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1. 发明申请

WO2019147316A1 SPECIFYING AND UTILIZING PATHS THROUGH A NETWORK 审中-公开
公开(公告)号：WO2019147316A1
公开(公告)日：2019-08-01
申请号：PCT/US2018/057181
申请日：2018-10-23
申请人： NICIRA, INC.
发明人： BOUTROS, Sami , DUBEY, Ankur , PARSA, Mike , CIDON, Israel , VENUGOPAL, Prashanth
IPC分类号： H04L12/725 , H04L12/46 , H04L12/721
摘要： Traffic engineering refers to a process by which a network administrative program defines specific paths through the network for a series of data message flows. The approaches used to date include MPLS (multiprotocol label switching) techniques that add path descriptive information between layers 2 and 3 headers. Because of this location of the path description, MPLS is commonly referred to as a layer 2.5 protocol. The MPLS techniques, and other previous traffic engineering techniques, however do not readily support encapsulating tenant identifiers. Tying these prior solutions to a tenant will require other policies and multiple encapsulations for the overlay and underlay.

2. 发明申请

WO2019112704A1 HIGH AVAILABILITY FOR STATEFUL SERVICES IN PUBLIC CLOUD LOGICAL NETWORKS 审中-公开
公开(公告)号：WO2019112704A1
公开(公告)日：2019-06-13
申请号：PCT/US2018/057186
申请日：2018-10-23
申请人： NICIRA, INC.
发明人： HIRA, Mukesh , CHANDRASHEKHAR, Ganesan , JAIN, Jayant , JAIN, Rahul
IPC分类号： H04L12/713 , H04L12/931 , H04L29/08 , H04L12/24 , H04L29/12 , H04L12/707 , H04L12/703 , H04L12/741 , H04L12/715 , H04L12/717
摘要： Some embodiments provide a method for a network controller that manages a logical network spanning multiple physical locations. For each physical location hosting data compute nodes (DCNs) belonging to the logical network, the method defines a centralized routing component for processing data messages between the DCNs hosted at the physical location and networks external to the logical network, assigns an active instance of the centralized routing component to operate at the physical location, and assigns a standby instance of the centralized routing component to operate at one of the other physical locations.

3. 发明申请

WO2018204536A1 TIERED APPLICATION DISCOVERY 审中-公开
公开(公告)号：WO2018204536A1
公开(公告)日：2018-11-08
申请号：PCT/US2018/030729
申请日：2018-05-02
申请人： NICIRA, INC.
发明人： GUNDA, Laxmikant , MANIKARNIKE, Srikanth , MYNENI, Sirisha
IPC分类号： G06F9/455 , G06F11/30
摘要： The technology disclosed herein enables identification of multi-tiered applications in virtual computing elements. In a particular embodiment, a method provides identifying a plurality of guest elements executing on one or more host computing systems for a virtual computing environment and categorizing each of the plurality of guest elements into a tier group of a plurality of tier groups. The method further provides monitoring communication traffic between the plurality of guest elements and determining a multi-tiered application for each of the plurality of guest elements based on the communication traffic.

4. 发明申请

WO2018183742A1 IDENTIFIER-BASED VIRTUAL NETWORKING 审中-公开
公开(公告)号：WO2018183742A1
公开(公告)日：2018-10-04
申请号：PCT/US2018/025246
申请日：2018-03-29
申请人： NICIRA, INC.
发明人： HAN, Donghai
IPC分类号： H04L12/46 , H04L29/12 , H04L12/931
CPC分类号： H04L45/74 , H04L12/4633 , H04L12/4641 , H04L12/4679 , H04L49/70 , H04L61/103 , H04L61/1511 , H04L61/2007 , H04L61/2038 , H04L61/2514 , H04L61/2517 , H04L61/2521 , H04L61/3015 , H04L61/6022 , H04L61/6068
摘要： A computer system provides a method for processing network packets using unique identifiers associated with source and destination virtual machines (VMs 130). The method includes receiving, from a first VM (130), a request for address information associated with a second VM (130), generating and returning one or more arbitrarily assigned addresses for the second VM (130), mapping a unique identifier of the second VM (130) to the one or more arbitrarily assigned addresses, receiving a packet from the first VM (130) including one or more addresses associated with the first VM (130) and the one or more arbitrarily assigned addresses associated with the second VM (130), replacing the addresses associated with the first VM (130) with a unique identifier of the first VM (130) and the one or more arbitrarily assigned addresses associated with the second VM (130) with the unique identifier of the second VM (130), and transmitting the packet to a host machine (100) associated with the second VM (130).

5. 发明申请

WO2017189061A1 MANAGEMENT OF UPDATE QUEUES FOR NETWORK CONTROLLER 审中-公开
标题翻译：网络控制器更新队列的管理
公开(公告)号：WO2017189061A1
公开(公告)日：2017-11-02
申请号：PCT/US2017/013820
申请日：2017-01-17
申请人： NICIRA, INC.
发明人： GANICHEV, Igor , YIP, Alexander , THAKKAR, Pankaj , KOPNEN, Teemu , SAXENA, Aayush
IPC分类号： H04L29/08 , H04L12/24 , H04L12/715
摘要： Software-defined networking (SDN) often uses network controllers to configure virtual (logical) networks throughout a datacenter. As SDN becomes more prevalent and datacenters cater to more and more tenants, controllers are expected to perform more operations. Key to this architecture is that the controllers do not become bottlenecks in the configuration process, and that these controllers be able to handle when other elements downstream in the configuration process are bottlenecked (i.e., making sure that if one switch is a bottleneck this does not slow the configuration of other switches). As such, techniques to improve the use of processing resources by network controllers are needed.
摘要翻译：软件定义网络（SDN）通常使用网络控制器来配置整个数据中心的虚拟（逻辑）网络。随着SDN变得越来越普遍，数据中心迎合越来越多的租户，控制器预计将执行更多操作。这种体系结构的关键在于控制器不会成为配置过程中的瓶颈，并且这些控制器能够处理配置过程中下游的其他元素是瓶颈的时候（即，确保如果一个交换机是瓶颈，则这不是瓶颈减慢其他交换机的配置）。因此，需要通过网络控制器改善处理资源使用的技术。

6. 发明申请

WO2017027073A1 ROUTE CONFIGURATION FOR LOGICAL ROUTER 审中-公开
标题翻译：逻辑路由器路由配置
公开(公告)号：WO2017027073A1
公开(公告)日：2017-02-16
申请号：PCT/US2016/025699
申请日：2016-04-01
申请人： NICIRA, INC.
发明人： MASUREKAR, Uday , GOLIYA, Abhishek
IPC分类号： H04L12/715 , H04L12/931 , H04L12/721 , H04L12/717
CPC分类号： H04L45/64 , H04L45/42 , H04L45/44 , H04L49/354 , H04L49/70
摘要： Some embodiments provide a method for implementing a logical router in a logical network. In some embodiments, the method receives a configuration of a static route for the logical router, which includes several routing components with separate routing tables. The method identifies which of the routing components require addition of a route to a corresponding routing table to implement the configuration of the static route. The method adds the routes to the corresponding separate routing tables of the identified routing components.
摘要翻译：一些实施例提供了在逻辑网络中实现逻辑路由器的方法。在一些实施例中，该方法接收逻辑路由器的静态路由的配置，其包括具有单独的路由表的几个路由组件。该方法识别哪些路由组件需要添加到相应路由表的路由来实现静态路由的配置。该方法将路由添加到已标识路由组件的相应单独路由表中。

7. 发明申请

WO2016164277A1 ROUTE SERVER MODE FOR DYNAMIC ROUTING BETWEEN LOGICAL AND PHYSICAL NETWORKS 审中-公开
标题翻译：逻辑与物理网络之间动态路由的路由服务器模式
公开(公告)号：WO2016164277A1
公开(公告)日：2016-10-13
申请号：PCT/US2016/025689
申请日：2016-04-01
申请人： NICIRA, INC.
发明人： RAVINOOTHALA, Sreeram , ZHANG, Ronghua
IPC分类号： H04L12/715 , H04L12/717 , H04L12/931 , H04L12/703
CPC分类号： H04L45/42 , H04L45/28 , H04L45/64 , H04L49/354 , H04L49/70
摘要： Some embodiments provide a method for configuring a logical router that interfaces with an external network. The method receives a configuration for a logical network that includes a logical router with several interfaces that connect to at least one physical router external to the logical network. The method selects a separate host machine to host a centralized routing component for each of the interfaces. The method selects a particular one of the host machines for operating a dynamic routing protocol control plane that receives routing protocol data from each of the centralized routing components and updates routing tables of each of the centralized routing components.
摘要翻译：一些实施例提供了用于配置与外部网络接口的逻辑路由器的方法。该方法接收包括逻辑路由器的逻辑网络的配置，该逻辑路由器具有连接至逻辑网络外部的至少一个物理路由器的多个接口。该方法选择单独的主机来为每个接口托管集中式路由组件。该方法选择主机中的特定一个以操作从每个集中式路由组件接收路由协议数据的动态路由协议控制平面，并更新每个集中式路由组件的路由表。

8. 发明申请

WO2016089441A1 CONTEXT-AWARE DISTRIBUTED FIREWALL 审中-公开
标题翻译：上下文分布式防火墙
公开(公告)号：WO2016089441A1
公开(公告)日：2016-06-09
申请号：PCT/US2015/027632
申请日：2015-04-24
申请人： NICIRA, INC.
发明人： ZHOU, Jingmin , SENGUPTA, Anirban
IPC分类号： H04L29/06 , G06F9/455
CPC分类号： H04L63/0227 , G06F9/45533 , G06F9/45558 , G06F2009/45587 , G06F2009/45595 , H04L45/48 , H04L63/0263
摘要： A context-aware distributed firewall scheme is provided. A firewall engine tasked to provide firewall protection for a set of network addresses applies a reduced set of firewall rules that are relevant to the set of addresses associated with the machine. A hypervisor implements a search structure that allows each virtual machine's filter to quickly identify relevant rules from all of the received rules. The search structure is constructed as a binary prefix tree, each node corresponding to an IP CIDR (Classless Inter-Domain Routing) block. A query for relevant rules traverses nodes of the search structure according to a queried IP address and collect all rules that are associated with the traversed nodes.
摘要翻译：提供了上下文感知分布式防火墙方案。为一组网络地址提供防火墙保护的防火墙引擎应用与机器相关的一组地址相关的减少的一组防火墙规则。管理程序实现一种搜索结构，允许每个虚拟机的过滤器从所有接收到的规则中快速识别相关规则。搜索结构被构造为二进制前缀树，每个节点对应于IP CIDR（无类别域间路由）块。相关规则的查询根据查询的IP地址遍历搜索结构的节点，并收集与遍历节点相关联的所有规则。

9. 发明申请

WO2016003490A1 ENCODING CONTROL PLANE INFORMATION IN TRANSPORT PROTOCOL SOURCE PORT FIELD AND APPLICATIONS THEREOF IN NETWORK VIRTUALIZATION 审中-公开
标题翻译：运输协议源端口编码控制平台信息及其在网络虚拟化中的应用
公开(公告)号：WO2016003490A1
公开(公告)日：2016-01-07
申请号：PCT/US2014/072882
申请日：2014-12-30
申请人： NICIRA, INC.
发明人： HIRA, Mukesh , TESSMER, Alexander , CHANDA, Anupam
IPC分类号： H04L12/46 , H04L12/721 , H04L12/761
CPC分类号： H04L12/4633 , H04L12/18 , H04L12/1886 , H04L12/46 , H04L45/16 , H04L45/38 , H04L45/64 , H04L45/745 , H04L49/354 , H04L69/22
摘要： A novel method that uses the source port field in the transport or connection layer (L4) header to encode control plane information is provided. Specifically, the method encodes control plane information in UDP or TCP source port field of data plane tunnels in an overlay network such as VXLAN. Network virtualization is implemented by a network controller over an overlay network on the physical fabric. The network controller provides a mapping table to the data plane hosts for mapping the encoded bits in the source port field to semantically richer information. The data plane hosts in turn uses the encoded source bits and the mapping table to infer this semantically richer information. This semantically richer information is used to allow receivers of proxied traffic to learn the address of the original sender. The semantically richer information can also be used to enable ECMP for the transmitted packets.
摘要翻译：提供了一种使用传输或连接层（L4）头中的源端口字段来编码控制平面信息的新颖方法。具体来说，该方法在诸如VXLAN的覆盖网络中的数据平面隧道的UDP或TCP源端口字段中编码控制平面信息。网络虚拟化由网络控制器通过物理结构上的覆盖网络实现。网络控制器向数据平面主机提供映射表，用于将源端口字段中的编码位映射到语义更丰富的信息。数据平面主机依次使用编码的源位和映射表来推断这个语义上更丰富的信息。这种语义上更丰富的信息用于允许代理流量的接收者学习原始发送者的地址。语义更丰富的信息也可以用于为传输的数据包启用ECMP。

10. 发明申请

WO2015147942A1 INGRESS ECMP IN VIRTUAL DISTRIBUTED ROUTING ENVIRONMENT 审中-公开
标题翻译：虚拟分布式路由环境中的激活ECMP
公开(公告)号：WO2015147942A1
公开(公告)日：2015-10-01
申请号：PCT/US2014/072866
申请日：2014-12-30
申请人： NICIRA, INC.
发明人： AGARWAL, Vivek , CHANDRASHEKHAR, Ganesan , SUBRAMANIYAM, Rahul, Korivi , SINGH, Ram, Dular , WANG, Howard
IPC分类号： H04L12/707 , H04L12/713 , H04L12/931
CPC分类号： H04L45/24 , H04L45/586 , H04L49/70
摘要： A logical routing element (LRE) having multiple designated instances for routing packets from physical hosts (PH) to a logical network is provided. A PH in a network segment with multiple designated instances can choose among the multiple designated instances for sending network traffic to other network nodes in the logical network according to a load balancing algorithm. Each logical interface (LIF) of an LRE is defined to be addressable by multiple identifiers or addresses, and each LIF identifier or address is assigned to a different designated instance.
摘要翻译：提供了具有用于将来自物理主机（PH）到逻辑网络的分组路由的多个指定实例的逻辑路由选择元素（LRE）。具有多个指定实例的网段中的PH可以根据负载平衡算法在多个指定实例之间选择，以将网络流量发送到逻辑网络中的其他网络节点。 LRE的每个逻辑接口（LIF）被定义为可由多个标识符或地址寻址，并且每个LIF标识符或地址被分配给不同的指定实例。

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