公开(公告)号：US10469498B2

公开(公告)日：2019-11-05

申请号：US14913457

申请日：2014-08-19

Applicant: NEC Corporation

Inventor： Remi Numajiri ,  Takayuki Sasaki ,  Yoichiro Morita ,  Hideyuki Shimonishi ,  Kentaro Sonoda ,  Yoichi Hatano

IPC: H04L29/06 ,  H04L12/911 ,  H04L12/64 ,  H04L12/66

Abstract: A control execution apparatus is provided with a communication unit that makes an inquiry concerning a packet processing method with respect to a predetermined control instruction apparatus, and a packet processing unit that processes packets based on an instruction from the control instruction apparatus. The control instruction apparatus is provided with a communication history management unit that manages communication history between nodes via the control execution apparatus, a node state determination unit that determines, making reference to the communication history of the communication history management unit, whether or not a node that is a transmission source or a transmission destination of the packet for which an inquiry concerning a processing method was received, is on a side that provides a service to another node, and a control instruction unit that prohibits, when at least the node is on the side that provides a service to another node, new communication from the node in question to the other node.

公开(公告)号：US20150236953A1

公开(公告)日：2015-08-20

申请号：US14425528

申请日：2013-09-10

Applicant: NEC CORPORATION

Inventor： Takayuki Sasaki ,  Masayuki Nakae ,  Yoichiro Morita ,  Hideyuki Shimonishi ,  Kentaro Sonoda ,  Yoichi Hatano ,  Masaya Yamagata

IPC: H04L12/741 ,  H04L12/721

CPC classification number: H04L45/74 ,  H04L41/0803 ,  H04L45/38 ,  H04L45/42 ,  H04L45/745 ,  H04L69/22

Abstract: A control device reduces its load responding to a transmission request for control information, and includes a control information management unit managing control information including a match field and causes a packet matching the match field to be processed; a transmission request storage unit storing uncontrolled transmission requests in transmission requests for control information for packets received by a switch under the control from the switch; and a request processing unit selecting a piece of control information having a looser match field from among pieces of control information managed by the control information management unit, then selects an unprocessed transmission requests for control information matching the selected piece of control information having a looser match field in unprocessed transmission requests for control information stored in the transmission request storage unit, and replies control information with the looser match field to the switch transmitting the unprocessed transmission requests for control information.

Abstract translation: 控制装置响应于控制信息的传输请求而减小其负载，并且包括控制信息管理单元，管理包括匹配字段的控制信息，并使与匹配字段匹配的分组被处理; 传输请求存储单元，在开关的控制下，由交换机接收的分组的控制信息的传输请求中存储不受控制的传输请求; 以及请求处理单元，从控制信息管理单元管理的各个控制信息中选择具有更松散的匹配字段的控制信息，然后选择与所选择的具有更松散匹配的控制信息匹配的控制信息的未处理传输请求 在未处理的发送请求中存储在发送请求存储单元中的控制信息的字段，并且将具有更松散匹配字段的控制信息应答到发送未处理的控制信息的发送请求的交换机。

公开(公告)号：US20150172176A1

公开(公告)日：2015-06-18

申请号：US14414489

申请日：2013-07-12

Applicant: NEC Corporation

Inventor： Takayuki Sasaki ,  Masayuki Nakae ,  Hideyuki Shimonishi ,  Kentaro Sonoda ,  Yoichi Hatano ,  Masaya Yamagata ,  Yoichiro Morita

IPC: H04L12/721 ,  H04L29/06 ,  H04L12/741

CPC classification number: H04L45/38 ,  H04L45/74 ,  H04L45/745 ,  H04L47/2483 ,  H04L69/22

Abstract: The present invention reduces load on a control device responding to a request to send control information that is issued from a switch. A control device includes: a control information management unit that manages control information including a match field and used for causing a packet which matches the match field to be processed; and a request processing unit that, when receiving, from a switch under control, a transmission request for control information for processing a packet which the switch receives, compares a match field of control information managed by the control information management unit with a field, which is to be compared with the match field, of a packet received by the switch, selects, from pieces of control information having match fields which match the field of the packet, a piece of control information having a looser match field, and replies to the switch with the selected piece of control information.

Abstract translation: 本发明响应于发送从交换机发出的控制信息的请求而减少控制设备的负担。 控制装置包括：控制信息管理单元，其管理包括匹配字段的控制信息，并用于使与匹配字段匹配的分组被处理; 以及请求处理单元，当从控制开关接收到用于处理交换机接收的分组的控制信息的发送请求时，将由控制信息管理单元管理的控制信息的匹配字段与字段进行比较，其中 将与由交换机接收的分组的匹配字段进行比较，从具有匹配字段的匹配字段的控制信息的片段中选择具有更松散的匹配字段的一条控制信息，并且对 用选定的控制信息切换。

公开(公告)号：US20150172175A1

公开(公告)日：2015-06-18

申请号：US14413677

申请日：2013-07-12

Applicant: NEC Corporation

Inventor： Takayuki Sasaki ,  Masayuki Nakae ,  Hideyuki Shimonishi ,  Kentaro Sonoda ,  Yoichi Hatano ,  Masaya Yamagata ,  Yoichiro Morita

IPC: H04L12/721 ,  H04L12/863 ,  H04L12/741

CPC classification number: H04L45/38 ,  H04L45/745 ,  H04L47/622 ,  H04L49/00

Abstract: To control transmission of a control information transmission request from a switch to a control device. The switch includes: a packet processing unit that processes a received packet by using control information received from a preset control device control device; a communication unit that transmits and receives the control information to and from the control device; and a control unit that controls order of control information to be transmitted and received by the communication unit.

Abstract translation: 控制从开关到控制装置的控制信息发送请求的发送。 交换机包括：分组处理单元，通过使用从预设控制设备控制设备接收的控制信息来处理接收到的分组; 通信单元，其向控制设备发送控制信息并从控制设备接收控制信息; 以及控制单元，其控制由通信单元发送和接收的控制信息的顺序。