Route selecting method and router apparatus

摘要

A route selecting method includes performing a route search for obtaining route information from destination information contained in a received packet; attaching the route information obtained by the route search to the received packet; storing the packet having the route information in a buffer; reading the packet stored in the buffer sequentially from the route information attached to the packet; selecting an output route for the packet read from the buffer based on the route information read from the buffer; and outputting the packet via the selected output route.