RETRIEVAL TABLE HIGH SPEED SWITCHING SYSTEM AND PACKET TRANSFER DEVICE

PROBLEM TO BE SOLVED: To switch a line of an output destination to a line for a by-pass at high speed and to switch output header information of a packet to header information for detouring when a fault occurs in a line which a router in IP and MPLS networks stores. SOLUTION: A packet transfer device storing the two output lines is provided with a means storing output information at every input header information, a means storing output information of the output line which is to be the by-pass at the time of the fault, which is made to correspond to input header information, and an output information address rewriting processing part writing an address of output information that is made to correspond to the output line which is to be the by-pass at the time of the fault in the output line. COPYRIGHT: (C)2006,JPO&NCIPI