公开(公告)号：EP3280103A1

公开(公告)日：2018-02-07

申请号：EP16773073.8

申请日：2016-03-30

申请人： NEC Corporation

发明人： KUBOTA, Kazushi ,  TAKASHIMA, Masanori ,  TANABE, Yosuke ,  KASE, Tomohiro

IPC分类号： H04L12/717 ,  H04L12/70

CPC分类号： G06F9/45533 ,  G06F9/45558 ,  G06F9/5077 ,  G06F2009/4557 ,  G06F2009/45595 ,  H04L41/0806 ,  H04L45/00 ,  H04L67/10 ,  H04L67/1029 ,  H04L67/18

摘要： A controller that implements a service on a virtual network, on a physical NW, a method for rendering the service, and a program, are presented. The controller, comprises: first means for identifying a communication node(s) corresponding to a service(s) requested by a user(s); second means for identifying information regarding a position of the identified communication node(s) in a physical network; and third means for setting a data path implementing the service(s) on the physical network based on the information regarding the position.

摘要翻译： 呈现了在虚拟网络上，在物理NW上实现服务的控制器，用于呈现服务的方法和程序。 该控制器包括：第一装置，用于识别与（一个或多个）用户请求的服务相对应的通信节点; 用于识别关于在物理网络中识别的通信节点的位置的信息的第二装置; 以及用于基于关于位置的信息来设置在物理网络上实施服务的数据路径的第三装置。

公开(公告)号：EP3110085A1

公开(公告)日：2016-12-28

申请号：EP15752215.2

申请日：2015-02-18

申请人： NEC Corporation

发明人： WANG, Longjiang ,  SUZUKI, Yoji ,  TAKASHIMA, Masanori ,  TORIGOE, Keisuke

IPC分类号： H04L12/723 ,  H04L12/70

CPC分类号： H04L45/745 ,  H04L12/4645 ,  H04L45/00 ,  H04L45/308 ,  H04L45/54 ,  H04L45/64

摘要： According to the present invention, when an operation at an ingress/egress of a network is implemented as an action resulted from searches of tables, needed action patterns can be reduced, and accommodation of action resources can be expanded. In each of switches, there are provided a plurality of stages of tables including at least a first table and a second table mutually different in mapping of egress information of a network and user information to a packet. Each of the tables is used for searching whether predetermined information of the packet matches a search key of an entry in the table and an operation defined by an action corresponding to the matched search key is performed. The first table is searched for a first packet that has been received. When the search key of the first table is matched, the operation according to the action corresponding to the search key of the first table is applied to the first packet to convert the first packet to a second packet. The second packet is supplied to the second table. The second table is then searched for the second packet. When the search key of the second table is matched, the operation according to the action corresponding to the search key of the second table is applied to the second packet to convert the second packet to a third packet (refer to Fig. 5 ).

摘要翻译： 根据本发明，当网络的入口/出口的操作被实现为由表的搜索引起的动作时，可以减少所需的动作模式，并且可以扩展动作资源的调节。 在每个交换机中，提供了多个级的表，其包括至少第一表和第二表，所述第一表和第二表在将网络的出口信息和用户信息映射到分组时彼此不同。 每个表用于搜索分组的预定信息是否与表中的条目的搜索关键字匹配，并且执行由与匹配的搜索关键字相对应的动作定义的操作。 第一个表搜索已收到的第一个数据包。 当第一表的搜索关键字匹配时，根据与第一表的搜索关键字对应的动作的操作被应用于第一分组，以将第一分组转换成第二分组。 第二个数据包被提供给第二个表。 然后第二个表被搜索第二个数据包。 当第二表的搜索关键字匹配时，根据与第二表的搜索关键字对应的动作的操作被应用于第二分组，以将第二分组转换成第三分组（参见图5）。

公开(公告)号：EP3007390A1

公开(公告)日：2016-04-13

申请号：EP14804715.2

申请日：2014-05-29

申请人： NEC Corporation

发明人： SHIMADA, Nozomi ,  TAKASHIMA, Masanori ,  SUZUKI, Yoji

IPC分类号： H04L12/761 ,  H04L12/70 ,  H04L12/717

CPC分类号： H04L45/16 ,  H04L12/18 ,  H04L12/1886 ,  H04L12/6418 ,  H04L45/586 ,  H04L45/64

摘要： Multicast is enabled easily and conveniently. A control apparatus includes: a first control unit that configures a first virtual network by setting control information in a relay apparatus(es); a multicast group management unit that holds a configuration(s) of a multicast group(s) configured by an apparatus(es) connected to the relay apparatus(es); a multicast path calculation unit that calculates a path(s) for transmitting a multicast packet(s) to the apparatus(es) that belongs to the multicast group(s) on the basis of information about a topology representing a connection relationship about the relay apparatus(es); and a second control unit that sets control information instructing forwarding of the multicast packet(s) along the path(s) in the relay apparatus(es).

摘要翻译： 组播功能简单方便。 控制装置包括：第一控制单元，通过在中继设备中设置控制信息来配置第一虚拟网络; 保存由与所述中继装置连接的装置构成的多播组的配置的组播组管理单元; 多播路径计算单元，其基于关于代表关于中继的连接关系的拓扑的信息来计算用于将多播分组发送到属于多播组的装置的路径 装置（ES）; 以及第二控制单元，其设置指示沿着所述中继设备中的路径转发所述多播分组的控制信息。

公开(公告)号：EP3461077A1

公开(公告)日：2019-03-27

申请号：EP18200176.8

申请日：2011-12-27

申请人： NEC Corporation

发明人： TAKASHIMA, Masanori ,  KASE, Tomohiro

IPC分类号： H04L12/70 ,  H04L12/715 ,  H04L12/741 ,  H04L12/781 ,  H04L12/725 ,  H04L12/931 ,  H04L12/721 ,  H04L12/851

摘要： In an OpenFlow network, a "proactive type" is attained and hardware (HW) performance problem is solved. Specifically, in the OpenFlow network, each of a plurality of switches executes, on a reception packet that meets a rule of an entry registered in its own flow table, an operation based on an action defined in the entry. A controller registers an entry, in which an identifier unique to a path calculated based on a physical topology of a network composed of the plurality of switches is set as a rule and an output from a predetermined output port as an action, in each of the plurality of switches before communication is started among the plurality of switches.

公开(公告)号：EP3086516B1

公开(公告)日：2018-09-05

申请号：EP14871212.8

申请日：2014-12-18

申请人： NEC Corporation

发明人： TANABE, Yosuke ,  TAKASHIMA, Masanori

IPC分类号： H04L12/709 ,  H04L12/801 ,  H04L12/721

CPC分类号： H04L45/32 ,  H04L12/462 ,  H04L45/245 ,  H04L47/33 ,  Y02D50/30

摘要： A configuration is provided enabling a plurality of trunks to be configured without increasing the number of stack links. A control apparatus sets, in a relay device: first control information that forwards, when a packet for flooding is received by a representative port of a trunk, the packet to a prescribed forwarding destination port and to a representative port of another trunk; second control information that executes, when the packet for flooding is received by a nonrepresentative port of the truck, forwarding of the packet to a stack link port associated with the same trunk group as the trunk of the port that received the packet for flooding, and forwarding to a nonrepresentative port of another trunk in the trunk group; and third control information that forwards, when the packet for flooding is received by the stack link port, the packet to a prescribed forwarding destination port and to a representative port of a trunk not belonging to the same trunk group.

公开(公告)号：EP3139555A1

公开(公告)日：2017-03-08

申请号：EP15786524.7

申请日：2015-04-30

申请人： NEC Corporation

发明人： TAKAJO, Mamoru ,  SUZUKI, Yoji ,  TAKASHIMA, Masanori

IPC分类号： H04L12/823 ,  H04L12/717

CPC分类号： H04L47/323 ,  H04L45/64 ,  H04L47/25 ,  H04L69/22

摘要： The present invention enriches methods of suppression of transmission of the inquiry messages of the flow entries. A communication apparatus comprises a packet reception notifying unit that, when receiving predetermined packets, transmits to a predetermined control apparatus a packet reception notification, wherein the packet reception notification indicates that the predetermined packets have been received. Regarding a packet specified by the control apparatus among the predetermined packets, the communication apparatus performs predetermined transmission restraint control of the packet reception notification.

摘要翻译： 本发明丰富了流条目的查询消息的发送的抑制的方法。 一种通信装置，包括：分组接收通知单元，当接收到预定的数据包，发送到预定的控制装置的分组接收通知，worin分组接收通知指示DASS死预定分组已被接收到。 关于由控制装置在预定的分组中指定的数据包，所述通信设备执行预定的分组接收通知的发送约束控制。

公开(公告)号：EP2506504A1

公开(公告)日：2012-10-03

申请号：EP10832779.2

申请日：2010-08-25

申请人： NEC Corporation

发明人： IZAWA, Tetsu ,  TAKASHIMA, Masanori

IPC分类号： H04L12/56

CPC分类号： H04L49/355 ,  H04L45/308

摘要： A relay device 100 transmits received data to a transfer destination device. The data includes attribute information representing each of a plurality of attributes. The relay device includes a first storage section 101 which stores first rule information for specifying the transfer destination device based on the attribute information with respect to each of the attributes constituting a first attribute group including the plurality of the attributes, a second storage section 102 which stores second rule information for specifying the transfer destination device based on the attribute information with respect to each of the attributes constituting a second attribute group including part of the plurality of the attributes, and a transfer control section 103 which, in the case where the information quantity stored in the first storage section is larger than a preset first threshold quantity, if the information for specifying the transfer destination device only based on the attribute information with respect to each of the attributes constituting the second attribute group is stored in the first storage section as the first rule information, migrates the first rule information to the second storage section.

公开(公告)号：EP3481012A1

公开(公告)日：2019-05-08

申请号：EP17819956.8

申请日：2017-06-20

申请人： NEC Corporation

发明人： TORIGOE, Keisuke ,  TAKASHIMA, Masanori

IPC分类号： H04L12/70

摘要： In order to enable easy checking of whether there is an abnormality in a transmission entry stored in this switch, a server of the present invention is provided with: a storage means for storing topology information representing a topology of a network composed of a plurality of switches; a path generating means for generating network path information representing a communication path on the network on the basis of the topology information; a communication means for acquiring, from the switch, the transmission entry learned by the switch on the basis of switch path information representing a broadcast domain to which a port of the switch included in the network belongs; and a mapping means for mapping the transmission entry and the network path information to the topology information.

公开(公告)号：EP3280100A1

公开(公告)日：2018-02-07

申请号：EP16772938.3

申请日：2016-03-30

申请人： NEC Corporation

发明人： KUBOTA, Kazushi ,  TAKASHIMA, Masanori ,  KASE, Tomohiro ,  TANABE, Yosuke

IPC分类号： H04L12/70 ,  H04L12/717

CPC分类号： H04L49/70 ,  G06F2009/45595 ,  H04L12/46 ,  H04L12/66 ,  H04L45/38 ,  H04L45/64

摘要： A controller that implements a service on a virtual network, on a physical NW, a method for rendering the service, and a program, are presented. The controller, comprises: first means for identifying a virtual machine(s) capable of providing a function(s) of a network node; second means for identifying information regarding a position of the identified virtual machine(s) in a physical network; and third means for setting based on the information regarding the position a data path implementing the function(s) of the network node on the physical network.

摘要翻译： 呈现了在虚拟网络上，在物理NW上实现服务的控制器，用于呈现服务的方法和程序。 该控制器包括：用于识别能够提供网络节点的功能的一个或多个虚拟机的第一装置; 用于识别关于在物理网络中识别的虚拟机的位置的信息的第二装置; 以及用于基于关于实现物理网络上的网络节点的功能的数据路径的位置的信息来设置的第三装置。

公开(公告)号：EP3086516A1

公开(公告)日：2016-10-26

申请号：EP14871212.8

申请日：2014-12-18

申请人： NEC Corporation

发明人： TANABE, Yosuke ,  TAKASHIMA, Masanori

IPC分类号： H04L12/703 ,  H04L12/28 ,  H04L12/717 ,  H04L12/761

CPC分类号： H04L45/32 ,  H04L12/462 ,  H04L45/245 ,  H04L47/33 ,  Y02D50/30

摘要： A configuration is provided enabling a plurality of trunks to be configured without increasing the number of stack links. A control apparatus sets, in a relay device: first control information that forwards, when a packet for flooding is received by a representative port of a trunk, the packet to a prescribed forwarding destination port and to a representative port of another trunk; second control information that executes, when the packet for flooding is received by a nonrepresentative port of the truck, forwarding of the packet to a stack link port associated with the same trunk group as the trunk of the port that received the packet for flooding, and forwarding to a nonrepresentative port of another trunk in the trunk group; and third control information that forwards, when the packet for flooding is received by the stack link port, the packet to a prescribed forwarding destination port and to a representative port of a trunk not belonging to the same trunk group.

摘要翻译： 提供使树干的多个配置而不增加左堆的数量进行配置。 的控制装置集，在一个中继装置：第一控制信息做向前，当通过中继线，该分组到规定的转发目的地端口和另一条中继线的代表端口的代表性端口接收到用于驱的分组; 第二控制信息确实执行，当驱分组由卡车的非代表性端口接收，该数据包具有相同中继线群作为端口的中继相关联的堆叠链路端口的转发没有接收到用于驱分组，和 转发到中继组中的另一个中继的非代表性端口; 和第三控制信息做向前，当通过堆叠链路端口接收对于水浸到分组时，分组到规定的转发目的地端口和干线不属于同一中继线群的代表端口。