公开(公告)号：US07385967B2

公开(公告)日：2008-06-10

申请号：US11013468

申请日：2004-12-17

申请人： Kenichi Nagami ,  Junko Ami ,  Yasuhiro Katsube ,  Takeshi Saito ,  Hiroshi Esaki

发明人： Kenichi Nagami ,  Junko Ami ,  Yasuhiro Katsube ,  Takeshi Saito ,  Hiroshi Esaki

IPC分类号： H04L12/66 ,  H04L12/28

CPC分类号： H04L12/4608 ,  H04L2012/562 ,  H04L2012/5667 ,  H04Q11/0478

摘要： A packet transfer scheme in a network system capable of realizing a high speed, large capacity inter-network communication under an internet environment. A network interconnection apparatus (router) has a memory for storing a correspondence relationship between a virtual connection used in receiving a packet from one logical network and a virtual connection used in transmitting a packet to another logical network, and a transfer at a datalink layer is carried out according to the registered correspondence relationship, to effectively form a bypass pipe capable of transferring a packet by an datalink layer level processing alone over a plurality of networks from the transmission terminal to the destination terminal, so that a high speed packet transfer between networks can be realized.

摘要翻译： 一种能够在互联网环境下实现高速，大容量的网络间通信的网络系统中的分组传送方案。 网络互连装置（路由器）具有用于存储用于从一个逻辑网络接收分组的虚拟连接与将数据包发送到另一个逻辑网络所使用的虚拟连接之间的对应关系的存储器，并且数据链路层的传输是 根据注册的对应关系进行，以便有效地形成能够通过多个网络从传输终端到目的地终端的数据链路层级处理来传送分组的旁路管，使得网络之间的高速分组传送 可以实现。

公开(公告)号：US06501754B1

公开(公告)日：2002-12-31

申请号：US09131361

申请日：1998-08-07

申请人： Yoshihiro Ohba ,  Junichi Takahashi ,  Shigeo Matsuzawa ,  Yasuhiro Katsube

发明人： Yoshihiro Ohba ,  Junichi Takahashi ,  Shigeo Matsuzawa ,  Yasuhiro Katsube

IPC分类号： H04L1228

CPC分类号： H04L49/309 ,  H04L2012/562 ,  H04L2012/5667 ,  H04Q11/0478

摘要： A node device and a label switched path loop detection method which are capable of detecting a label switched path loop efficiently and quickly are disclosed. In a node device for carrying out the label switching, an ingress node information is included in a message that is to be successively transmitted from the upstream side in order to set up a label switched path, and the fact that the message with the same ingress node information for the same packet flow will be received from a previous hop node that is different from before if the label switched path has a loop formed thereon is utilized. Also, at a time of transmitting a message for the purpose of setting up a label switched path, if a node at which the label switched path for that packet flow already exists on the upstream or downstream side is encountered, this already existing label switched path is traced along the same or opposite direction as the flow, and the label switched path is set up if no loop is detected after tracing to the end.

摘要翻译： 公开了能够有效且快速地检测标签交换路径环路的节点设备和标签交换路径环路检测方法。 在用于执行标签交换的节点设备中，入口节点信息被包括在要从上游侧连续发送的消息中，以便建立标签交换路径，以及具有相同入口的消息的事实 如果标签交换路径具有形成在其上的环路，则将从与之前不同的前一跳节点接收相同分组流的节点信息。 此外，在发送用于建立标签交换路径的消息的时候，如果在上游或下游侧已经存在用于该分组流的标签交换路径的节点，则已经存在的标签交换路径 沿着与流程相同或相反的方向进行跟踪，并且如果在跟踪到最后没有检测到环路，则设置标签交换路径。

公开(公告)号：US06343322B2

公开(公告)日：2002-01-29

申请号：US09122644

申请日：1998-07-27

申请人： Kenichi Nagami ,  Junko Ami ,  Yasuhiro Katsube ,  Takeshi Saito ,  Hiroshi Esaki

发明人： Kenichi Nagami ,  Junko Ami ,  Yasuhiro Katsube ,  Takeshi Saito ,  Hiroshi Esaki

IPC分类号： G06F1516

CPC分类号： H04L12/4608 ,  H04L2012/562 ,  H04L2012/5667 ,  H04Q11/0478

摘要： A packet transfer scheme for transferring packets at a boundary of a plurality networks is disclosed. A network interconnection apparatus (router) communicates with a previous hop node in one of the plurality of networks by a first control message including a first identification information for identifying an upstream path from the previous hop node and a specification information for specifying a group of packets to be transferred on the upstream path, and with a next hop node in another of the plurality of networks by a second control message including a second identification information for identifying a downstream path to the next hop node and a specification information for specifying a group of packets to be transferred on the downstream path. Then, the network interconnection apparatus stores a first identifier at a layer lower than layer 3 of the upstream path and a second identifier at a layer lower than layer 3 of the downstream path corresponding to the upstream path, according to the first and second control messages, and transfers a packet from the upstream path to the corresponding downstream path, referring to the memory.

摘要翻译： 公开了一种用于在多个网络的边界传送分组的分组传送方案。 网络互连装置（路由器）通过包括用于识别来自前一跳节点的上游路径的第一标识信息和用于指定一组分组的规格信息的第一控制消息与多个网络中的一个网络中的前一跳节点进行通信 通过第二控制消息在第二控制消息中在上游路径上传送下一跳节点，并且具有用于识别到下一跳节点的下行路径的第二标识信息，以及用于指定一组 要在下游路径上传输的数据包。 然后，根据第一控制消息和第二控制消息，网络互连装置在比上行路径的层3低的层存储第一标识符和比对应于上游路径的下行路径的层3低的第二标识符 并且参考存储器将分组从上游路径传送到相应的下游路径。

公开(公告)号：US6104713A

公开(公告)日：2000-08-15

申请号：US79147

申请日：1998-05-15

申请人： Kenichi Nagami ,  Yasuhiro Katsube

发明人： Kenichi Nagami ,  Yasuhiro Katsube

IPC分类号： H04L29/06 ,  H04L12/46 ,  H04L12/66 ,  H04L12/723 ,  H04L12/851 ,  H04L12/951 ,  H04M3/00 ,  H04Q3/00 ,  H04Q11/04 ,  H04L12/56

CPC分类号： H04Q11/0478 ,  H04L45/10 ,  H04L2012/5616 ,  H04L2012/562 ,  H04L2012/5653 ,  H04L2012/5665 ,  H04L2012/5667 ,  H04L2012/5679

摘要： A router device realizing a datagram transfer method for improving the datagram transfer efficiency by ascertaining the transfer target and/or the requested quality of service without referring to the datagram content. The router device has network interfaces connected with networks including at least one virtual connection oriented network, a memory for storing a correspondence between a virtual connection identifier and a transfer target network interface and/or a quality of service, a connection identifier analysis unit for determining a transfer target network interface and/or a quality of service for a datagram entered from one virtual connection, by referring to the memory according to a virtual connection identifier of that one virtual connection. The datagram can be transferred to the determined transfer target network interface, while applying a priority control for datagrams to be transferred by the router device according to the determined quality of service.

摘要翻译： 实现数据报传输方法的路由器设备，用于通过在不参考数据报内容的情况下确定传输目标和/或所请求的服务质量来提高数据报传输效率。 路由器设备具有与包括至少一个面向虚拟连接的网络的网络连接的网络接口，用于存储虚拟连接标识符和传送目标网络接口之间的对应关系的存储器和/或服务质量，连接标识符分析单元，用于确定 通过根据该一个虚拟连接的虚拟连接标识符参考存储器，从一个虚拟连接输入的数据报的传送目标网络接口和/或服务质量。 数据报可以被传送到确定的传送目标网络接口，同时根据确定的服务质量对路由器设备传送的数据报应用优先级控制。

公开(公告)号：US6094431A

公开(公告)日：2000-07-25

申请号：US758480

申请日：1996-11-29

申请人： Katsumi Yamato ,  Yasuhiro Katsube

发明人： Katsumi Yamato ,  Yasuhiro Katsube

IPC分类号： H04L12/56 ,  H04Q11/04 ,  H04L12/28 ,  H04J3/16

CPC分类号： H04L12/5602 ,  H04Q11/0478 ,  H04L2012/5634 ,  H04L2012/5667

摘要： A network resource reservation scheme capable of making a resource reservation at the IP level according to the resource reservation protocol at a time of data packet transfer at the IP level using ATM networks. A node device requests a change of a virtual connection for transferring data packets to a prescribed virtual connection for providing a service which is capable of changing an amount of resource without reestablishing connections, when a prescribed message of a resource reservation protocol for that virtual connection is received, and transmits the data packets to the prescribed virtual connection established in response to the request. A node device determines a necessary amount of resource according to a requested quality of service described in a received reservation message of a resource reservation protocol. A node device then requests a change of an amount of resource reserved in a virtual connection for transferring data packets in order to reserve the necessary amount of resource in that virtual connection, and transmits the data packets to that virtual connection in which the amount of resource reserved therein is changed in response to the request.

摘要翻译： 一种网络资源预留方案，其能够使用ATM网络在IP级别的数据分组传输时根据资源预约协议在IP级别进行资源预留。 节点设备请求更改虚拟连接以将数据包传送到规定的虚拟连接，以便在用于提供能够在不重新建立连接的情况下能够改变资源量的服务的情况下，当该虚拟连接的资源预留协议的规定消息为 接收并将数据分组发送到响应于该请求建立的规定的虚拟连接。 节点设备根据接收到的资源预留协议的预留消息中描述的所请求的服务质量来确定必要的资源量。 然后，节点设备请求在虚拟连接中预留的资源量的改变以传送数据分组，以便在该虚拟连接中保留所需的资源量，并将数据分组发送到该资源量的该虚拟连接 保留在其中根据请求而改变。

公开(公告)号：US5930259A

公开(公告)日：1999-07-27

申请号：US701985

申请日：1996-08-23

申请人： Yasuhiro Katsube ,  Kenichi Nagami

发明人： Yasuhiro Katsube ,  Kenichi Nagami

IPC分类号： H04L12/56 ,  H04Q11/04

CPC分类号： H04L49/309 ,  H04Q11/0478 ,  H04L2012/562 ,  H04L2012/5667

摘要： A packet transmission node which realizes a packet transfer scheme in which a plurality of virtual connections for different qualities of service are set up in correspondence to a multicast destination address, and output virtual connection identifiers are stored in correspondence to destination addresses in a routing table, so that a packet is transferred to output virtual connections determined by referring to the routing table according to a destination address of a packet. A packet transmission node also realizes a control information transfer scheme in which different output virtual connections are set up for a user data packet and a control packet having an identical destination address, and output virtual connection identifiers are stored in correspondence to destination addresses and upper layer protocol identifiers in a routing table, so that a packet is transferred to an output virtual connection determined by referring to the routing table according to a destination address and an upper layer protocol identifier of a packet.

摘要翻译： 实现分组传输方案的分组传输节点，其中针对多播目的地地址建立用于不同服务质量的多个虚拟连接，并且输出虚拟连接标识符对应于路由表中的目的地地址存储， 使得分组被传送到根据分组的目的地地址参考路由表确定的输出虚拟连接。 分组传输节点还实现控制信息传输方案，其中针对用户数据分组和具有相同目的地地址的控制分组建立不同的输出虚拟连接，并且输出虚拟连接标识符对应于目的地地址和上层 路由表中的协议标识符，使得分组被传送到根据分组的目的地址和上层协议标识符参考路由表确定的输出虚拟连接。