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1. 发明授权

US07397765B2 Bandwidth monitoring device 有权
标题翻译：带宽监控设备
公开(公告)号：US07397765B2
公开(公告)日：2008-07-08
申请号：US10769082
申请日：2004-01-30
申请人： Takeshi Aimoto , Nobuhito Matsuyama , Kazuo Sugai , Hiroki Yano , Yoshihiko Sakata , Shinichi Akahane , Yuichi Ishikawa
发明人： Takeshi Aimoto , Nobuhito Matsuyama , Kazuo Sugai , Hiroki Yano , Yoshihiko Sakata , Shinichi Akahane , Yuichi Ishikawa
IPC分类号： H04L1/00
CPC分类号： H04L47/32 , H04L47/10 , H04L47/11 , H04L47/20 , H04L47/2408 , H04L47/283 , H04L47/36
摘要： In one embodiment, a bandwidth monitoring device comprises a packet receiving circuit configured to receive packets; a counter configured to count a total packet length by adding up inputted packet lengths including a packet length of a next input packet and subtracting outputted packet lengths to produce a counted value; a timer configured to time a packet receiving time; a memory configured to store a number of packet receiving times and a number of counted values counted by the counter which correspond to the packet receiving times, respectively; a counter rate-of-change calculating portion configured to calculate a change rate by a first counted value corresponding to an oldest packet receiving time stored in the memory representing an oldest time at which a packet was received and a second counted value corresponding to a latest packet receiving time stored in the memory representing a latest time at which a packet was received; and a determining portion configured to decide whether the next input packet will be discarded based on a probability computed by the change rate and the counted value counted by the counter when the packet receiving circuit receives the next input packet.
摘要翻译：在一个实施例中，带宽监视设备包括被配置为接收分组的分组接收电路; 配置为通过将包括下一个输入分组的分组长度的输入分组长度相加并减去输出的分组长度以产生计数值来计数总分组长度; 定时器，配置为对分组接收时间进行计时; 存储器，被配置为分别存储与所述分组接收时间对应的由所述计数器计数的多个分组接收时间和多个计数值; 计数变化率计算部分，被配置为计算与存储在表示接收到分组的最旧时间的存储器中的最旧的分组接收时间相对应的第一计数值的变化率，以及对应于最新的分组接收时间存储在存储器中，表示接收到分组的最新时间; 以及确定部分，被配置为基于当分组接收电路接收到下一个输入分组时由所述改变率计算的概率和由所述计数器计数的计数值来决定下一个输入分组是否将被丢弃。

2. 发明授权

US06874033B1 Network repeater and network next transfer desitination searching method 有权
标题翻译：网络中继器和网络下一代转移寻找方法
公开(公告)号：US06874033B1
公开(公告)日：2005-03-29
申请号：US09622484
申请日：1998-03-23
申请人： Kazuo Sugai , Takeshi Aimoto , Nobuhito Matsuyama , Shinichi Akahane , Noboru Tanabe , Yoshihito Sako
发明人： Kazuo Sugai , Takeshi Aimoto , Nobuhito Matsuyama , Shinichi Akahane , Noboru Tanabe , Yoshihito Sako
IPC分类号： G06F17/30 , H04L12/66 , H04L12/701 , H04L12/745 , G06F15/173
CPC分类号： H04L45/00 , H04L45/48 , H04L45/742
摘要： The present invention improves a network forwarding device, such as a router, in a computer network system. When an address to which a received packet is to be forwarded is searched for based on path information, a path search data structure is changed to the one in which, in a 2-branch tree search in which a destination address of the received packet is checked, one bit at a time beginning at a highest-order bit, p (p is an integer equal to or larger than 2) levels are combined into one 2P-branch tree to perform a search of the p levels of the 2-branch tree as a one-level search. This data structure speeds up path search processing.
摘要翻译：本发明改进了计算机网络系统中的诸如路由器的网络转发设备。当基于路径信息搜索要转发接收到的分组的地址时，将路径搜索数据结构改变为在其中所接收分组的目的地地址为2的分支树搜索中的路径搜索数据结构检查，一个位从一个最高位开始，p（p是等于或大于2的整数）的级别被组合成一个2 分支树，以执行对p 2分支树作为一级搜索。该数据结构加速了路径搜索处理。

3. 发明授权

US06778532B1 Packet relaying apparatus and high speed multicast system 有权
标题翻译：分组中继设备和高速组播系统
公开(公告)号：US06778532B1
公开(公告)日：2004-08-17
申请号：US09389301
申请日：1999-09-02
申请人： Shinichi Akahane , Kazuo Sugai , Takeshi Aimoto , Nobuhito Matsuyama , Yoshihito Sako , Hiroshi Sekino
发明人： Shinichi Akahane , Kazuo Sugai , Takeshi Aimoto , Nobuhito Matsuyama , Yoshihito Sako , Hiroshi Sekino
IPC分类号： H04J110
CPC分类号： H04L45/742 , H04L12/18 , H04L12/46 , H04L45/00 , H04L45/16
摘要： In a high speed multicast route searching method of searching information of a transmission port to which a received multicast packet is next transferred: a route address is formed by coupling a receiver address and a sender address in this order; one p-th power-of-2-branch tree node is configured by a collection of one two-branch tree node and two-branch tree nodes of p−1 stages totalling ((p-th power of 2)−1) nodes just under the one two-branch tree node to form a p-th power-of-2-branch tree which is stored in a memory; not one bit but consecutive p bits of the route address coupling the receiver address and sender address in a received multicast packet in this order are checked at the same time; and in accordance with the values of the consecutive bits, a search tree stored in the memory is searched. In this manner, a search process can be completed by tracing nodes (the number of bits of a search key divided by p) times at a maximum, independently from the number of entries.
摘要翻译：在高速多播路由搜索方法中，搜索接收到的多播分组的下一个传输的传输端口的信息：通过按照该顺序耦合接收机地址和发送方地址来形成路由地址; 一个p个2分支树状节点由一个两分支树节点和总共（（p-th功率为2）-1）个节点的p-1级的两分支树节点的集合来配置恰好在一个双分支树节点之下，以形成存储在存储器中的第p个2分支树枝; 不是一个位，而是同时检查在接收到的组播数据包中按顺序耦合接收器地址和发送方地址的路由地址的连续p位; 并且根据连续比特的值，搜索存储在存储器中的搜索树。以这种方式，可以独立于条目的数量，通过跟踪节点（搜索关键字的比特数除以p）乘以最大值来完成搜索处理。

4. 发明申请

US20070133531A1 Packet forwarding apparatus and method for multicast packets 失效
标题翻译：分组转发装置和组播报文的方法
公开(公告)号：US20070133531A1
公开(公告)日：2007-06-14
申请号：US11387810
申请日：2006-03-24
申请人： Yasuhiro Kodama , Kazuo Sugai , Shinichi Akahane , Hiroki Yano , Kaoru Okano , Naoya Kumita
发明人： Yasuhiro Kodama , Kazuo Sugai , Shinichi Akahane , Hiroki Yano , Kaoru Okano , Naoya Kumita
IPC分类号： H04L12/56 , H04J3/26
CPC分类号： H04L47/10 , H04L45/16 , H04L45/3065 , H04L47/15 , H04L47/2416 , H04L47/2441
摘要： The present invention provides a technology for processing packets, such as VoIP packets, with priority. A priority-designating unit designates priority information based on header information. A pointer searching unit refers to a pointer table to obtain pointer information corresponding to a destination address. A sorting unit sorts the pointer information into a high-priority queue and a low-priority queue according to the priority information. A next queue holds pointer information obtained from a destination information table. A scheduler extracts and outputs the pointer information from each queue in the following order of priority: the next queue, a high-priority queue, and a low-priority queue. A destination-information-table searching unit obtains destination information and/or the pointer information from the destination information table based on the pointer information, and outputs the destination information to a packet forwarding and duplicating unit and outputs the pointer information to the next queue.
摘要翻译：本发明提供了优先处理诸如VoIP分组之类的分组的技术。优先级指定单元基于头信息指定优先级信息。指针搜索单元参考指针表来获得与目的地地址对应的指针信息。排序单元根据优先级信息将指针信息分类为高优先级队列和低优先级队列。下一个队列保存从目的地信息表获得的指针信息。调度器按照以下优先级顺序从每个队列中提取并输出指针信息：下一个队列，高优先级队列和低优先级队列。目的地信息表搜索单元基于指针信息从目的地信息表获取目的地信息和/或指针信息，并将目的地信息输出到分组转发和复制单元，并将指针信息输出到下一个队列。

5. 发明授权

US07760632B2 Device and method for relaying packets 有权
标题翻译：用于中继数据包的设备和方法
公开(公告)号：US07760632B2
公开(公告)日：2010-07-20
申请号：US11830912
申请日：2007-07-31
申请人： Hiroki Yano , Kazuo Sugai , Shinichi Akahane , Yoshinori Hachiya
发明人： Hiroki Yano , Kazuo Sugai , Shinichi Akahane , Yoshinori Hachiya
IPC分类号： G01R31/08 , H04L12/28
CPC分类号： H04L45/245 , H04L49/3045 , H04L49/354 , Y02D50/30
摘要： Packets are relayed using a network relay device including a plurality of interface units. Each of the interface units includes one or more physical ports for connection to a line, and a bandwidth controller configured to control transmission bandwidth for packets received by the physical ports. Furthermore, a single specific physical port is selected as the output physical port from the distributed-control logical port based on output port group information unique to the output port group including the distributed-control logical port.
摘要翻译：分组使用包括多个接口单元的网络中继设备进行中继。每个接口单元包括用于连接到线路的一个或多个物理端口，以及被配置为控制由物理端口接收的分组的传输带宽的带宽控制器。此外，基于包括分布式控制逻辑端口的输出端口组所特有的输出端口组信息，从分布式控制逻辑端口选择单个特定物理端口作为输出物理端口。

6. 发明授权

US07710962B2 Packet forwarding apparatus and method for multicast packets 失效
标题翻译：分组转发装置和组播报文的方法
公开(公告)号：US07710962B2
公开(公告)日：2010-05-04
申请号：US11387810
申请日：2006-03-24
申请人： Yasuhiro Kodama , Kazuo Sugai , Shinichi Akahane , Hiroki Yano , Kaoru Okano , Naoya Kumita
发明人： Yasuhiro Kodama , Kazuo Sugai , Shinichi Akahane , Hiroki Yano , Kaoru Okano , Naoya Kumita
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L47/10 , H04L45/16 , H04L45/3065 , H04L47/15 , H04L47/2416 , H04L47/2441
摘要： The present invention provides a technology for processing packets, such as VoIP packets, with priority. A priority-designating unit designates priority information based on header information. A pointer searching unit refers to a pointer table to obtain pointer information corresponding to a destination address. A sorting unit sorts the pointer information into a high-priority queue and a low-priority queue according to the priority information. A next queue holds pointer information obtained from a destination information table. A scheduler extracts and outputs the pointer information from each queue in the following order of priority: the next queue, a high-priority queue, and a low-priority queue. A destination-information-table searching unit obtains destination information and/or the pointer information from the destination information table based on the pointer information, and outputs the destination information to a packet forwarding and duplicating unit and outputs the pointer information to the next queue.
摘要翻译：本发明提供了优先处理诸如VoIP分组之类的分组的技术。优先级指定单元基于头信息指定优先级信息。指针搜索单元参考指针表来获得与目的地地址对应的指针信息。排序单元根据优先级信息将指针信息分类为高优先级队列和低优先级队列。下一个队列保存从目的地信息表获得的指针信息。调度器按照以下优先级顺序从每个队列中提取并输出指针信息：下一个队列，高优先级队列和低优先级队列。目的地信息表搜索单元基于指针信息从目的地信息表获取目的地信息和/或指针信息，并将目的地信息输出到分组转发和复制单元，并将指针信息输出到下一个队列。

7. 发明申请

US20080049778A1 DEVICE AND METHOD FOR RELAYING PACKETS 有权
标题翻译：用于中继分组的装置和方法
公开(公告)号：US20080049778A1
公开(公告)日：2008-02-28
申请号：US11830912
申请日：2007-07-31
申请人： Hiroki Yano , Kazuo Sugai , Shinichi Akahane , Yoshinori Hachiya
发明人： Hiroki Yano , Kazuo Sugai , Shinichi Akahane , Yoshinori Hachiya
IPC分类号： H04L12/56
CPC分类号： H04L45/245 , H04L49/3045 , H04L49/354 , Y02D50/30
摘要： Packets are relayed using a network relay device including a plurality of interface units. Each of the interface units includes one or more physical ports for connection to a line, and a bandwidth controller configured to control transmission bandwidth for packets received by the physical ports. Furthermore, a single specific physical port is selected as the output physical port from the distributed-control logical port based on output port group information unique to the output port group including the distributed-control logical port.
摘要翻译：分组使用包括多个接口单元的网络中继设备进行中继。每个接口单元包括用于连接到线路的一个或多个物理端口和被配置为控制由物理端口接收的分组的传输带宽的带宽控制器。此外，基于包括分布式控制逻辑端口的输出端口组所特有的输出端口组信息，从分布式控制逻辑端口选择单个特定物理端口作为输出物理端口。

8. 发明授权

US08625423B2 Device and method for relaying packets 有权
标题翻译：用于中继数据包的设备和方法
公开(公告)号：US08625423B2
公开(公告)日：2014-01-07
申请号：US13169363
申请日：2011-06-27
申请人： Hiroki Yano , Kazuo Sugai , Shinichi Akahane , Takao Nara
发明人： Hiroki Yano , Kazuo Sugai , Shinichi Akahane , Takao Nara
IPC分类号： G01R31/08 , H04L12/28
CPC分类号： H04L45/00 , H04L45/245 , Y02D50/30
摘要： A system having a plurality of network devices, each including: an interface module including a plurality of physical ports to transmit and receive packets; a computing module configured to execute a computing process with a computational expression using seed information, the seed information including at least one of destination information and source information associated with a received packet; a destination search module configured to, based on the result of the computation, select a physical port for transmission of the received packet from a plurality of candidate ports among the plurality of physical ports; and a modifying module configured to modify the computational expression, wherein the plurality of network devices include preceding-stage and subsequent-stage network devices, the subsequent-stage network device being directly coupled to the preceding-stage network device with physical wiring, and wherein the subsequent-stage and preceding-stage network devices are configured to use different expressions in the computing process.
摘要翻译：一种具有多个网络设备的系统，每个系统包括：接口模块，包括多个用于发送和接收分组的物理端口; 计算模块，被配置为使用种子信息执行具有计算表达式的计算处理，所述种子信息包括目的地信息和与所接收的分组相关联的源信息中的至少一个; 目的地搜索模块，被配置为基于所述计算结果，从所述多个物理端口中的多个候选端口中选择用于发送所接收的分组的物理端口; 以及修改模块，被配置为修改所述计算表达式，其中所述多个网络设备包括前级和后级网络设备，所述后级网络设备使用物理布线直接耦合到所述前级网络设备，并且其中后级和前级网络设备被配置为在计算过程中使用不同的表达。

9. 发明申请

US20110255534A1 DEVICE AND METHOD FOR RELAYING PACKETS 有权
标题翻译：用于中继分组的装置和方法
公开(公告)号：US20110255534A1
公开(公告)日：2011-10-20
申请号：US13169363
申请日：2011-06-27
申请人： Hiroki YANO , Kazuo Sugai , Shinichi Akahane , Takao Nara
发明人： Hiroki YANO , Kazuo Sugai , Shinichi Akahane , Takao Nara
IPC分类号： H04L12/56
CPC分类号： H04L45/00 , H04L45/245 , Y02D50/30
摘要： A system having a plurality of network devices, each including: an interface module including a plurality of physical ports to transmit and receive packets; a computing module configured to execute a computing process with a computational expression using seed information, the seed information including at least one of destination information and source information associated with a received packet; a destination search module configured to, based on the result of the computation, select a physical port for transmission of the received packet from a plurality of candidate ports among the plurality of physical ports; and a modifying module configured to modify the computational expression, wherein the plurality of network devices include preceding-stage and subsequent-stage network devices, the subsequent-stage network device being directly coupled to the preceding-stage network device with physical wiring, and wherein the subsequent-stage and preceding-stage network devices are configured to use different expressions in the computing process.
摘要翻译：一种具有多个网络设备的系统，每个系统包括：接口模块，包括多个用于发送和接收分组的物理端口; 计算模块，被配置为使用种子信息执行具有计算表达式的计算处理，所述种子信息包括目的地信息和与所接收的分组相关联的源信息中的至少一个; 目的地搜索模块，被配置为基于所述计算结果，从所述多个物理端口中的多个候选端口中选择用于发送所接收的分组的物理端口; 以及修改模块，被配置为修改所述计算表达式，其中所述多个网络设备包括前级和后级网络设备，所述后级网络设备使用物理布线直接耦合到所述前级网络设备，并且其中后级和前级网络设备被配置为在计算过程中使用不同的表达。

10. 发明授权

US07969880B2 Device and method for relaying packets 有权
标题翻译：用于中继数据包的设备和方法
公开(公告)号：US07969880B2
公开(公告)日：2011-06-28
申请号：US11830903
申请日：2007-07-31
申请人： Hiroki Yano , Kazuo Sugai , Shinichi Akahane , Takao Nara
发明人： Hiroki Yano , Kazuo Sugai , Shinichi Akahane , Takao Nara
IPC分类号： G01R31/08 , H04L12/28
CPC分类号： H04L45/00 , H04L45/245 , Y02D50/30
摘要： Computing process with a computational expression is executed using seed information including at least one of destination information and source information associated with a received packet. It is preferable to select a physical port for transmission of the received packet based on the result of the computation. It is also preferable to select a port group for transmission of the received packet based on the result of the computation. Here, the computational expression is capable of being modified. Meanwhile, the physical port for transmission of the received packet is selected from a plurality of candidate ports among the plurality of physical ports. The port group for transmission of the received packet is selected from among a plurality of port groups including a mutually different candidate port.
摘要翻译：使用包括目的地信息和与接收到的分组相关联的源信息中的至少一个的种子信息来执行具有计算表达式的计算过程。基于计算结果，优选地选择用于发送接收到的分组的物理端口。还优选基于计算结果选择用于发送接收到的分组的端口组。这里，计算表达式能够进行修改。同时，从多个物理端口中的多个候选端口中选择用于发送接收到的分组的物理端口。从包括相互不同的候选端口的多个端口组中选择用于发送所接收的分组的端口组。

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