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21. 发明授权

US08717895B2 Network virtualization apparatus and method with a table mapping engine 有权
标题翻译：具有表映射引擎的网络虚拟化设备和方法
公开(公告)号：US08717895B2
公开(公告)日：2014-05-06
申请号：US13177530
申请日：2011-07-06
申请人： Teemu Koponen , Pankaj Thakkar , Martin Casado , W. Andrew Lambeth , Alexander Yip , Jeremy Stribling
发明人： Teemu Koponen , Pankaj Thakkar , Martin Casado , W. Andrew Lambeth , Alexander Yip , Jeremy Stribling
IPC分类号： H04L12/26 , H04L12/54 , G06F15/173 , G06F12/10
CPC分类号： H04L41/0893 , G06F11/07 , G06F15/17312 , H04L12/4633 , H04L41/0816 , H04L41/0853 , H04L41/0896 , H04L45/00 , H04L45/586 , H04L47/783 , H04L49/00 , H04L49/1546 , H04L49/3063 , H04L49/70 , H04L61/2007 , H04L61/6022
摘要： Some embodiments provide a virtualizer for managing a plurality of managed switching elements that forward data through a network. The virtualizer comprises a first set of tables for storing input logical forwarding plane data and a second set of tables for storing output physical control plane data. It also includes a table mapping engine for mapping the input logical forwarding plane data in the first set of tables to output physical control plane data in the second set of tables by performing a set of database join operations on the input logical forwarding plane data in the first set of tables. In some embodiments, the physical control plane data is subsequently translated into physical forwarding behaviors that direct the forwarding of data by the managed switching elements.
摘要翻译：一些实施例提供了一种虚拟器，用于管理通过网络转发数据的多个被管理的交换元件。虚拟器包括用于存储输入逻辑转发平面数据的第一组表和用于存储输出物理控制平面数据的第二组表。它还包括一个表映射引擎，用于映射第一组表中的输入逻辑转发平面数据，以通过对输入的逻辑转发平面数据执行一组数据库连接操作来输出第二组表中的物理控制平面数据第一套表。在一些实施例中，物理控制平面数据随后被转换成物理转发行为，其指导被管理的交换元件转发数据。

22. 发明申请

US20130060929A1 DISTRIBUTED CONTROL PLATFORM FOR LARGE-SCALE PRODUCTION NETWORKS 有权
标题翻译：用于大规模生产网络的分布式控制平台
公开(公告)号：US20130060929A1
公开(公告)日：2013-03-07
申请号：US13177538
申请日：2011-07-06
申请人： Teemu Koponen , Martin Casado , Natasha Gude , Jeremy Stribling
发明人： Teemu Koponen , Martin Casado , Natasha Gude , Jeremy Stribling
IPC分类号： G06F15/173 , G06F11/30
CPC分类号： H04L41/0893 , G06F11/07 , G06F15/17312 , H04L12/4633 , H04L41/0816 , H04L41/0853 , H04L41/0896 , H04L45/00 , H04L45/586 , H04L47/783 , H04L49/00 , H04L49/1546 , H04L49/3063 , H04L49/70 , H04L61/2007 , H04L61/6022
摘要： Some embodiments provide a program that monitors several network controllers in a network. Each network controller manages a logical data path set that is implemented across several managed switching elements. The program detects that a first network controller in the several network controllers has failed. The program selects a second network controller in the several network controllers to manage the logical data path set managed by the first network controller.
摘要翻译：一些实施例提供了监视网络中的若干网络控制器的程序。每个网络控制器管理跨多个管理的交换元件实现的逻辑数据路径集合。该程序检测到几个网络控制器中的第一个网络控制器出现故障。程序选择多个网络控制器中的第二个网络控制器来管理由第一个网络控制器管理的逻辑数据路径集。

23. 发明申请

US20130060922A1 USE OF NETWORK INFORMATION BASE STRUCTURE TO ESTABLISH COMMUNICATION BETWEEN APPLICATIONS 有权
标题翻译：使用网络信息基础架构建立应用之间的通信
公开(公告)号：US20130060922A1
公开(公告)日：2013-03-07
申请号：US13177541
申请日：2011-07-06
申请人： Teemu Koponen , Martin Casado , Jeremy Stribling , Natasha Gude
发明人： Teemu Koponen , Martin Casado , Jeremy Stribling , Natasha Gude
IPC分类号： G06F15/173
CPC分类号： H04L41/0893 , G06F11/07 , G06F15/17312 , H04L12/4633 , H04L41/0816 , H04L41/0853 , H04L41/0896 , H04L45/00 , H04L45/586 , H04L47/783 , H04L49/00 , H04L49/1546 , H04L49/3063 , H04L49/70 , H04L61/2007 , H04L61/6022
摘要： Some embodiments provide a program for managing several switching elements. The program receives, at a network information base (NIB) data structure that stores data for managing the several switching elements, a request to notify a first application that uses the NIB when a set of data stored in the NIB is changed. The program changes, in response to an instruction from a second application, the set of data in the NIB. The program sends a notification to the first application of the change to the set of data in the NIB.
摘要翻译：一些实施例提供用于管理若干开关元件的程序。该程序在存储用于管理多个交换单元的数据的网络信息库（NIB）数据结构中接收到当存储在NIB中的一组数据改变时通知使用NIB的第一应用的请求。响应于来自第二应用的指令，该程序改变NIB中的一组数据。该程序向NIB中的数据集发送通知给第一次应用更改。

24. 发明申请

US20130058215A1 NETWORK VIRTUALIZATION APPARATUS AND METHOD WITH A TABLE MAPPING ENGINE 有权
标题翻译：网络虚拟化设备和方法与表映射引擎
公开(公告)号：US20130058215A1
公开(公告)日：2013-03-07
申请号：US13177530
申请日：2011-07-06
申请人： Teemu Koponen , Pankaj Thakkar , Martin Casado , W. Andrew Lambeth , Alexander Yip , Jeremy Stribling
发明人： Teemu Koponen , Pankaj Thakkar , Martin Casado , W. Andrew Lambeth , Alexander Yip , Jeremy Stribling
IPC分类号： H04L12/56 , H04L12/26
CPC分类号： H04L41/0893 , G06F11/07 , G06F15/17312 , H04L12/4633 , H04L41/0816 , H04L41/0853 , H04L41/0896 , H04L45/00 , H04L45/586 , H04L47/783 , H04L49/00 , H04L49/1546 , H04L49/3063 , H04L49/70 , H04L61/2007 , H04L61/6022
摘要： Some embodiments provide a virtualizer for managing a plurality of managed switching elements that forward data through a network. The virtualizer comprises a first set of tables for storing input logical forwarding plane data and a second set of tables for storing output physical control plane data. It also includes a table mapping engine for mapping the input logical forwarding plane data in the first set of tables to output physical control plane data in the second set of tables by performing a set of database join operations on the input logical forwarding plane data in the first set of tables. In some embodiments, the physical control plane data is subsequently translated into physical forwarding behaviors that direct the forwarding of data by the managed switching elements.
摘要翻译：一些实施例提供了一种虚拟器，用于管理通过网络转发数据的多个被管理的交换元件。虚拟器包括用于存储输入逻辑转发平面数据的第一组表和用于存储输出物理控制平面数据的第二组表。它还包括一个表映射引擎，用于映射第一组表中的输入逻辑转发平面数据，以通过对输入的逻辑转发平面数据执行一组数据库连接操作来输出第二组表中的物理控制平面数据第一套表。在一些实施例中，物理控制平面数据随后被转换成物理转发行为，其指导被管理的交换元件转发数据。

25. 发明授权

US09391928B2 Method and apparatus for interacting with a network information base in a distributed network control system with multiple controller instances 有权
标题翻译：在具有多个控制器实例的分布式网络控制系统中与网络信息库进行交互的方法和装置
公开(公告)号：US09391928B2
公开(公告)日：2016-07-12
申请号：US13219557
申请日：2011-08-26
申请人： Teemu Koponen , Martin Casado , Jeremy Stribling , Natasha Gude
发明人： Teemu Koponen , Martin Casado , Jeremy Stribling , Natasha Gude
IPC分类号： G06F15/173 , H04L12/931 , H04L12/933 , H04L12/713 , H04L12/54 , H04L12/24 , H04L12/935 , H04L12/46 , H04L12/911 , G06F11/07
CPC分类号： H04L41/0893 , G06F11/07 , G06F15/17312 , H04L12/4633 , H04L41/0816 , H04L41/0853 , H04L41/0896 , H04L45/00 , H04L45/586 , H04L47/783 , H04L49/00 , H04L49/1546 , H04L49/3063 , H04L49/70 , H04L61/2007 , H04L61/6022
摘要： A control system including several controllers for managing several switching elements. A first controller registers a second controller for receiving a notification when a data tuple changes in a network information base (NIB) storage of the first controller that stores data for managing a set of switching elements. The first controller changes the data tuple in the NIB. The first controller sends the notification to the second controller of the change to the data tuple in the NIB. The first and second controllers operate on two different computing devices. Each controller receives logical control plane data for specifying logical datapath sets and converts the logical control plane data to physical control plane data for enabling the switching elements to implement the logical datapath sets.
摘要翻译：一种控制系统，包括用于管理多个开关元件的多个控制器。当存储用于管理一组开关元件的数据的第一控制器的网络信息库（NIB）存储器中的数据元组改变时，第一控制器注册用于接收通知的第二控制器。第一个控制器更改NIB中的数据元组。第一控制器向第二控制器发送对NIB中的数据元组的更改的通知。第一和第二控制器在两个不同的计算设备上运行。每个控制器接收用于指定逻辑数据路径集合的逻辑控制平面数据，并将逻辑控制平面数据转换为物理控制平面数据，以使切换元件能够实现逻辑数据路径集。

26. 发明授权

US09209998B2 Packet processing in managed interconnection switching elements 有权
标题翻译：管理互联交换元件中的数据包处理
公开(公告)号：US09209998B2
公开(公告)日：2015-12-08
申请号：US13589042
申请日：2012-08-17
申请人： Martin Casado , Teemu Koponen , Pankaj Thakkar
发明人： Martin Casado , Teemu Koponen , Pankaj Thakkar
IPC分类号： H04L12/66 , H04L12/54 , H04L12/715 , H04L12/24 , H04L12/26
CPC分类号： H04L12/66 , H04L41/044 , H04L45/04
摘要： Some embodiments provide a novel method for forwarding a packet at a first managed interconnection switching element in a managed network of interconnection switching elements. The method receives a packet from a source machine on a first network segment in a first network. The packet identifies a destination machine located on a second network segment in a second, different network. The method removes a context tag that identifies the first network segment. The method uses the identification of the first network segment to determine a logical switching element that connects at least the first and second network segments. The method encapsulates the packet with a logical context identifier that identifies a logical port of the logical switching element. The logical port corresponds to the second network segment. The method transmits the twice-encapsulated packet towards a second managed interconnection switching element at the second network.
摘要翻译：一些实施例提供了一种用于在互连交换元件的受管网络中的第一受管互连交换元件处转发分组的新颖方法。该方法在第一网络中的第一网段上从源计算机接收分组。分组识别位于第二不同网络中的第二网段上的目的地机器。该方法会删除标识第一个网段的上下文标签。该方法使用第一网段的识别来确定连接至少第一和第二网段的逻辑交换单元。该方法使用标识逻辑交换元件的逻辑端口的逻辑上下文标识来封装分组。逻辑端口对应于第二个网段。该方法在第二网络向第二受管互连交换元件发送两次封装的分组。

27. 发明授权

US09172663B2 Method and apparatus for replicating network information base in a distributed network control system with multiple controller instances 有权
标题翻译：在具有多个控制器实例的分布式网络控制系统中复制网络信息库的方法和装置
公开(公告)号：US09172663B2
公开(公告)日：2015-10-27
申请号：US13218431
申请日：2011-08-25
申请人： Martin Casado , Teemu Koponen , Jeremy Stribling
发明人： Martin Casado , Teemu Koponen , Jeremy Stribling
IPC分类号： H04L12/54 , G06F15/16 , G06F17/30 , H04L12/931 , H04L12/933 , H04L12/713 , H04L12/24 , H04L12/935 , G06F15/173 , G06F11/07
CPC分类号： H04L41/0893 , G06F11/07 , G06F15/17312 , H04L12/4633 , H04L41/0816 , H04L41/0853 , H04L41/0896 , H04L45/00 , H04L45/586 , H04L47/783 , H04L49/00 , H04L49/1546 , H04L49/3063 , H04L49/70 , H04L61/2007 , H04L61/6022
摘要： A network control system that includes several controllers for managing several switching elements. Each controller includes a network information base (NIB) storage that stores data regarding the switching elements and a secondary storage for facilitating replication of at least a portion of data across the NIB storages of the different controllers. In some embodiments, the primary purpose for one or more of the secondary storage structures is to back up the data in the NIB. In these or other embodiments, one or more of the secondary storage structures serve a purpose other than backing up the data in the NIB. In some embodiments, the NIB is stored in system memory while the system operates for fast access of the NIB records. In some embodiments, one or more of the secondary storage structures are stored on disks which can be slower to access.
摘要翻译：一种网络控制系统，包括用于管理多个开关元件的多个控制器。每个控制器包括存储关于切换元件的数据的网络信息库（NIB）存储器和辅助存储器，用于促进跨不同控制器的NIB存储器的数据的至少一部分的复制。在一些实施例中，一个或多个次要存储结构的主要目的是备份NIB中的数据。在这些或其他实施例中，一个或多个辅助存储结构用于除了备份NIB中的数据之外的目的。在一些实施例中，NIB存储在系统存储器中，同时系统操作以快速访问NIB记录。在一些实施例中，一个或多个二级存储结构存储在可以较慢访问的盘上。

28. 发明授权

US08842679B2 Control system that elects a master controller instance for switching elements 有权
标题翻译：选择用于切换元件的主控制器实例的控制系统
公开(公告)号：US08842679B2
公开(公告)日：2014-09-23
申请号：US13177543
申请日：2011-07-06
申请人： Teemu Koponen , Martin Casado
发明人： Teemu Koponen , Martin Casado
IPC分类号： H04L12/28 , H04L12/54 , G06F15/16 , G06F15/173 , H04L12/931 , H04L12/24 , G06F11/07
CPC分类号： H04L41/0893 , G06F11/07 , G06F15/17312 , H04L12/4633 , H04L41/0816 , H04L41/0853 , H04L41/0896 , H04L45/00 , H04L45/586 , H04L47/783 , H04L49/00 , H04L49/1546 , H04L49/3063 , H04L49/70 , H04L61/2007 , H04L61/6022
摘要： Some embodiments provide a control system for managing a network that includes several switching elements managed by the control system. The system includes several controller instances for managing the switching elements. Each particular controller instance includes a coordination manager for communicating with the coordination managers of the other controllers in order to partition control of the plurality of switching elements by electing a master controller for different sets of switching elements. The particular controller instance also includes a storage for storing control data for controlling the set of managed switching elements managed by the controller instance, and a switch interface for passing the control data to the set of managed switching elements.
摘要翻译：一些实施例提供了一种用于管理包括由控制系统管理的多个交换元件的网络的控制系统。该系统包括用于管理开关元件的几个控制器实例。每个特定控制器实例包括协调管理器，用于与其他控制器的协调管理器进行通信，以便通过为不同组的交换单元选择主控制器来分配多个交换单元的控制。特定控制器实例还包括用于存储控制数据的存储器，用于控制由控制器实例管理的一组被管理交换单元，以及切换接口，用于将控制数据传送到一组管理的交换元件。

29. 发明授权

US08830835B2 Generating flows for managed interconnection switches 有权
标题翻译：为管理互连交换机生成流
公开(公告)号：US08830835B2
公开(公告)日：2014-09-09
申请号：US13589046
申请日：2012-08-17
申请人： Martin Casado , Teemu Koponen , Pankaj Thakkar
发明人： Martin Casado , Teemu Koponen , Pankaj Thakkar
IPC分类号： H04L1/00 , H04L12/28 , G06F15/16 , G06F15/173 , H04L12/66 , H04L12/26
CPC分类号： H04L12/66 , H04L41/044 , H04L45/04
摘要： A network controller for managing a set of interconnection switching elements that connect segmented networks to a shared physical interconnection network. The network controller includes i) an interface for receiving a logical control plane definition of a logical switching element that couples to a set of network segments at different segmented networks; ii) a control application for translating the logical control plane definition of the logical switching element into a first set of flow entries in a logical forwarding plane; and iii) a virtualization application for translating the first set of flow entries into a second set of flow entries in a physical control plane. The flow entries in the physical control plane are for subsequent conversion by the managed interconnection switching elements into a third set of flow entries in a physical forwarding plane that directs the forwarding of network data by the managed interconnection switching elements.
摘要翻译：一种网络控制器，用于管理将分段网络连接到共享物理互连网络的一组互连交换元件。网络控制器包括：i）用于接收在不同分段网络处耦合到一组网络段的逻辑交换元件的逻辑控制平面定义的接口; ii）用于将逻辑交换元件的逻辑控制平面定义翻译成逻辑转发平面中的第一组流条目的控制应用; 以及iii）用于将所述第一组流条目转换为物理控制平面中的第二组流条目的虚拟化应用。物理控制平面中的流条目用于随后由被管理的互连交换元件转换成物理转发平面中的第三组流条目，该物理转发平面指导被管理的互连交换元件转发网络数据。

30. 发明申请

US20130060738A1 DISTRIBUTED NETWORK CONTROL SYSTEM WITH A DISTRIBUTED HASH TABLE 有权
标题翻译：分布式网络控制系统
公开(公告)号：US20130060738A1
公开(公告)日：2013-03-07
申请号：US13218433
申请日：2011-08-25
申请人： Teemu Koponen , Martin Casado , Jeremy Stribling , Natasha Gude
发明人： Teemu Koponen , Martin Casado , Jeremy Stribling , Natasha Gude
IPC分类号： G06F17/30
CPC分类号： H04L41/0893 , G06F11/07 , G06F15/17312 , H04L12/4633 , H04L41/0816 , H04L41/0853 , H04L41/0896 , H04L45/00 , H04L45/586 , H04L47/783 , H04L49/00 , H04L49/1546 , H04L49/3063 , H04L49/70 , H04L61/2007 , H04L61/6022
摘要： A network control system that includes several controllers for managing several switching elements and a distributed hash table (DHT) formed across the controllers for storing data regarding the switching elements that is accessible by the controllers. Each hash table serves as a DHT instance. In some embodiments, the DHT instances of all controller instances collectively store one set of records that is indexed based on hashed indices for quick access. These records are distributed across the different controller instances to minimize the size of the records within each instance and to allow for the size of the DHT to be increased by adding other DHT instances. According to this scheme, each DHT record is not stored in each controller instance. In fact, in some embodiments, each DHT record is stored in at most one controller instance.
摘要翻译：一种网络控制系统，其包括用于管理多个交换元件的多个控制器和跨越控制器形成的分布式哈希表（DHT），用于存储关于控制器可访问的交换元件的数据。每个哈希表用作DHT实例。在一些实施例中，所有控制器实例的DHT实例共同地存储基于用于快速访问的散列索引进行索引的一组记录。这些记录分布在不同的控制器实例之间，以最小化每个实例中记录的大小，并允许通过添加其他DHT实例来增加DHT的大小。根据该方案，每个DHT记录不存储在每个控制器实例中。事实上，在一些实施例中，每个DHT记录被存储在至多一个控制器实例中。

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