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1. 发明授权

US06671277B1 Network relaying apparatus and network relaying method capable of high quality transfer of packets under stable service quality control 有权
标题翻译：网络中继设备和网络中继方式，能够在稳定的业务质量控制下实现高质量的数据包传输
公开(公告)号：US06671277B1
公开(公告)日：2003-12-30
申请号：US09511797
申请日：2000-02-23
申请人： Kazuo Sugai , Takeshi Aimoto , Takeki Yazaki , Nobuhito Matsuyama , Yoshihito Sako , Tomohiko Tanabe
发明人： Kazuo Sugai , Takeshi Aimoto , Takeki Yazaki , Nobuhito Matsuyama , Yoshihito Sako , Tomohiko Tanabe
IPC分类号： H04L1256
CPC分类号： H04L45/00 , H04L45/583 , H04L45/60 , H04L49/205 , H04L49/254 , H04L49/30 , H04L49/3009 , H04L49/3063 , H04L49/309 , H04L2012/5618
摘要： A network relaying apparatus and method for high quality transfer of packets under stable quality-of-service (QoS) control. A transfer engine stores the packets received through a network interface, in a packet buffer, and the header information in a RAM. A search engine searches the transfer control information including the transfer destination information and the action information according to the header information and writes the resulting information in the header RAM. The transfer engine produces an output packet based on the information stored in the packet buffer and the header RAM and outputs it to the transfer destination. A switch operates to switch the output packet to the routing processor of the destination. The QoS control is performed at each of a plurality of points including the input-side routing processor, the output-side routing processor 10 and the switch.
摘要翻译：一种用于在稳定的服务质量（QoS）控制下高质量传输数据包的网络中继设备和方法。传输引擎将通过网络接口接收的分组存储在分组缓冲器中，并将报头信息存储在RAM中。搜索引擎根据头信息搜索包括传送目的地信息和动作信息的传送控制信息，并将得到的信息写入标题RAM。传输引擎基于存储在分组缓冲器和头部RAM中的信息产生输出分组，并将其输出到传送目的地。交换机用于将输出分组切换到目的地的路由处理器。在包括输入侧路由处理器，输出侧路由处理器10和交换机的多个点的每一个处执行QoS控制。

2. 发明授权

US07167474B2 Network relaying apparatus and network relaying method capable of high-speed routing and packet transfer 有权
标题翻译：网络中继设备和网络中继方式能够进行高速路由和分组传输
公开(公告)号：US07167474B2
公开(公告)日：2007-01-23
申请号：US10693941
申请日：2003-10-28
申请人： Kazuo Sugai , Takeshi Aimoto , Takeki Yazaki , Nobuhito Matsuyama , Yoshihito Sako , Tomohiko Tanabe
发明人： Kazuo Sugai , Takeshi Aimoto , Takeki Yazaki , Nobuhito Matsuyama , Yoshihito Sako , Tomohiko Tanabe
IPC分类号： H04L12/28
CPC分类号： H04L45/00 , H04L45/583 , H04L45/60 , H04L49/205 , H04L49/254 , H04L49/30 , H04L49/3009 , H04L49/3063 , H04L49/309 , H04L2012/5618
摘要： A network relaying apparatus and method for routing and transferring packets at high speed. A transfer engine stores the packets received through a network interface in a packet buffer, and stores the header information in a header RAM. A search engine searches the transfer control information including the transfer destination information and the action information in accordance with the header information, and writes it in the header RAM. The transfer engine produces an output packet based on the information stored in the packet buffer and the header RAM and outputs it to the transfer destination. A switch switches the output packet to the routing process of the destination. The transfer engine executes the receiving process and the transmission process, and the search engine executes the input search process and the output search process. Each of these processes is executed by pipelining control using a required table independently.
摘要翻译：一种用于高速路由和传送分组的网络中继设备和方法。传输引擎将通过网络接口接收的分组存储在分组缓冲器中，并将头部信息存储在头部RAM中。搜索引擎根据头信息搜索包括传送目的地信息和动作信息的传送控制信息，并将其写入标题RAM。传输引擎基于存储在分组缓冲器和头部RAM中的信息产生输出分组，并将其输出到传送目的地。交换机将输出分组切换到目的地的路由进程。传送引擎执行接收处理和发送处理，搜索引擎执行输入搜索处理和输出搜索处理。这些处理中的每一个通过独立地使用所需表的流水线控制来执行。

3. 发明授权

US06650642B1 Network relaying apparatus and network relaying method capable of high-speed routing and packet transfer 有权
标题翻译：网络中继设备和网络中继方式能够进行高速路由和分组传输
公开(公告)号：US06650642B1
公开(公告)日：2003-11-18
申请号：US09511799
申请日：2000-02-23
申请人： Kazuo Sugai , Takeshi Aimoto , Takeki Yazaki , Nobuhito Matsuyama , Yoshihito Sako , Tomohiko Tanabe
发明人： Kazuo Sugai , Takeshi Aimoto , Takeki Yazaki , Nobuhito Matsuyama , Yoshihito Sako , Tomohiko Tanabe
IPC分类号： H04L1228
CPC分类号： H04L45/00 , H04L45/583 , H04L45/60 , H04L49/205 , H04L49/254 , H04L49/30 , H04L49/3009 , H04L49/3063 , H04L49/309 , H04L2012/5618
摘要： A network relaying apparatus and method for routing and transferring packets at high speed. A transfer engine stores the packets received through a network interface in a packet buffer, and stores the header information in a header RAM. A search engine searches the transfer control information including the transfer destination information and the action information in accordance with the header information, and writes it in the header RAM. The transfer engine produces an output packet based on the information stored in the packet buffer and the header RAM and outputs it to the transfer destination. A switch switches the output packet to the routing process of the destination. The transfer engine executes the receiving process and the transmission process, and the search engine executes the input search process and the output search process. Each of these processes is executed by pipelining control using a required table independently.
摘要翻译：一种用于高速路由和传送分组的网络中继设备和方法。传输引擎将通过网络接口接收的分组存储在分组缓冲器中，并将头部信息存储在头部RAM中。搜索引擎根据头信息搜索包括传送目的地信息和动作信息的传送控制信息，并将其写入标题RAM。传输引擎基于存储在分组缓冲器和头部RAM中的信息产生输出分组，并将其输出到传送目的地。交换机将输出分组切换到目的地的路由进程。传送引擎执行接收处理和发送处理，搜索引擎执行输入搜索处理和输出搜索处理。这些处理中的每一个通过独立地使用所需表的流水线控制来执行。

4. 发明授权

US06658003B1 Network relaying apparatus and network relaying method capable of high-speed flow detection 有权
标题翻译：网络中继设备和网络中继方式能够进行高速流量检测
公开(公告)号：US06658003B1
公开(公告)日：2003-12-02
申请号：US09511801
申请日：2000-02-23
申请人： Kazuo Sugai , Takeshi Aimoto , Takeki Yazaki , Nobuhito Matsuyama , Yoshihito Sako , Tomohiko Tanabe
发明人： Kazuo Sugai , Takeshi Aimoto , Takeki Yazaki , Nobuhito Matsuyama , Yoshihito Sako , Tomohiko Tanabe
IPC分类号： H04L1228
CPC分类号： H04L45/00 , H04L45/583 , H04L45/60 , H04L49/205 , H04L49/254 , H04L49/30 , H04L49/3009 , H04L49/3063 , H04L49/309 , H04L2012/5618
摘要： A network relaying apparatus and method for detecting a flow at high speed and performing a variety of control operations including quality-of-service (QoS) control and filtering at high speed. A transfer engine stores the packet received through a network interface, in a packet buffer, and stores the header information in a header RAM. A search engine searches the transfer control information including the transfer destination information and the action information according to the header information, and writes it in the header RAM. The transfer engine produces an output packet based on the information stored in the packet buffer and the header RAM and outputs it to the transfer destination. A switch operates to switch the output packet to the routing processor of the final destination. A flow search table separates the action including the QoS corresponding to the packet source information and the transfer destination information by the input port number and searches for only an entry with a coincident input port number.
摘要翻译：一种用于高速检测流量并执行包括服务质量（QoS）控制和高速过滤的各种控制操作的网络中继装置和方法。传输引擎将通过网络接口接收的分组存储在分组缓冲器中，并将报头信息存储在报头RAM中。搜索引擎根据头信息搜索包括传送目的地信息和动作信息的传送控制信息，并将其写入标题RAM。传输引擎基于存储在分组缓冲器和头部RAM中的信息产生输出分组，并将其输出到传送目的地。交换机操作以将输出分组切换到最终目的地的路由处理器。流搜索表通过输入端口号分离包括与分组源信息和传送目的地信息相对应的QoS的动作，并仅搜索具有一致输入端口号的条目。

5. 发明授权

US06683885B1 Network relaying apparatus and network relaying method 有权
标题翻译：网络中继设备和网络中继方法
公开(公告)号：US06683885B1
公开(公告)日：2004-01-27
申请号：US09511798
申请日：2000-02-23
申请人： Kazuo Sugai , Takeshi Aimoto , Takeki Yazaki , Nobuhito Matsuyama , Yoshihito Sako , Tomohiko Tanabe
发明人： Kazuo Sugai , Takeshi Aimoto , Takeki Yazaki , Nobuhito Matsuyama , Yoshihito Sako , Tomohiko Tanabe
IPC分类号： H04L1256
CPC分类号： H04L45/00 , H04L45/583 , H04L45/60 , H04L49/205 , H04L49/254 , H04L49/30 , H04L49/3009 , H04L49/3063 , H04L49/309 , H04L49/9042 , H04L2012/5618
摘要： A network relaying apparatus and a network relaying method for securing a high communication quality (QoS), a high reliability and security. A transfer engine stores the packets received through at least a network interface in a packet buffer, and the header information in a header RAM. A search engine searches for the transfer control information such as the destination information and the action information based on the header information, and writes them in the header RAM. The transfer engine prepares an output packet based on the information stored in the packet buffer and the header RAM, and outputs the output packet to the destination. A switch switches the output packet to the routing processor of the destination. Each header RAM is asynchronously accessible independently of the packet buffer and suppresses the competition for access between the transfer engine and the search engine.
摘要翻译：一种用于确保高通信质量（QoS），高可靠性和安全性的网络中继设备和网络中继方法。传输引擎将通过至少网络接口接收的分组存储在分组缓冲器中，并且头部信息存储在头部RAM中。搜索引擎基于头信息搜索诸如目的地信息和动作信息的传送控制信息，并将它们写入标题RAM。传输引擎基于存储在分组缓冲器和头部RAM中的信息来准备输出分组，并将输出分组输出到目的地。交换机将输出分组切换到目的地的路由处理器。每个标题RAM是独立于分组缓冲区而异步访问的，并且抑制了传输引擎和搜索引擎之间的访问竞争。

6. 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。

7. 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。

8. 发明授权

US07408935B2 Packet forwarding apparatus with a flow detection table 有权
标题翻译：具有流检测表的分组转发装置
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。

9. 发明授权

US06768738B1 Packet forwarding apparatus with a flow detection table 有权
标题翻译：具有流检测表的分组转发装置
公开(公告)号：US06768738B1
公开(公告)日：2004-07-27
申请号：US09393326
申请日：1999-09-10
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： H04L1256
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。

10. 发明授权

US6122252A Packet switching device and cell transfer control method 失效
标题翻译：分组交换设备和小区传输控制方法
公开(公告)号：US6122252A
公开(公告)日：2000-09-19
申请号：US879906
申请日：1997-06-20
申请人： Takeshi Aimoto , Takeki Yazaki , Yoshihiko Sakata , Nobuhito Matsuyama
发明人： Takeshi Aimoto , Takeki Yazaki , Yoshihiko Sakata , Nobuhito Matsuyama
IPC分类号： H04Q3/00 , H04L12/801 , H04L12/823 , H04L12/833 , H04L12/911 , H04L12/56
CPC分类号： H04L12/5602
摘要： Cells are discarded in conformity with the order of priority when congestion occurs by discarding cells of a traffic class without any special contract for a transfer rate at the time of setting up a connection. A node stores priority information concerning cell discard corresponding to a connection identifier and controls the cell discard in accordance with the discard condition determined by the accumulated number of cells for each connection in the node and cell priority.
摘要翻译：当建立连接时，通过丢弃业务类别的小区而没有传输速率的任何特殊合同，在发生拥塞时遵循优先级顺序丢弃小区。节点存储关于与连接标识符相对应的小区丢弃的优先级信息，并且根据由节点中的每个连接的小区的累积数量确定的丢弃条件和小区优先级来控制小区丢弃。

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