ROUTER AND METHOD FOR PROCESSING IPV4 PACKET EGREGATING BETWEEN OUTER TRAFFIC AND INNER TRAFFIC THEREOF

摘要

A router and a method for processing an IPv4 packet sectioning an outer traffic and an inner traffic are provided to set all IPv4 addresses in external communication regardless of the IPv4 address in internal communication. A router includes an application processor(300), a plurality of line card processors, a switch fabric(114), and an Ethernet switch(103). The application processor separately has an IPv4 protocol stack for outer communication and an IPv4 protocol stack for inner communication, processes system control by managing an inner control packet, transmitted between processes in the router, through the IPv4 protocol stack for inner communication, and performs routing by managing a data packet, transceived with an external node, through the IPv4 protocol stack for outer communication. The plurality of line card processors receive the data packet from the external node, or transmit the data packet to the external node. The switch fabric switches the data packet between the plurality of line card processors and between the line card processor and the application processor according to control of the application processor. The Ethernet switch switches the control packet between the application processor and the plurality of line card processors.