公开(公告)号：US20090080424A1

公开(公告)日：2009-03-26

申请号：US12324188

申请日：2008-11-26

申请人： Takeki YAZAKI ,  Takeshi Aimoto

发明人： Takeki YAZAKI ,  Takeshi Aimoto

IPC分类号： H04L12/56

CPC分类号： H04L47/2441 ,  H04L47/10 ,  H04L47/2408 ,  H04L47/2458 ,  H04L47/50 ,  H04L47/522 ,  H04L47/6215 ,  H04L47/6225 ,  H04L47/623 ,  H04L49/90 ,  H04L49/9036 ,  H04L49/9042 ,  H04L2012/5651 ,  H04Q11/0478

摘要： A packet communication system of the present invention has first mode, second mode and third mode to apply to input packets. The first mode is a mode that decides priority of the packet by at least one of the address information and the application information, the second mode is a mode that decides priority of the packet by the DS value, the third mode is a mode that decides rewrite the DS value by at least one of the address information and the application information. A control unit of the packet communication system switches a mode to apply an input packet of the first mode, the second mode and the third mode based on the packet header information of the input packet.

摘要翻译： 本发明的分组通信系统具有应用于输入分组的第一模式，第二模式和第三模式。 第一模式是通过地址信息和应用信息中的至少一个决定分组的优先级的模式，第二模式是以DS值决定分组的优先级的模式，第三模式是决定 通过地址信息和应用信息中的至少一个来重写DS值。 分组通信系统的控制单元基于输入分组的分组报头信息切换应用第一模式，第二模式和第三模式的输入分组的模式。

公开(公告)号：US07408935B2

公开(公告)日：2008-08-05

申请号：US10836228

申请日：2004-05-03

申请人： Takeki Yazaki ,  Takeshi Aimoto ,  Kazuo Sugai ,  Nobuhito Matsuyama

发明人： Takeki Yazaki ,  Takeshi Aimoto ,  Kazuo Sugai ,  Nobuhito Matsuyama

IPC分类号： H04L12/28

CPC分类号： H04L12/46 ,  H04L29/06 ,  H04L45/00 ,  H04L45/54 ,  H04L45/60 ,  H04L45/745 ,  H04L47/50 ,  H04L47/6215 ,  H04L49/205 ,  H04L49/25 ,  H04L49/30 ,  H04L49/3009 ,  H04L49/90 ,  H04L49/901 ,  H04L49/9036 ,  H04L67/327 ,  H04L69/12 ,  H04L2012/5636 ,  H04Q11/0478

摘要： A packet forwarding apparatus provided with a plurality of line interface units, comprises a routing processing unit for referring to a routing table, based on header information of received packet to specify one of output lines to output the received packet, a flow detection unit for referring to an entry table, in which a plurality of entries with flow conditions and control information are registered, to retrieve control information defined by the entry with a flow condition which coincides with that of the header information of the received packet, and a packet forwarding unit for transferring the received packet to one of the line interface units connected to the output line specified by the routing processing unit. The entry table id divided into a plurality of subtables corresponding to the values of flow attributes associated with the received packets and the flow detection unit retrieves the control information from one of said subtables specified by the value of the flow attribute corresponding to the received packet.

摘要翻译： 具有多个线路接口单元的分组转发装置包括：路由处理单元，用于根据接收到的分组的头信息来参考路由表，以指定输出所述接收分组的输出行之一;流量检测单元，用于参考 将具有流量条件和控制信息的多个条目登记到条目表中，以检索由条目定义的控制信息，其中流程条件与接收到的分组的标题信息的流条件一致;以及分组转发单元 用于将接收到的分组传送到连接到由路由处理单元指定的输出线的线路接口单元之一。 入口表id被划分为与接收到的分组相关联的流属性的值对应的多个子表，并且流检测单元从与接收到的分组对应的流属性的值指定的所述子表之一中检索控制信息。

公开(公告)号：US07376085B2

公开(公告)日：2008-05-20

申请号：US10211562

申请日：2002-08-05

申请人： Takeki Yazaki ,  Yasusi Kanada

发明人： Takeki Yazaki ,  Yasusi Kanada

IPC分类号： H04L12/26 ,  H04L12/28 ,  G06F15/173

CPC分类号： H04L47/2433 ,  H04L29/06 ,  H04L41/5022 ,  H04L43/026 ,  H04L43/0894 ,  H04L45/00 ,  H04L45/7453 ,  H04L47/10 ,  H04L47/20 ,  H04L47/2441 ,  H04L69/22

摘要： Every router in a network is provided with flow detecting means that detects a flow from a packet header of a packet so as to perform such packet processings as bandwidth monitoring, priority-based transferring, statistical information collecting with respect to each packet flow. Receiving a packet from a site, an edge router detects the packet flow and writes a flow identifier in the packet. Each flow identifier is uniquely decided in the network. The Internet router performs such packet processings as bandwidth monitoring, priority-based transferring, statistical information collecting with respect to each flow according to the flow identifier. The present invention can thus prevent the network from degradation of transferring performance caused by the flow detecting means of a backbone router.

摘要翻译： 网络中的每个路由器设置有流检测装置，其检测来自分组的分组报头的流，以便执行诸如带宽监控，基于优先级的传送，关于每个分组流的统计信息收集的分组处理。 从站点接收数据包，边缘路由器检测数据包流，并在数据包中写入流标识符。 每个流标识符在网络中唯一确定。 互联网路由器根据流标识符执行带宽监控，基于优先级的传输，相对于每个流的统计信息收集的分组处理。 因此，本发明可以防止网络由骨干路由器的流检测装置引起的传输性能的劣化。

公开(公告)号：US07340529B1

公开(公告)日：2008-03-04

申请号：US09585389

申请日：2000-06-02

申请人： Takeki Yazaki ,  Takeshi Aimoto

发明人： Takeki Yazaki ,  Takeshi Aimoto

IPC分类号： G06F15/16 ,  H04J3/14

CPC分类号： H04L12/5602 ,  H04L2012/5636 ,  H04L2012/5651 ,  H04Q11/0478

摘要： A bandwidth monitoring device for use in a network for transferring priority packets in preference to non priority packets as far as the amount of the priority packets is within a contract bandwidth established between a network user and a network operator, comprising a bandwidth check result decision unit for detecting whether the bandwidth of the priority packets is less than the contract bandwidth, and a DSCP decision unit for determining that a non priority packet may be transferred as a priority packet when the bandwidth of the priority packets is less than the contract bandwidth thereby to sufficiently use the contract bandwidth.

摘要翻译： 一种用于在网络中使用的带宽监视设备，用于优先于非优先级分组传送优先级分组，直到所述优先级分组的数量在网络用户和网络运营商之间建立的合同带宽内，包括带宽检查结果判定单元 用于检测优先级分组的带宽是否小于合同带宽，以及当优先级分组的带宽小于合同带宽时，用于确定非优先级分组可以作为优先分组传送的DSCP决策单元，从而由 充分利用合同带宽。

公开(公告)号：US20080037546A1

公开(公告)日：2008-02-14

申请号：US11898905

申请日：2007-09-17

申请人： Yuichi Ishikawa ,  Takeki Yazaki

发明人： Yuichi Ishikawa ,  Takeki Yazaki

IPC分类号： H04L12/56

CPC分类号： H04L47/2441 ,  H04L47/10 ,  H04L49/90

摘要： A flow classifier having a flow CAM having plural flow entries, a search key generator for generating a search key of a format which differs by a flow condition, and a table holding a flow search result corresponding to an address of respective flow entry of CAM, in which access is made to CAM by the search key of a variable format including at least one header information item extracted from a packet header and the flow search result is obtained from the table in accordance with the address of the flow entry coinciding with the search key outputted from CAM to thereby constitute high speed formation of flow classifying by a variety of flow conditions.

摘要翻译： 一种流分类器，具有多个流条目的流CAM，用于生成不同于流条件的格式的搜索关键字的搜索关键字生成器，以及保存与CAM的各个流入口的地址对应的流搜索结果的表， 其中通过包括从分组报头提取的至少一个报头信息项的可变格式的搜索关键字对CAM进行访问，并且根据与搜索一致的流入口的地址从表中获得流搜索结果 键从CAM输出，从而构成通过各种流动条件分流的高速形成。

公开(公告)号：US20070091911A1

公开(公告)日：2007-04-26

申请号：US11365607

申请日：2006-03-02

申请人： Rinne Watanabe ,  Takeki Yazaki

发明人： Rinne Watanabe ,  Takeki Yazaki

IPC分类号： H04L12/56

CPC分类号： H04L45/00 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50 ,  H04L69/14 ,  H04L69/40 ,  Y02D50/30

摘要： A packet forwarding apparatus is provided which can minimize traffic detoured to a backup path liable to be degraded in communication quality in the event of a link failure to thereby improve the communication quality. To this end, a technique is provided in which an output label decision unit and an output physical port ordinal number search unit which are included in a destination decision unit decide, from a header of an input packet, an output label of the packet, a first logical link to which the packet is to be outputted and a first physical link constituting the first logical link. When a failure takes place in the first physical link, the detour decision unit changes the output label to a backup label and the first physical link to a second physical link constituting a second logical link.

摘要翻译： 提供了一种分组转发装置，其可以在链路故障的情况下最小化在通信质量中易于劣化的备份路径的业务路由，从而提高通信质量。 为此，提供了一种技术，其中包括在目的地决策单元中的输出标签决定单元和输出物理端口序号搜索单元从输入分组的报头中确定分组的输出标签， 要将数据包输出到的第一逻辑链路和构成第一逻辑链路的第一物理链路。 当在第一物理链路中发生故障时，绕道决策单元将输出标签改变为备份标签，并将第一物理链路改变为构成第二逻辑链路的第二物理链路。

公开(公告)号：US07154849B2

公开(公告)日：2006-12-26

申请号：US11334624

申请日：2006-01-19

申请人： Takeki Yazaki ,  Yuichi Ishikawa

发明人： Takeki Yazaki ,  Yuichi Ishikawa

IPC分类号： H04L5/12 ,  H04L5/26 ,  H04L1/00

CPC分类号： H04L47/2408 ,  H04L29/06 ,  H04L45/7453 ,  H04L47/10 ,  H04L47/20 ,  H04L47/2441 ,  H04L47/2483 ,  H04L49/205 ,  H04L49/3009 ,  H04L49/602 ,  H04L69/22

摘要： A packet forwarding apparatus which quickly selects a plurality of control information entries to be applied according to header information of an input packet and concurrently performs various the header processing functions. The packet forwarding apparatus comprises a flow retrieval unit which compares header information of the input packet with plural sets of flow identification conditions and concurrently outputs various flow identifiers appropriate to the input packet, various header processing units corresponding to the flow identifiers, and a packet forwarding control unit for controlling forwarding of input packets according to control information outputted from at least one of the header processing units. While each of the header processing units has an information table containing plural information entries, reads a single information entry from the information table according to the flow identifier outputted from the flow retrieval unit, and executes a prescribed arithmetic operation.

公开(公告)号：US20060176808A1

公开(公告)日：2006-08-10

申请号：US11212678

申请日：2005-08-29

申请人： Takashi Isobe ,  Takeki Yazaki

发明人： Takashi Isobe ,  Takeki Yazaki

IPC分类号： H04J3/22 ,  H04L12/26 ,  H04L1/00 ,  H04J3/16

CPC分类号： H04L47/10 ,  H04L47/11 ,  H04L47/20 ,  H04L47/21 ,  H04L47/2408 ,  H04L47/2441 ,  H04L47/32

摘要： A data transfer apparatus is provided for monitoring the bandwidth of a first and a second flow, comprises flow detecting means for comparing information in a header field of a packet with the first and second detection conditions to detect a flow to which the packet belongs, compliance/violation determining means for measuring the bandwidth of the packet belonging to the detected flow to determine whether the packet complies with or violates a traffic condition which is set corresponding to each flow detection condition, and packet processing determining means for determining processing for a packet which satisfies both the first and second flow conditions based on the compliance/violation determination results corresponding to both traffic conditions, and determining processing for a packet which satisfies one of the first and second flow conditions based on the compliance/violation result corresponding to the flow detection condition satisfied by the packet.

公开(公告)号：US20060114924A1

公开(公告)日：2006-06-01

申请号：US11334624

申请日：2006-01-19

申请人： Takeki Yazaki ,  Yuichi Ishikawa

发明人： Takeki Yazaki ,  Yuichi Ishikawa

IPC分类号： H04L12/54

CPC分类号： H04L47/2408 ,  H04L29/06 ,  H04L45/7453 ,  H04L47/10 ,  H04L47/20 ,  H04L47/2441 ,  H04L47/2483 ,  H04L49/205 ,  H04L49/3009 ,  H04L49/602 ,  H04L69/22

摘要： A packet forwarding apparatus which quickly selects a plurality of control information entries to be applied according to header information of an input packet and concurrently performs various the header processing functions. The packet forwarding apparatus comprises a flow retrieval unit which compares header information of the input packet with plural sets of flow identification conditions and concurrently outputs various flow identifiers appropriate to the input packet, various header processing units corresponding to the flow identifiers, and a packet forwarding control unit for controlling forwarding of input packets according to control information outputted from at least one of the header processing units. While each of the header processing units has an information table containing plural information entries, reads a single information entry from the information table according to the flow identifier outputted from the flow retrieval unit, and executes a prescribed arithmetic operation.

公开(公告)号：US20060077915A1

公开(公告)日：2006-04-13

申请号：US11020484

申请日：2004-12-27

申请人： Masayuki Takase ,  Minoru Hidaka ,  Takeki Yazaki ,  Tomoyuki Oku

发明人： Masayuki Takase ,  Minoru Hidaka ,  Takeki Yazaki ,  Tomoyuki Oku

IPC分类号： H04L5/22

CPC分类号： H04L47/10 ,  H04L47/20 ,  H04L47/21

摘要： To control a bandwidth without the need for a large-capacity buffer. This invention provides a packet transfer apparatus connected to first device and second device, with a network therebetween, including: an input unit that receives a packet from the first device; a packet storage unit that stores the packet; a packet processing unit that stores the packet in the packet storage unit; a packet checking unit that checks whether the packet is related to data request; a packet analyzing unit that analyzes the amount of data requested by the data request; a transfer control unit that controls transfer of the packet on the basis of the analyzed amount of data; and an output unit that sends the received packet to the second device.

摘要翻译： 控制带宽，无需大容量缓冲区。 本发明提供了一种连接到第一设备和第二设备的分组传送设备，其间具有网络，包括：输入单元，其从第一设备接收分组; 存储分组的分组存储单元; 分组处理单元，其将分组存储在分组存储单元中; 分组检查单元，检查分组是否与数据请求相关; 分组分析单元，其分析由所述数据请求请求的数据量; 传送控制单元，其基于分析的数据量来控制分组的传送; 以及将接收到的分组发送到第二设备的输出单元。