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    PERIODICAL GENERATION OF NETWORK MEASUREMENT DATA
    3.
    发明申请
    PERIODICAL GENERATION OF NETWORK MEASUREMENT DATA 审中-公开

    公开(公告)号：US20170195221A1

    公开(公告)日：2017-07-06

    申请号：US15400846

    申请日：2017-01-06

    申请人： Nicira, Inc.

    发明人： Jun Xiao ,  Romain F. Lenglet

    IPC分类号： H04L12/721 ,  H04L12/24 ,  H04L12/26

    CPC分类号： H04L45/70 ,  H04L41/046 ,  H04L41/0896 ,  H04L41/12 ,  H04L43/0882 ,  H04L43/0894 ,  H04L43/10 ,  H04L43/12 ,  H04L45/02 ,  H04L47/125

    摘要： Some embodiments provide a method that generates different network measurements data (e.g., network topology, bandwidth estimation of different paths, etc.) for a pair of endpoints upon receiving a network administrative request (e.g., an application programming interface (API) request) or by other means (e.g., automatically and without intervention of a user). In some embodiments, the method is implemented by a network measurement agent operating on each endpoint and a centralized service component (e.g., web service layer) executing on a network manager machine (e.g., a controller) that responds to measurement requests. The network measurement agent probes the network periodically (i.e., in certain time intervals) or upon an API request that it receives through the network manager machine to gather the measurement data of a particular network topology between a pair of endpoints.

    PROCEDURES FOR EFFICIENT CLOUD SERVICE ACCESS IN A SYSTEM WITH MULTIPLE TENANT LOGICAL NETWORKS
    4.
    发明申请
    PROCEDURES FOR EFFICIENT CLOUD SERVICE ACCESS IN A SYSTEM WITH MULTIPLE TENANT LOGICAL NETWORKS 有权
    在具有多个逻辑网络的系统中有效的云服务访问的程序

    公开(公告)号：US20150281060A1

    公开(公告)日：2015-10-01

    申请号：US14228225

    申请日：2014-03-27

    申请人： Nicira, Inc.

    发明人： Jun Xiao

    IPC分类号： H04L12/741

    CPC分类号： H04L45/74 ,  H04L12/6418

    摘要： A method of providing efficient access to cloud services in a network that includes a several tenant logical networks and a set of service logical networks. The method receives, from a particular tenant VM, a first packet that specifies a destination address associated with a service VM of a service logical network. The method, based on the destination address of the first packet, replaces the source network address and source port number of the first packet with one of a set of network address and port number pairs allocated for accessing service VMs. The method receives from the particular VM a second packet that specifies a destination address outside the tenant logical network but not associated with any service VM. The method, without modifying the source address and port number of the second packet, forwards the second packet to a network element outside the host for network NAT processing.

    摘要翻译： 提供对包括多个租户逻辑网络和一组服务逻辑网络的网络中的云服务的有效访问的方法。 该方法从特定租户VM接收指定与服务逻辑网络的服务VM相关联的目的地地址的第一分组。 该方法基于第一个数据包的目标地址，用分配给访问业务虚拟机的一组网络地址和端口号对替换第一个数据包的源网络地址和源端口号。 该方法从特定VM接收指定在租户逻辑网络外部但不与任何服务VM相关联的目的地地址的第二分组。 该方法在不修改第二个分组的源地址和端口号的情况下，将第二个分组转发到主机外部的网元进行网络NAT处理。

    Logical network traffic analysis
    7.
    发明授权
    Logical network traffic analysis 有权

    公开(公告)号：US11128550B2

    公开(公告)日：2021-09-21

    申请号：US16672374

    申请日：2019-11-01

    申请人： Nicira, Inc.

    发明人： Romain F. Lenglet ,  Rajiv Ramanathan ,  Jun Xiao

    IPC分类号： H04L12/26

    摘要： Some embodiments of the invention provide a method for gathering data for logical network traffic analysis by sampling flows of packets forwarded through a logical network. Some embodiments are implemented by a set of network virtualization controllers that, on a shared physical infrastructure, can implement two or more sets of logical forwarding elements that define two or more logical networks. In some embodiments, the method (1) defines an identifier for a logical network probe, (2) associates this identifier with one or more logical observation points in the logical network, and (3) distributes logical probe configuration data, including sample-action flow entry data, to one or more managed forwarding elements that implement the logical processing pipeline at the logical observation points associated with the logical network probe identifier. In some embodiments, the sample-action flow entry data specify the packet flows that the forwarding elements should sample and the percentage of packets within these flows that the forwarding elements should sample.

    LOGICAL NETWORK TRAFFIC ANALYSIS
    8.
    发明申请
    LOGICAL NETWORK TRAFFIC ANALYSIS 审中-公开

    公开(公告)号：US20200067799A1

    公开(公告)日：2020-02-27

    申请号：US16672374

    申请日：2019-11-01

    申请人： Nicira, Inc.

    发明人： Romain F. Lenglet ,  Rajiv Ramanathan ,  Jun Xiao

    IPC分类号： H04L12/26

    摘要： Some embodiments of the invention provide a method for gathering data for logical network traffic analysis by sampling flows of packets forwarded through a logical network. Some embodiments are implemented by a set of network virtualization controllers that, on a shared physical infrastructure, can implement two or more sets of logical forwarding elements that define two or more logical networks. In some embodiments, the method (1) defines an identifier for a logical network probe, (2) associates this identifier with one or more logical observation points in the logical network, and (3) distributes logical probe configuration data, including sample-action flow entry data, to one or more managed forwarding elements that implement the logical processing pipeline at the logical observation points associated with the logical network probe identifier. In some embodiments, the sample-action flow entry data specify the packet flows that the forwarding elements should sample and the percentage of packets within these flows that the forwarding elements should sample.

    PRIVATE ALLOCATED NETWORKS OVER SHARED COMMUNICATIONS INFRASTRUCTURE
    9.
    发明申请
    PRIVATE ALLOCATED NETWORKS OVER SHARED COMMUNICATIONS INFRASTRUCTURE 审中-公开

    公开(公告)号：US20190260858A1

    公开(公告)日：2019-08-22

    申请号：US16403518

    申请日：2019-05-04

    申请人： Nicira, Inc.

    发明人： W. Andrew Lambeth ,  Anupam Dalal ,  Borislav Deianov ,  Jun Xiao

    IPC分类号： H04L29/06 ,  H04L29/08 ,  H04L12/46 ,  H04L29/12 ,  H04L12/715 ,  H04L12/741 ,  H04L12/931

    摘要： Methods and systems for implementing private allocated networks in a virtual infrastructure are presented. One method operation creates virtual switches in one or more hosts in the virtual infrastructure. Each port in the virtual switches is associated with a private allocated network (PAN) from a group of possible PANs. In one embodiment, one or more PANs share the same physical media for data transmission. The intranet traffic within each PAN is not visible to nodes that are not connected to the each PAN. In another operation, the method defines addressing mode tables for the intranet traffic within each PAN. The entries in the addressing mode tables define addressing functions for routing the intranet traffic between the virtual switches, and different types of addressing functions are supported by the virtual switches.

    Private allocated networks over shared communications infrastructure
    10.
    发明授权
    Private allocated networks over shared communications infrastructure 有权

    公开(公告)号：US10291753B2

    公开(公告)日：2019-05-14

    申请号：US15865226

    申请日：2018-01-08

    申请人： Nicira, Inc.

    发明人： W. Andrew Lambeth ,  Anupam Dalal ,  Borislav Deianov ,  Jun Xiao

    IPC分类号： H04L12/46 ,  H04L29/06 ,  H04L29/08 ,  H04L29/12 ,  H04L12/715 ,  H04L12/741 ,  H04L12/931

    摘要： Methods and systems for implementing private allocated networks in a virtual infrastructure are presented. One method operation creates virtual switches in one or more hosts in the virtual infrastructure. Each port in the virtual switches is associated with a private allocated network (PAN) from a group of possible PANs. In one embodiment, one or more PANs share the same physical media for data transmission. The intranet traffic within each PAN is not visible to nodes that are not connected to the each PAN. In another operation, the method defines addressing mode tables for the intranet traffic within each PAN. The entries in the addressing mode tables define addressing functions for routing the intranet traffic between the virtual switches, and different types of addressing functions are supported by the virtual switches.