US Patent 11669488 Chassis controller

A non-transitory machine readable medium storing a program that configures managed forwarding elements to establish tunnels between the managed forwarding elements is described. From a particular managed forwarding element, the program receives information regarding coupling of a network element to the first managed forwarding element. Upon receiving the information, the program generates a set of universal flow entries for configuring another managed forwarding element to establish a tunnel to the particular managed forwarding element.