| 摘要 |
<p>PROBLEM TO BE SOLVED: To speedily execute the retrieval of entry having the comparing condition of variable length of each entry by storing mask data designating a coinciding range and comparing object data in a retrieving memory with a mask capable of designating by each entry and obtaining information corresponding to a group coinciding with a retrieving condition so as to narrow the entry of a retrieving object to data within the object group. SOLUTION: A reception I/F part 20 receives a packet from a network NET. A destination IP address extracting part 21 extracts destination IP address information to transfer to a routing table retrieving part 22, The part 22 stores route information and investigates route information corresponding to the destination address of a repeating packet to obtain a pertinent destination interface and the destination MAC address of the physical address of a transmission destination, to be given by the destination interface. In addition, a destination MAC address updating part 23 gives an MAC address corresponding to a destination to the packet from the part 21.</p> |
