This read-create RowStatus object creates, modifies, and deletes a preferred route entry, supporting only the values active, createAndGo, and destroy; the managed system sets it to active for each valid entry, and a management station sets it to destroy to remove an entry or createAndGo to add a new one. An admin defining a new preferred route for a critical PVC would set this to createAndGo when submitting the route's other parameters. An admin retiring an obsolete preferred route would set this object to destroy to remove it from the routing table.