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1. 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。

2. 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。

3. 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。

4. 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。

5. 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。

6. 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。

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

US07379454B2 Packet routing apparatus and routing controller 有权
标题翻译：分组路由设备和路由控制器
公开(公告)号：US07379454B2
公开(公告)日：2008-05-27
申请号：US10211513
申请日：2002-08-05
申请人： Nobuo Ogasawara , Kenichi Sakamoto , Shinichi Akahane , Hiroki Yano , Tomohiro Baba
发明人： Nobuo Ogasawara , Kenichi Sakamoto , Shinichi Akahane , Hiroki Yano , Tomohiro Baba
IPC分类号： H04L12/28 , H04J3/16
CPC分类号： H04L45/00 , H04L12/4633 , H04L29/06 , H04L45/54 , H04L69/22
摘要： A packet routing apparatus has a routing information table comprised of a plurality of sub-tables. Each sub-table includes an entry of a first format indicative of routing information, and at least one of the sub-tables includes, in addition to the entry of the first format, an entry of a second format for designating another sub-table to be referred to. A routing processor of the packet routing apparatus refers to a sub-table designated by an input line interface. As a result, when the entry of the second format is retrieved, the routing processor executes routing of an input packet and header conversion by referring to another sub-table designated by the entry.
摘要翻译：分组路由装置具有由多个子表构成的路由信息表。每个子表包括指示路由信息的第一格式的条目，并且除了第一格式的输入之外，至少一个子表还包括用于指定另一子表的第二格式的条目被引用。分组路由装置的路由处理器是指由输入线路接口指定的子表。结果，当检索到第二格式的输入时，路由处理器通过参考由条目指定的另一个子表来执行输入分组的路由和报头转换。

9. 发明授权

US07809859B2 Network switching device and control method of network switching device 有权
标题翻译：网络交换设备和网络交换设备的控制方法
公开(公告)号：US07809859B2
公开(公告)日：2010-10-05
申请号：US11831109
申请日：2007-07-31
申请人： Shinichi Akahane , Mitsuru Nagasaka , Hiroki Yano , Yutaka Takagi
发明人： Shinichi Akahane , Mitsuru Nagasaka , Hiroki Yano , Yutaka Takagi
IPC分类号： G06F15/16
CPC分类号： H04L49/309 , H04L49/101
摘要： A network switching device includes multiple ports, multiple switching processors, and a table manager. The switching processors respectively have an address table, a output port specification module, an update requirement determination module, and a table update module. The output port specification module refers to a destination address in received data and the address table and specifies a output port for sending the data among the multiple ports. The update requirement determination module determines requirement for update of the address table with regard to a source address in the data. The table manager has an update detail acquisition module and an update request module. Upon determination of the requirement for update of the address table, the update detail acquisition module obtains an update detail of the address table from one of the switching processors. The update request module sends an update request to the switching processors, based on the update detail.
摘要翻译：网络交换设备包括多个端口，多个交换处理器和表管理器。交换处理器分别具有地址表，输出端口规范模块，更新需求确定模块和表更新模块。输出端口规范模块是指接收到的数据和地址表中的目的地址，并指定在多个端口之间发送数据的输出端口。更新要求确定模块确定关于数据中的源地址的地址表的更新的要求。表管理器具有更新详细信息获取模块和更新请求模块。在确定更新地址表的要求时，更新细节获取模块从交换处理器之一获取地址表的更新细节。更新请求模块基于更新细节向切换处理器发送更新请求。

10. 发明授权

US08812754B2 Network relay device and memory control method 有权
标题翻译：网络中继设备和内存控制方式
公开(公告)号：US08812754B2
公开(公告)日：2014-08-19
申请号：US12813891
申请日：2010-06-11
申请人： Kentaroh Sugawara , Shinichi Akahane , Hiroki Yano , Yuichi Ishikawa
发明人： Kentaroh Sugawara , Shinichi Akahane , Hiroki Yano , Yuichi Ishikawa
IPC分类号： G06F3/00 , H04L12/28
CPC分类号： H04L49/10
摘要： A network relay device includes a packet buffer for temporarily storing a received packet, and a packet buffer control section for changing an effective buffer number depending on the received amount of packet. When a traffic amount is small, the packet buffer control section reduces the power consumption by stopping the feeding of power or the supply of clock to a part of the packet buffers. The network relay device further includes plural table memories storing a table for deciding the transfer destination of packet, and a table memory control section for changing an effective table number according to a required number of table entries. When the required table entry number is small, the table memory control section reduces the power consumption by stopping the feeding of power or the supply of clock to a part of the table memories.
摘要翻译：网络中继装置包括用于临时存储接收到的分组的分组缓冲器，以及用于根据接收到的分组数量改变有效缓冲器数目的分组缓冲器控制部分。当业务量小时，分组缓冲器控制部分通过停止向一部分分组缓冲器供电或提供时钟来降低功耗。网络中继装置还包括多个表存储器，其存储用于决定分组的传送目的地的表，以及表存储器控制部，用于根据所需的表条目数来更改有效的表号。当所需的表格入口号小时，表存储器控制部分通过停止向台式存储器的一部分供电或提供时钟来降低功耗。

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