Systems and method for propagating route information

A system for installing routes, the system comprising:

• network circuitry of a first network device configured to:
• receive a virtual private network (VPN) route from a controller, wherein the route specifies:
• (1) a route target, (2) a next hop for the route, and (3) a Multiprotocol Label Switching (MPLS) label, wherein the first network device does not comprise any MPLS tunnel definitions in a default virtual routing and forwarding (VRF) instance;
• and
• control circuitry of the first network device is configured to:
• determine that the first network device is configured to skip a VPN next hop verification in the default VRF instance;
• and
• in response to the determining that the first network device is configured to skip the VPN next hop verification in the default VRF:
• identify a VRF instance that comprises an import route target that matches the route target of the received VPN route;
• resolve the next hop of the route using a unicast routing information base (RIB) of the identified VRF instance;
• and
• in response to the resolving, install the route in the identified VRF instance.

One or more non-transitory computer-readable media storing computer-executable instructions that, when executed by a processor, perform a method of installing routes, the method comprising:

• receiving, by a first network device, a virtual private network (VPN) route from a controller, wherein the route specifies:
• (1) a route target, (2) a next hop for the route, and (3) a Multiprotocol Label Switching (MPLS) label, wherein the first network device does not comprise any MPLS tunnel definitions in a default virtual routing and forwarding (VRF) instance;
• determining that the first network device is configured to skip a VPN next hop verification in the default VRF instance;
• and
• in response to the determining that the first network device is configured to skip the VPN next hop verification in the default VRF:
• identifying a VRF instance that comprises an import route target that matches the route target of the received VPN route;
• resolving the next hop of the route using a unicast routing information base (RIB) of the identified VRF instance;
• and
• in response to the resolving, installing the route in the identified VRF instance.