| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a router capable of transmitting, for example, even mission critical traffic by setting a plurality of output destinations with respect to one input index and making it possible to transmit a packet to an output destination at which a failure does not occur, and a method for deciding an output destination of the router. SOLUTION: This router is provided with a map table in which priority use orders of output interface parts and/or virtual lines are described for one input index, and a failure bit table in which the existence/absence of a failure of each of the output interfaces and/or the virtual lines is described, and has a failure information managing part for detecting the existence/absence of a failure in each of the output interfaces and/or virtual lines and updating the failure bit table, and an output information retrieving part for referring to the failure bit table and map table to select as an output destination an output interface and/or a virtual line with the highest priority use order among output interfaces and/or virtual lines wherein a failure does not occur.</p> |
