Static RT-Constrain route based on community or wildcard

When the Route Target Constrain (RT-Constrain) feature is partially deployed in a network, the resource saving benefit is lost. We have extended the static RT-Constrain feature to generate host static RT-Constrain entries from fully qualified route targets configured in the routing policy. You can assign BGP communities or a wildcard route target on the static RT-Constrain route. You can also configure the static RT-Constrain route's origin AS in the network layer reachability information (NLRI) while retaining the global AS number.