This attribute identifies the current state of the reroute operation.
The route change goes through different stages during a reroute of a SubnetworkConnection. These stages are a part of this notification.
Possible values are:
- "RerouteStarted" 
- "RerouteCompleted" 
- "RerouteFailed" 
- "RouteActivated", raised when the route is successfully activated (with reference to the route actualState).
- "RouteDeactivated", raised when the route is successfully deactivated (with reference to the route actualState).

Readable by NMS? Yes
Writeable by NMS? No
Invariant? No
