This CmProtSwitchMode object, set at row creation, defines the group's protection switching architecture, such as oneplusone or dualactiverx. It determines how failover behaves for this facility pair and changes how the associated work/protect port objects are interpreted. For example, setting the mode to oneplusone means only one of the working or protect ports carries live traffic at a time, whereas dualactiverx would keep both receiving simultaneously.