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1. 发明申请

US20170163532A1 ROUTE ADVERTISEMENT BY MANAGED GATEWAYS 审中-公开
公开(公告)号：US20170163532A1
公开(公告)日：2017-06-08
申请号：US15436714
申请日：2017-02-17
申请人： Nicira, Inc.
发明人： Ariel Tubaltsev , Ronghua Zhang , Benjamin C. Basler , Serge Maskalik , Rajiv Ramanathan , David J. Leroy , Srinivas Neginhal , Kai-Wei Fan , Ansis Atteka
IPC分类号： H04L12/741 , H04L12/713 , H04L12/931
CPC分类号： H04L45/74 , H04L45/02 , H04L45/586 , H04L49/354
摘要： Some embodiments provide a network system. The network system includes a first set of host machines for hosting virtual machines that connect to each other through a logical network. The first set of host machines includes managed forwarding elements for forwarding data between the host machines. The network system includes a second set of host machines for hosting virtualized containers that operate as gateways for forwarding data between the virtual machines and an external network. At least one of the virtualized containers peers with at least one physical router in the external network in order to advertise addresses of the virtual machines to the physical router.

2. 发明授权

US09590901B2 Route advertisement by managed gateways 有权
标题翻译：由管理网关路由广告
公开(公告)号：US09590901B2
公开(公告)日：2017-03-07
申请号：US14214561
申请日：2014-03-14
申请人： Nicira, Inc.
发明人： Ariel Tubaltsev , Ronghua Zhang , Benjamin C. Basler , Serge Maskalik , Rajiv Ramanathan , David J. Leroy , Srinivas Neginhal , Kai-Wei Fan , Ansis Atteka
IPC分类号： H04L12/713 , H04L12/751
CPC分类号： H04L45/74 , H04L45/02 , H04L45/586 , H04L49/354
摘要： Some embodiments provide a network system. The network system includes a first set of host machines for hosting virtual machines that connect to each other through a logical network. The first set of host machines includes managed forwarding elements for forwarding data between the host machines. The network system includes a second set of host machines for hosting virtualized containers that operate as gateways for forwarding data between the virtual machines and an external network. At least one of the virtualized containers peers with at least one physical router in the external network in order to advertise addresses of the virtual machines to the physical router.
摘要翻译：一些实施例提供网络系统。网络系统包括用于托管通过逻辑网络彼此连接的虚拟机的第一组主机。第一组主机包括用于在主机之间转发数据的托管转发元件。网络系统包括用于托管虚拟化容器的第二组主机，其作为用于在虚拟机和外部网络之间转发数据的网关。至少一个虚拟化容器与外部网络中的至少一个物理路由器对等，以便将虚拟机的地址通告给物理路由器。

3. 发明授权

US09503321B2 Dynamic routing for logical routers 有权
标题翻译：逻辑路由器的动态路由
公开(公告)号：US09503321B2
公开(公告)日：2016-11-22
申请号：US14222561
申请日：2014-03-21
申请人： Nicira, Inc.
发明人： Srinivas Neginhal , Ronghua Zhang
IPC分类号： H04L12/28 , H04L12/24 , H04L12/713 , H04L12/715
CPC分类号： H04L41/0803 , H04L41/0806 , H04L45/586 , H04L45/64
摘要： Some embodiments provide a method for a network controller that manages a first logical router of a logical network that is implemented across several managed network elements. The method receives input data specifying a first route for a second logical router. Based on a connection between the first logical router and a second logical router in the logical network, the method dynamically generates a second route for the first logical router based on the first route. The method distributes data to implement the first logical router, including the second route, to a set of the managed network elements.
摘要翻译：一些实施例提供了一种网络控制器的方法，该网络控制器管理跨多个受管网络元件实现的逻辑网络的第一逻辑路由器。该方法接收指定第二逻辑路由器的第一路由的输入数据。基于第一逻辑路由器和逻辑网络中的第二逻辑路由器之间的连接，该方法基于第一路由动态地生成用于第一逻辑路由器的第二路由。该方法分发数据以将第一逻辑路由器（包括第二路由）实现到一组被管理网元。

4. 发明申请

US20220150112A1 MULTIPLE LEVELS OF LOGICAL ROUTERS 有权
公开(公告)号：US20220150112A1
公开(公告)日：2022-05-12
申请号：US17579513
申请日：2022-01-19
申请人： Nicira, Inc.
发明人： Srinivas Neginhal , Ronghua Zhang
IPC分类号： H04L41/0803 , H04L69/22 , H04L45/00 , H04L12/28 , H04L49/00 , H04L41/08 , H04L41/0893 , H04L45/586 , H04L12/46
摘要： Some embodiments provide a managed network for implementing a logical network for a tenant. The managed network includes a first set of host machines and a second set of host machines. The first set of host machines is for hosting virtual machines (VMs) for the logical network. Each of the first set of host machines operates a managed forwarding element that implements a first logical router for the tenant logical network and a second logical router to which the first logical router connects. The implementation of the second logical router is for processing packets entering and exiting the tenant logical network. The second set of host machines is for hosting L3 gateways for the second logical router. The L3 gateways connect the tenant logical network to at least one external network.

5. 发明授权

US10411955B2 Multiple levels of logical routers 有权
公开(公告)号：US10411955B2
公开(公告)日：2019-09-10
申请号：US15495930
申请日：2017-04-24
申请人： Nicira, Inc.
发明人： Srinivas Neginhal , Ronghua Zhang
IPC分类号： H04L12/24 , H04L12/46 , H04L12/931 , H04L12/28 , H04L12/721 , H04L12/741 , H04L12/713 , H04L29/06 , H04L29/08 , G06F9/455
摘要： Some embodiments provide a managed network for implementing a logical network for a tenant. The managed network includes a first set of host machines and a second set of host machines. The first set of host machines is for hosting virtual machines (VMs) for the logical network. Each of the first set of host machines operates a managed forwarding element that implements a first logical router for the tenant logical network and a second logical router to which the first logical router connects. The implementation of the second logical router is for processing packets entering and exiting the tenant logical network. The second set of host machines is for hosting L3 gateways for the second logical router. The L3 gateways connect the tenant logical network to at least one external network.

6. 发明申请

US20160301655A1 ADDRESS RESOLUTION PROTOCOL SUPPRESSION USING A FLOW-BASED FORWARDING ELEMENT 审中-公开
标题翻译：地址解决方案使用基于流程的前向元素的协议抑制
公开(公告)号：US20160301655A1
公开(公告)日：2016-10-13
申请号：US14958186
申请日：2015-12-03
申请人： Nicira, Inc.
发明人： Harold Vinson C. Lim , Mart Haitjema , Srinivas Neginhal , Pankaj Thakkar , Teemu Koponen , Anupam Chanda , Benjamin L. Pfaff
IPC分类号： H04L29/12 , H04L12/721
摘要： A method of suppressing ARP packets in a logical network comprising a set of data compute nodes (DCNs). The DCNs are hosted on a set of physical hosts. Each DCN has a protocol address and is connected to a forwarding elements (FE) on the corresponding host. Each FE has a set of flows that specifies a set of conditions to match a set of fields of each received packet and a set of actions to take on a packet that matches the set of conditions. An FE on a physical host receives a packet sent by a first DCN on the physical host and determines that the received packet is an ARP request packet by matching a set of fields in the packet with a set of conditions of a particular flow. The ARP request packet identifies a protocol address of a second DCN on the logical network. The PFE utilizes the actions specified by the particular flow to determine a corresponding hardware address for the target protocol address by searching an address-mapping table that maps the protocol address of each DCN to a corresponding hardware address. The PFE converts the ARP request packet to an ARP reply packet utilizing the set of actions specified by the particular flow, the ARP reply packet comprising the determined target address as a resolution of the ARP request. The PFE sends the ARP reply packet to the first DCN without broadcasting the ARP request to any DCNs on the logical network.
摘要翻译：一种抑制包括一组数据计算节点（DCN）的逻辑网络中的ARP分组的方法。 DCN托管在一组物理主机上。每个DCN具有协议地址，并连接到相应主机上的转发元素（FE）。每个FE具有一组流，其指定一组条件以匹配每个接收到的分组的一组字段以及对与该组条件匹配的分组执行的一组动作。物理主机上的FE接收物理主机上由第一DCN发送的分组，并且通过将分组中的一组字段与特定流的一组条件进行匹配来确定所接收的分组是ARP请求分组。 ARP请求包标识逻辑网络上第二个DCN的协议地址。 PFE利用特定流指定的动作，通过搜索将每个DCN的协议地址映射到对应的硬件地址的地址映射表来确定目标协议地址的相应硬件地址。 PFE使用由特定流指定的一组动作将ARP请求分组转换为ARP应答分组，ARP响应分组包括确定的目标地址作为ARP请求的分辨率。 PFE将ARP应答报文发送给第一个DCN，而不向广播逻辑网络上的任何DCN广播ARP请求。

7. 发明申请

US20150263946A1 ROUTE ADVERTISEMENT BY MANAGED GATEWAYS 有权
标题翻译：管理网关的路由广告
公开(公告)号：US20150263946A1
公开(公告)日：2015-09-17
申请号：US14214561
申请日：2014-03-14
申请人： Nicira, Inc.
发明人： Ariel Tubaltsev , Ronghua Zhang , Benjamin C. Basler , Serge Maskalik , Rajiv Ramanathan , David J. Leroy , Srinivas Neginhal , Kai-Wei Fan , Ansis Atteka
IPC分类号： H04L12/741 , H04L12/713 , H04L12/931
CPC分类号： H04L45/74 , H04L45/02 , H04L45/586 , H04L49/354
摘要： Some embodiments provide a network system. The network system includes a first set of host machines for hosting virtual machines that connect to each other through a logical network. The first set of host machines includes managed forwarding elements for forwarding data between the host machines. The network system includes a second set of host machines for hosting virtualized containers that operate as gateways for forwarding data between the virtual machines and an external network. At least one of the virtualized containers peers with at least one physical router in the external network in order to advertise addresses of the virtual machines to the physical router.
摘要翻译：一些实施例提供网络系统。网络系统包括用于托管通过逻辑网络彼此连接的虚拟机的第一组主机。第一组主机包括用于在主机之间转发数据的托管转发元件。网络系统包括用于托管虚拟化容器的第二组主机，其作为用于在虚拟机和外部网络之间转发数据的网关。至少一个虚拟化容器与外部网络中的至少一个物理路由器对等，以便将虚拟机的地址通告给物理路由器。

8. 发明申请

US20200169503A1 ROUTE ADVERTISEMENT BY MANAGED GATEWAYS 审中-公开
公开(公告)号：US20200169503A1
公开(公告)日：2020-05-28
申请号：US16776157
申请日：2020-01-29
申请人： Nicira, Inc.
发明人： Ariel Tubaltsev , Ronghua Zhang , Benjamin C Basler , Serge Maskalik , Rajiv Ramanathan , David J Leroy , Srinivas Neginhal , Kai-Wei Fan , Ansis Atteka
IPC分类号： H04L12/741 , H04L12/751 , H04L12/713 , H04L12/931
摘要： Some embodiments provide a network system. The network system includes a first set of host machines for hosting virtual machines that connect to each other through a logical network. The first set of host machines includes managed forwarding elements for forwarding data between the host machines. The network system includes a second set of host machines for hosting virtualized containers that operate as gateways for forwarding data between the virtual machines and an external network. At least one of the virtualized containers peers with at least one physical router in the external network in order to advertise addresses of the virtual machines to the physical router.

9. 发明申请

US20190334767A1 MULTIPLE LEVELS OF LOGICAL ROUTERS 审中-公开
公开(公告)号：US20190334767A1
公开(公告)日：2019-10-31
申请号：US16506782
申请日：2019-07-09
申请人： Nicira, Inc.
发明人： Srinivas Neginhal , Ronghua Zhang
IPC分类号： H04L12/24 , H04L29/06 , H04L12/46 , H04L12/28 , H04L12/713 , H04L12/721 , H04L12/741 , H04L12/931
摘要： Some embodiments provide a managed network for implementing a logical network for a tenant. The managed network includes a first set of host machines and a second set of host machines. The first set of host machines is for hosting virtual machines (VMs) for the logical network. Each of the first set of host machines operates a managed forwarding element that implements a first logical router for the tenant logical network and a second logical router to which the first logical router connects. The implementation of the second logical router is for processing packets entering and exiting the tenant logical network. The second set of host machines is for hosting L3 gateways for the second logical router. The L3 gateways connect the tenant logical network to at least one external network.

10. 发明授权

US09967134B2 Reduction of network churn based on differences in input state 有权
公开(公告)号：US09967134B2
公开(公告)日：2018-05-08
申请号：US14814215
申请日：2015-07-30
申请人： Nicira, Inc.
发明人： Amre Shakimov , Srinivas Neginhal , Anupam Chanda , Su Wang , Pankaj Thakkar
IPC分类号： H04J1/16 , H04L12/24 , H04L29/14 , H04L12/751 , H04L12/703 , H04L12/721 , H04L12/713
CPC分类号： H04L41/0668 , H04L41/0695 , H04L43/0811 , H04L45/02 , H04L45/28 , H04L45/38 , H04L45/586 , H04L69/40
摘要： Some embodiments provide a network control system with techniques for handling failover of network controllers with minimal churn in the network state distributed to the forwarding elements of the network. Specifically, in some embodiments, the local controller designates a waiting period before computing output network state data entries based on the new version of the input network state data entries. Alternatively, or conjunctively, the local controller of some embodiments calculates the changes between the new version of input state data entries and its stored existing version of the input state data entries, and only generates new output network state data entries based on the calculated changes, in order to minimize unnecessary recalculations of the output network state data entries. The new output network state data entries may then be used by the local controller to provision its managed forwarding element.

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