER Statement Format

The CTCA and FCTC DRIVER statements have the following format:

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For more information about syntax conventions and rules used in this section, read Conventions.

DRIVER Statement Parameters

This section describes all of the parameters that can be used for a CTCA or FCTC DRIVER statement.

For more information about syntax conventions and rules used in this section, read Conventions.

COMPAT Parameter

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This parameter applies only to the FCTC line driver; it cannot be used with the CTCA line driver.

Use this parameter to activate FCTC line driver compatibility mode, allowing version 6.3 nodes to make FCTC connections to nodes running prior versions. For details about FCTC line driver compatibility, read FCTC Line Driver Compatibility.

Valid values for this parameter are "Y" (activate compatibility) or "N" (deactivate compatibility). The default is "Y".

Note:
If FCTC line driver compatibility has been activated, Entire Net-Work must not be started with REUSASID=YES.

IORETRY Parameter

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This parameter applies to both the FCTC and CTCA line drivers.

Use this parameter to specify the number of times the driver will retry an I/O operation that it decides can be retried. The valid range is 0-15. The default value is 3.

TRACE Parameter

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This parameter applies to both the FCTC and CTCA line drivers.

Use this parameter to indicate whether tracing for this line driver should be active (Y) or not (N). When tracing is activated, trace information is placed in the trace table. The default is N (no). The TRACE parameter can be modified when the line driver is open or closed.

This is equivalent to specifying TRACE=linedriver-code or TRON=linedriver-code in the NODE statement (for example, TRACE=CTCA).