公开(公告)号：US20160028628A1

公开(公告)日：2016-01-28

申请号：US14775577

申请日：2014-03-13

Applicant: NEC CORPORATION

Inventor： Lei SUN ,  Kazuya SUZUKI ,  Hideyuki SHIMONISHI ,  Kazushi SUGYOU

IPC: H04L12/56 ,  H04L5/00 ,  H04L29/12

CPC classification number: H04L45/741 ,  H04L5/0044 ,  H04L12/6418 ,  H04L61/103 ,  H04L61/2015 ,  H04L61/2038 ,  H04L61/2092 ,  H04L61/6022

Abstract: A communication system includes an allocated address storage unit that stores an address allocated using host location information, and an address management unit that refers to the allocated address storage unit and uses the host location information to allocate an address to a host to which the address has not been allocated.

Abstract translation: 通信系统包括分配的地址存储单元，其存储使用主机位置信息分配的地址，以及地址管理单元，其参考分配的地址存储单元，并使用主机位置信息来分配地址到地址所在的主机 没有分配

公开(公告)号：US20190097917A1

公开(公告)日：2019-03-28

申请号：US16088110

申请日：2017-03-23

Applicant: NEC Corporation

Inventor： Yohei IIZAWA ,  Kazuya SUZUKI

IPC: H04L12/707 ,  H04L12/703

Abstract: A network system according to one example embodiment of the present invention in a multilayer network having an upper layer and a lower layer each including a plurality of links in which each of the plurality of links on the upper layer is associated with a plurality of paths on the lower layer, and the network system includes: a candidate link selection unit that, when at least one path of the plurality of paths on the lower layer associated with one link of the plurality of links on the upper layer does not overlap with an active path on the upper layer, selects the one link as a candidate link; and a backup path determination unit that uses the candidate link to determine a backup path for the active path on the upper layer.

公开(公告)号：US20170310597A1

公开(公告)日：2017-10-26

申请号：US15521735

申请日：2015-10-29

Applicant: NEC CORPORATION

Inventor： Masaharu MORIMOTO ,  Kazuya SUZUKI ,  Yohei IIZAWA

IPC: H04L12/801 ,  H04L12/931 ,  H04L12/709 ,  G06F17/00 ,  H04L12/26

CPC classification number: H04L47/196 ,  G06F17/00 ,  H04L43/00 ,  H04L45/02 ,  H04L45/245 ,  H04L45/507 ,  H04L45/586 ,  H04L45/64 ,  H04L47/825 ,  H04L49/602 ,  H04L69/321

Abstract: The objective of the invention is to enable sharing, between layers in a network in which the layers are used to perform communications, resource information and information required for using paths. A network control system includes: a lower layer information storage unit, a lower layer control information conversion unit, an upper layer information storage unit, an upper layer control information conversion unit, an integrated layer information storage unit and a layer integration unit. The layer integration unit integrates, as virtual links, the information of flows, which are representative of communications among terminals in the lower layer, with the network information of the upper layer, thereby constituting the network information of the integrated layer. Further, the layer integration unit performs reciprocal exchanges of network information among the integrated layer information storage unit, the lower layer information storage unit and the upper layer information storage unit, said reciprocal exchanges including a process of giving, as the attribute information of the ports of the upper layer, label information required for using the virtual link provided by the lower layer.

公开(公告)号：US20190222505A1

公开(公告)日：2019-07-18

申请号：US16331187

申请日：2017-09-08

Applicant: NEC Corporation

Inventor： Hiroya KANEKO ,  Kazuya SUZUKI

IPC: H04L12/751 ,  H04L12/723 ,  H04L12/721 ,  H04L12/733 ,  H04L12/66

CPC classification number: H04L45/08 ,  H04L12/46 ,  H04L12/66 ,  H04L45/122 ,  H04L45/32 ,  H04L45/507 ,  H04L45/66

Abstract: For a flooded packet transmitted from a first base to a second base connected to a transport network, a first edge node in the transport network first sets path selection information for selecting a return path for transmitting a packet from the second base to the first base, and then transmits the packet to the second base via the path configured in advance. When receiving the flooded packet, a second edge node selects the return path on the basis of the path selection information from a plurality of path candidates configured in advance between the first base and the second base and learns the path in association with information indicating the transmission source.

公开(公告)号：US20170078196A1

公开(公告)日：2017-03-16

申请号：US15361762

申请日：2016-11-28

Applicant: NEC Corporation

Inventor： Junichi YAMATO ,  Kazuya SUZUKI

IPC: H04L12/741 ,  H04L29/12 ,  H04L12/721

CPC classification number: H04L45/74 ,  H04L45/12 ,  H04L45/34 ,  H04L61/103 ,  H04L61/2007 ,  H04L61/6022

Abstract: A communication system includes: a plurality of nodes each of which requests a processing rule for processing a received packet; and a control apparatus that determines in response to the request a processing rule corresponding to the received packet and notifies the determined processing rule to at least one of the plurality of nodes. One of the plurality of nodes forwards to the control apparatus a first packet for acquiring a destination address for a predetermined communication. The control apparatus in response to determination of the destination address determines a processing rule for processing a second packet to be transmitted to the destination address and notifies the determined processing rule to at least one of the plurality of nodes.

Abstract translation: 通信系统包括：多个节点，每个节点请求处理接收到的分组的处理规则; 以及控制装置，其响应于所述请求确定与所接收的分组相对应的处理规则，并将所确定的处理规则通知给所述多个节点中的至少一个。 多个节点之一向控制装置转发用于获取预定通信的目的地地址的第一分组。 响应于目的地地址的确定，控制装置确定处理要发送到目的地地址的第二分组的处理规则，并将确定的处理规则通知给多个节点中的至少一个节点。

公开(公告)号：US20150304216A1

公开(公告)日：2015-10-22

申请号：US14372199

申请日：2012-10-31

Applicant: NEC CORPORATION

Inventor： Kazuya SUZUKI ,  Hideyuki SHIMONISHI ,  Daisuke KOTANI

IPC: H04L12/741 ,  H04L12/18

CPC classification number: H04L45/74 ,  H04L12/18 ,  H04L45/16 ,  H04L45/22 ,  H04L45/28 ,  H04L45/48

Abstract: A control apparatus includes: a path calculation unit that calculates first and second paths sharing start and end nodes out of a plurality of nodes; a rule generation unit that generates a first rule for forwarding a packet along the first path and a second rule for forwarding a packet along the second path; and a rule transmission unit that sends the first and the second rules to at least one of the nodes, and has at least one of the nodes forward a packet according to either the first rule or the second rule.

Abstract translation: 控制装置包括：路径计算单元，其计算在多个节点中共享起始和终止节点的第一和第二路径; 规则生成单元，其生成用于沿着所述第一路径转发分组的第一规则和用于沿着所述第二路径转发分组的第二规则; 以及规则传输单元，其将所述第一和第二规则发送到所述节点中的至少一个，并且所述节点中的至少一个根据所述第一规则或所述第二规则转发分组。

公开(公告)号：US20180062876A1

公开(公告)日：2018-03-01

申请号：US15557672

申请日：2016-03-10

Applicant: NEC CORPORATION

Inventor： Yohei IIZAWA ,  Kazuya SUZUKI

IPC: H04L12/46 ,  H04L12/24 ,  G06F9/455 ,  H04L12/717

CPC classification number: H04L12/4641 ,  G06F9/45558 ,  G06F2009/45595 ,  H04L41/0856 ,  H04L41/12 ,  H04L45/38 ,  H04L45/42 ,  H04L45/64 ,  H04L47/82

Abstract: A control apparatus comprises a creation unit creates a virtual network on the basis of the state of physical resources and a resource separation unit separates resources allocated to the virtual networks created by the creation unit for each virtual network.

公开(公告)号：US20160301629A1

公开(公告)日：2016-10-13

申请号：US14911334

申请日：2014-08-28

Applicant: NEC CORPORATION

Inventor： Kazuya SUZUKI

IPC: H04L12/947 ,  H04L12/855

CPC classification number: H04L49/25 ,  H04L45/00 ,  H04L47/2466

Abstract: To achieve a transmission of a control message to a device provided separately from a control device without increasing load on the control device which controls a transfer device. A control device 90 controls a packet transferring operation of a plurality of transfer devices to transfer a packet. The control device 90 includes a transfer-rule-for-control generation element 91. The transfer-rule-for-control generation element 91 generates a transfer rule for control which defines an operation for a transfer device to transfer, between a router and a route information collection device, a control message to notify a route information collection device of route information indicating a route used when a router transmits a packet to another router via a transfer device.

Abstract translation: 为了实现将控制消息传输到与控制装置分开设置的装置，而不增加控制传送装置的控制装置上的负载。 控制装置90控制多个传送装置的分组传送操作以传送分组。 控制装置90包括用于控制的传送规则生成元件91.控制传输规则生成元件91生成用于控制的传送规则，该传送规则定义了用于传送设备的操作之间的路由器和 路由信息收集装置，向路由信息收集装置通知指示路由器经由传送装置向另一路由器发送分组时使用的路由的路由信息​​收集装置。

公开(公告)号：US20160006601A1

公开(公告)日：2016-01-07

申请号：US14769784

申请日：2014-02-24

Applicant: NEC CORPORATION

Inventor： Kazuya SUZUKI

IPC: H04L12/24 ,  H04L12/855 ,  H04L12/717 ,  H04L12/707 ,  H04L12/703

CPC classification number: H04L41/0663 ,  H04L41/0816 ,  H04L45/22 ,  H04L45/28 ,  H04L45/42 ,  H04L47/2466

Abstract: A controller includes a first control information generation unit that generates the first control information that causes a forwarding apparatus being controlled to forward a packet(s) over a first path, and a second control information generation unit that generates the second control information that causes the forwarding apparatus being controlled to forward a group of packets inclusive of the packet as an object controlled by the first control information over a second path different from the first path. The controller also includes a forwarding control unit that sets the priority level of the first control information and the second control information in the forwarding apparatus being controlled so that the priority level of the second control information will be higher than that of the first control information and that, by instructing the forwarding apparatus being controlled to delete the second control information, changes over the forwarding path of at least the packet(s) matching the first control information.

Abstract translation: 控制器包括：第一控制信息生成单元，其生成使被控制的转发装置通过第一路径转发分组的第一控制信息;以及第二控制信息生成单元，其生成导致 转发装置被控制为通过不同于第一路径的第二路径将包括该分组的一组分组转发为由第一控制信息控制的对象。 所述控制器还包括转发控制单元，其将所述转发装置中的所述第一控制信息和所述第二控制信息的优先级设置为被控制，使得所述第二控制信息的优先级别将高于所述第一控制信息的优先级， 通过指示转发装置被控制删除第二控制信息，改变至少与第一控制信息匹配的分组的转发路径。

公开(公告)号：US20190036817A1

公开(公告)日：2019-01-31

申请号：US16072580

申请日：2017-03-16

Applicant: NEC Corporation

Inventor： Kazuya SUZUKI ,  Hiroya KANEKO ,  Hajime AIZAWA

IPC: H04L12/721 ,  H04L12/713 ,  H04L12/753 ,  H04L12/741

Abstract: A transport network control apparatus includes a unit configured to acquire, from a cloud management system configured to manage a first base and a second base that are connected via a transport network configured to provide a layer 2 connection service, a MAC address to be used for a frame that is transmitted from any one of the bases, a unit configured to compute, on the transport network, a forwarding path for forwarding the frame between the first and second bases using the MAC address as a destination, and a unit configured to set, in a forwarding node on the transport network, a forwarding rule for causing the frame to be forwarded along the computed forwarding path.