DATA TRANSMISSION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a data transmission system including an IP network where an IP host directly selects a default router so as to enhance load balance thereby enhancing the availability of the system. SOLUTION: In the data transmission system, packetized data from an IP host 10 having an least an IP layer 34 a network layer are transmitted to a plurality of work stations 12, 14 through a medium that is an IP network 16. The IP host is connected to the IP network via a layer 2 network 18 interfacing the IP network by a set of routers 20, 22, 24. The IP host has a multiple address resolution protocol(MARP) layer 36 between the IP layer and the network layer, and the MARP layer selects any of the routers in response to a succeeding hop IP address fed to the MARP layer with the IP layer when a data packet is transmitted to any of the work stations from the IP host.