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41. 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。

42. 发明申请

US20080025207A1 Switch and network fault recovery method 有权
标题翻译：交换机和网络故障恢复方法
公开(公告)号：US20080025207A1
公开(公告)日：2008-01-31
申请号：US11703074
申请日：2007-02-07
申请人： Shinichi Akahane , Takahisa Miyamoto
发明人： Shinichi Akahane , Takahisa Miyamoto
IPC分类号： H04L12/26
CPC分类号： H04Q3/0079 , H04L12/1868
摘要： A first switch flashes an FDB upon receiving an FDB flash frame and then floods a multicast group join query message (QRY1). A terminal sends a group join message (RP1) back to the first switch. A second switch, a third switch and the first switch receive RP1 and perform IGMP/MLD snooping, respectively.
摘要翻译：第一个交换机在接收到FDB闪存帧时闪烁FDB，然后泛洪组播组加入查询消息（QRY 1）。终端将组合加入消息（RP 1）发送回第一个交换机。第二交换机，第三交换机和第一交换机分别接收RP 1并执行IGMP / MLD监听。

43. 发明申请

US20050276230A1 Communication statistic information collection apparatus 有权
标题翻译：通信统计信息采集装置
公开(公告)号：US20050276230A1
公开(公告)日：2005-12-15
申请号：US11049128
申请日：2005-02-03
申请人： Shinichi Akahane , Mitsuru Nagasaka , Kazuo Sugai , Yuichi Ishikawa
发明人： Shinichi Akahane , Mitsuru Nagasaka , Kazuo Sugai , Yuichi Ishikawa
IPC分类号： H04L12/70 , H04L12/26 , H04L12/56
CPC分类号： H04L43/00 , H04L43/0894 , H04L45/60
摘要： A communication statistic information collection apparatus comprises a unit for searching a flow table for a flow entry corresponding to a searching key, a unit for collecting statistics information for each of flows, a unit for generating a packet for notifying a collector apparatus of stored statistics information, a unit for updating the flow table in accordance with statistics control information shown by a statistics control entry found as a result of searching the flow table, and a unit for generating a sample packet to be transferred to the collect or apparatus at a specified sampling rate in accordance with the statistics control information shown by a specified entry found from the flow table.
摘要翻译：通信统计信息收集装置包括：用于搜索流表的单元，用于搜索与搜索关键字对应的流入条目;收集每个流的统计信息的单元;生成用于通知收集装置的分组的单元存储的统计信息的单元，用于根据由作为搜索流程表的结果找到的统计控制条目所示的统计控制信息来更新流程表的单元，以及用于产生要以特定采样传送到收集器或装置的样本分组的单元根据从流表中找到的指定条目显示的统计控制信息的速率。

44. 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。

45. 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。

46. 发明授权

US09009342B2 Network relay apparatus 有权
标题翻译：网络中继装置
公开(公告)号：US09009342B2
公开(公告)日：2015-04-14
申请号：US13587039
申请日：2012-08-16
申请人： Yoshihiro Nakao , Shinichi Akahane , Masayuki Shinohara , Atsushi Serizawa
发明人： Yoshihiro Nakao , Shinichi Akahane , Masayuki Shinohara , Atsushi Serizawa
IPC分类号： G06F15/16 , H04L12/10 , H04L12/701 , H04L12/713 , H04L12/801 , H04L12/803 , H04L12/933
CPC分类号： H04L12/10 , H04L45/00 , H04L45/586 , H04L47/10 , H04L47/125 , H04L49/1553
摘要： A network relay apparatus which conducts data transfer by using a plurality of network LSIs includes a transfer engine unit having at least two network LSIs and a central control unit which controls the operation state of the network relay apparatus. The transfer engine unit includes the network LSIs capable of changing over at least one of a clock and an operation which differ every function block, a load judgment unit for judging a load laid upon each of function blocks in the network LSI, and a frequency voltage control unit for individually changing over at least one of the clock and operation voltage supplied to each function block on the basis of the load judged by the load judgment unit.
摘要翻译：通过使用多个网络LSI进行数据传送的网络中继装置包括：具有至少两个网络LSI的传送引擎单元和控制网络中继装置的动作状态的中央控制单元。传送引擎单元包括能够切换每个功能块不同的时钟和操作中的至少一个的网络LSI，用于判断布置在网络LSI中的每个功能块上的负载的负载判断单元和频率电压控制单元，用于基于由负载判断单元判断的负载单独地改变提供给每个功能块的时钟和操作电压中的至少一个。

47. 发明授权

US08483051B2 Network relay apparatus 有权
标题翻译：网络中继装置
公开(公告)号：US08483051B2
公开(公告)日：2013-07-09
申请号：US12825863
申请日：2010-06-29
申请人： Shinichi Akahane , Yasuhiro Kodama , Takao Nara
发明人： Shinichi Akahane , Yasuhiro Kodama , Takao Nara
IPC分类号： G01R31/08
CPC分类号： H04L12/4641 , H04L12/437 , H04L49/201 , H04L49/3009 , H04L49/354
摘要： The network relay apparatus is provided. The network relay apparatus includes: multiple ports, each being provided to send and receive a frame to and from one of multiple external devices; and a frame processor configured to perform flooding, in order to relay a received frame that is received via one of the multiple ports as a receiving port, with a preset flooding target according to an attribute of a transmit port that sends the received frame.
摘要翻译：提供网络中继装置。网络中继装置包括：多个端口，每个端口被提供用于向多个外部设备之一发送和接收帧; 以及帧处理器，被配置为执行洪泛，以便根据发送接收到的帧的发送端口的属性，将经由多个端口中的一个接收的接收帧作为接收端口中继预设的洪泛目标。

48. 发明授权

US08422493B2 Network relay device and network relay method 有权
标题翻译：网络中继设备和网络中继方式
公开(公告)号：US08422493B2
公开(公告)日：2013-04-16
申请号：US12475853
申请日：2009-06-01
申请人： Tomohiko Kono , Shinichi Akahane , Takao Nara
发明人： Tomohiko Kono , Shinichi Akahane , Takao Nara
IPC分类号： H04L12/56
CPC分类号： H04L12/4641 , H04L29/12028 , H04L29/12226 , H04L29/12839 , H04L29/12924 , H04L45/66 , H04L49/354 , H04L61/103 , H04L61/2015 , H04L61/6022 , H04L61/6063
摘要： A network relay device for relaying communication for a regular terminal via a port includes an acquiring module, a regular terminal information storing module, and a determination process module. The acquiring module acquires a regular layer 2 address, a regular layer 3 address, regular VLAN information representing a VLAN assigned to the regular terminal, and regular port information representing a port to which the regular terminal is connected. The regular terminal information storing module stores regular terminal information representing a combination of the acquired regular layer 2 address, the regular layer 3 address, the regular VLAN information, and the regular port information. The determination process module determines whether the combination of source layer 2 address, source layer 3 address, assigned VLAN, and reception port of target frame data received via the port is stored as the regular terminal information.
摘要翻译：用于经由端口中继正常终端的通信的网络中继装置包括获取模块，常规终端信息存储模块和确定处理模块。采集模块获取规则层2地址，正常层3地址，表示分配给普通终端的VLAN的常规VLAN信息，以及表示正常终端连接的端口的常规端口信息。常规终端信息存储模块存储表示所获取的规则层2地址，规则层3地址，常规VLAN信息和常规端口信息的组合的常规终端信息。确定处理模块确定是否存储经由端口接收的目标帧数据的源层2地址，源层3地址，分配的VLAN和接收端口的组合作为常规终端信息。

49. 发明授权

US08259714B2 Packet transferring node 有权
标题翻译：分组传送节点
公开(公告)号：US08259714B2
公开(公告)日：2012-09-04
申请号：US11710396
申请日：2007-02-26
申请人： Masaki Yamada , Mitsuru Nagasaka , Takayuki Muranaka , Yoshihiro Nakao , Shinichi Akahane
发明人： Masaki Yamada , Mitsuru Nagasaka , Takayuki Muranaka , Yoshihiro Nakao , Shinichi Akahane
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L45/28 , H04L45/02 , H04L45/44
摘要： In the case of a “distributed” integrated network node (architecture), a specific judgment process cannot be executed in any routing and transferring unit. The routing and transferring unit has been required to share such judgment process related information with an enhanced processing unit or with other routing and transferring units. Thus the manufacturing cost has increased when using an enhanced processing unit and the processing speed has been lowered unavoidably when cooperation is required among routing and transferring units. Those have been conventional problems. Furthermore, if any flow is disposed during a transfer from a packet transferring unit provided in a routing and transferring unit to a processing unit, the packet is disposed regardless of the packet priority. This has also been another conventional problem. According to the present invention, however, it is ruled that a packet related to a specific judgment process is always transmitted to a specific routing and transferring unit from a line interface unit. And if a flow is inputted and it is over the transferring capacity between a line interface unit and a routing and transferring unit, the line interface unit analyzes the packet header and determines the type, transport priority, and disposal priority of the packet.
摘要翻译：在“分布式”集成网络节点（架构）的情况下，不能在任何路由和传送单元中执行特定的判断过程。路由和传送单元已经被要求与增强处理单元或其他路由和传送单元共享这样的判断过程相关信息。因此，当使用增强处理单元时，制造成本增加，并且在路由和传送单元之间需要协作时，不可避免地降低了处理速度。那些是常规问题。此外，如果在从设置在路由和传送单元中的分组传送单元传送到处理单元的传送期间设置任何流程，则分组被布置，而不管分组优先级如何。这也是另一个常规问题。然而，根据本发明，规定与特定判断处理相关的分组总是从线路接口单元发送到特定的路由和传送单元。并且如果输入流，并且在线路接口单元和路由和传送单元之间的传输容量之上，则线路接口单元分析分组报头并确定分组的类型，传输优先级和处置优先级。

50. 发明授权

US08040889B2 Packet forwarding device 有权
标题翻译：分组转发设备
公开(公告)号：US08040889B2
公开(公告)日：2011-10-18
申请号：US12222153
申请日：2008-08-04
申请人： Takeki Yazaki , Mitsuru Nagasaka , Shinichi Akahane
发明人： Takeki Yazaki , Mitsuru Nagasaka , Shinichi Akahane
IPC分类号： H04L12/28
CPC分类号： H04L45/00 , H04L45/60 , H04L49/101 , H04L49/254 , H04L49/3009 , H04L49/351 , H04L49/602
摘要： A power-saving packet forwarding device realizing electric power that accords to the number of lines in which communication is performed and a traffic volume inputted from the lines. A header processing unit with which the packet forwarding device is equipped has a plurality of packet processing circuits for performing a packet processing. A line number decision circuit monitors the number of lines in which communication is performed and a traffic volume inputted from the line, and decides presence or absence of an operation of a packet processing circuit. Based on this decision result, a power supply and a clock of the packet processing circuit that does not need to operate are interrupted, and accordingly power saving of the packet forwarding device is realized.
摘要翻译：实现符合进行通信的线路数和从线路输入的话务量的电力的省电分组转发装置。配备有分组转发设备的报头处理单元具有用于执行分组处理的多个分组处理电路。行号决定电路监视进行通信的线路数和从线路输入的话务量，决定分组处理电路的动作的有无。基于该决定结果，不需要操作的分组处理电路的电源和时钟被中断，从而实现了分组转发装置的省电。

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