Patent attributes
Systems and methods for selectively transmitting routing information between separated local area network (LAN) interfaces are disclosed. In exemplary embodiments, a network appliance to update a local routing table with IP subnet, neighbor type, source type, and community identifier of a second network appliance; based at least on the local routing table, receive a customized routing policy and subnet exporting policy that permits the network appliance to export a subset of IP addresses from the local routing table to a permitted community of network appliances, wherein the customized routing policy and subnet exporting policy are configured by a network administrator of the network appliance; match the permitted community of network appliances to a new community identifier of a third network appliance; and export the subset of IP addresses of the local routing table to the third network appliance based on the customized routing policy and subnet exporting policy.