persistRoutes
Specifies whether to persist routes after all BGP sessions are terminated.
enable: Routes will be persisted in FIB and RIB after all BGP sessions are terminated.
disable: Routes will not be persisted in FIB and RIB after all BGP sessions are terminated.
reset: If a route server has persisted routes due to all BGP sessions having ended, reset will withdraw all routes and reset route server to an empty FIB and RIB.