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1. 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。

2. 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。

3. 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。

4. 发明授权

US07170885B2 Packet switching method and apparatus thereof 有权
标题翻译：分组交换方法及其装置
公开(公告)号：US07170885B2
公开(公告)日：2007-01-30
申请号：US10361817
申请日：2003-02-11
申请人： Nagayuki Hirota , Hiroshi Sekino , Shigeki Morimoto , Yoshihito Sako , Masashi Fukuda
发明人： Nagayuki Hirota , Hiroshi Sekino , Shigeki Morimoto , Yoshihito Sako , Masashi Fukuda
IPC分类号： H04L12/28 , H04L12/56 , H04J3/26
CPC分类号： H04L45/08 , H04L45/16 , H04L45/36
摘要： A packet switching is performed according to a routing information for relaying particular packets which is produced by the route computation based on the information of a received packet and the kept parts-of-routing-information useful as a basis for the route computation. At this time, the route through which the packet is relayed is determined on the basis of the kept parts-of-routing-information before the route computation. Then, the received packet is relayed according to the determined route. Next, a new routing information is produced by the route computation based on the information of the received packet and the parts-of-routing-information. Thereafter, the succeeding packets of the same route are relayed on the basis of the new routing information.
摘要翻译：根据用于中继基于接收到的分组的信息的路由计算产生的特定分组的路由信息和有用的路由计算的基础的保持的路由信息部分，执行分组交换。此时，基于在路由计算之前的保持的路由信息部分，确定分组被中继的路由。然后，根据确定的路由中继接收到的分组。接下来，基于接收到的分组的信息和路由部分信息，通过路由计算产生新的路由信息。此后，基于新的路由信息中继相同路由的后续分组。

5. 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。

6. 发明授权

US06542496B1 Packet switching method and apparatus thereof 有权
公开(公告)号：US06542496B1
公开(公告)日：2003-04-01
申请号：US09321121
申请日：1999-05-27
申请人： Nagayuki Hirota , Hiroshi Sekino , Shigeki Morimoto , Yoshihito Sako , Masashi Fukuda
发明人： Nagayuki Hirota , Hiroshi Sekino , Shigeki Morimoto , Yoshihito Sako , Masashi Fukuda
IPC分类号： H04L1228
CPC分类号： H04L45/08 , H04L45/16 , H04L45/36
摘要： A packet switching is performed according to a routing information for relaying particular packets which is produced by the route computation based on the information of a received packet and the kept parts-of-routing-information useful as a basis for the route computation. At this time, the route through which the packet is relayed is determined on the basis of the kept parts-of-routing-information before the route computation. Then, the received packet is relayed according to the determined route. Next, a new routing information is produced by the route computation based on the information of the received packet and the parts-of-routing-information. Thereafter, the succeeding packets of the same route are relayed on the basis of the new routing information.

7. 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。

8. 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。

9. 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。

10. 发明授权

US5978844A Internetworking apparatus for load balancing plural networks 失效
标题翻译：用于负载平衡多个网络的互联设备
公开(公告)号：US5978844A
公开(公告)日：1999-11-02
申请号：US708927
申请日：1996-09-06
申请人： Kazuaki Tsuchiya , Yoshihito Sako , Tetsuo Oura , Ken Watanabe
发明人： Kazuaki Tsuchiya , Yoshihito Sako , Tetsuo Oura , Ken Watanabe
IPC分类号： G06F9/50 , G06F13/00
CPC分类号： G06F9/5083
摘要： An internetworking apparatus for interconnecting a plurality of networks, having forwarding sections corresponding to interfaces of the networks, each including a processor for performing packet forwarding processing and a statistics unit for collecting processing time statistics of the processor. An adjusting section connected to all the forwarding sections through a bus instructs each processor to change a program to be executed thereby based on the processing time statistics reported by each processor so as to balance processing loads on the respective processors.
摘要翻译：一种用于互连多个网络的互联网络装置，具有对应于网络接口的转发部分，每个网络包括用于执行分组转发处理的处理器和用于收集处理器的处理时间统计信息的统计单元。通过总线连接到所有转发部分的调整部分指示每个处理器基于每个处理器报告的处理时间统计来改变要执行的程序，以平衡各个处理器上的处理负载。

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