| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce consumption power in a packet transfer apparatus using a CAM (Content Addressable Memory) for a retrieval unit for flow retrieval or route retrieval. <P>SOLUTION: Plural retrieval units are prepared, and a retrieval unit which can reduce power consumption is selected according to the condition of a retrieval key. For example, in general, the retrieval unit including the CAM 400 is used. However, when the condition of the retrieval key is simple as in the case where reference only to TOS (Type of Service) in an interior node of Diffserv is made to determine QoS, the retrieval unit including a dscp-QoS table 903 constituted of an FF (Flip Flop) or an RGF (Register File) is used to reduce the power consumption. A CAM retrieval start determination unit 901 determines which retrieval unit should be used to perform the process in accordance with previously set setting information or a previously set header information item. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
