Advanced Topics › Command Processing › How Linkages Types are Defined

How Linkages Types are Defined

The linkage type defines how CA MIC selects a target console on the target system. CA MIC selects a target console on each system to which a cross-system command is issued. You can choose how it selects target consoles for a linkage using one of the following methods:

• Tell CA MIC to select a console from the pool of target consoles available on the target system. The consoles in the pool are shared by all external command sources you identify on LINK commands. To do this, define a shared linkage.
• Tell CA MIC to select a console from the pool of target consoles available on the target system. Once selected, the target console is removed from the pool and dedicated to the external command source. To do this, define a dedicated linkage.
• Specify the console name of a specific target console that you want to assign to a command source. To do this, define an exclusive linkage.

The method you use depends upon factors such as the availability of target consoles, operating system level, and the number of command sources. Use the POOL or TGTCONS parameters on the LINK command to define the type and allocation method to be used with the target console pool. The following sections describe the advantages and disadvantages of each type of linkage and tell you how to create each linkage.

Note: We recommend you use SHARED type linkages whenever possible.