The same dynamic VIPA can exist on more than one stack in the sysplex, playing different roles on the different stacks. The TCP/IP stacks collaborate to prevent conflicting definitions. For example, at any given time only one stack will advertise a given dynamic VIPA to the routers.
Potentially conflicting dynamic VIPA definitions can arise during profile processing or as the result of changes within the sysplex due to a stack or application failure or as the result of movement of workload to a different stack. The following scenarios are examples of dynamic VIPA conflict resolution handled automatically by the TCP/IP stacks. For a summary of dynamic VIPA conflict identification and resolution, see Dynamic VIPA creation results.