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1. 发明授权

US11736394B2 Address resolution using multiple designated instances of a logical router 有权
公开(公告)号：US11736394B2
公开(公告)日：2023-08-22
申请号：US17524979
申请日：2021-11-12
申请人： Nicira, Inc.
发明人： Vivek Agarwal , Ganesan Chandrashekhar , Rahul Korivi Subramaniyam , Ram Dular Singh , Howard Wang
IPC分类号： H04L45/586 , H04L45/741 , H04L45/64 , H04L61/2596 , H04L49/00 , H04L67/10
CPC分类号： H04L45/586 , H04L45/64 , H04L45/741 , H04L49/70 , H04L61/2596 , H04L67/10
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.

2. 发明申请

US20200296038A1 INTERMEDIATE LOGICAL INTERFACES IN A VIRTUAL DISTRIBUTED ROUTER ENVIRONMENT 审中-公开
公开(公告)号：US20200296038A1
公开(公告)日：2020-09-17
申请号：US16888860
申请日：2020-06-01
申请人： Nicira, Inc.
发明人： Vivek Agarwal , Ganesan Chandrashekhar , Rahul Korivi Subramaniyam , Howard Wang , Ram Dular Singh
IPC分类号： H04L12/741 , G06F9/455 , H04L12/721 , H04L12/46 , H04L12/715 , H04L12/713 , H04L12/801 , H04L29/08 , H04L12/24
摘要： A LRE (logical routing element) that have LIFs that are active in all host machines spanned by the LRE as well as LIFs that are active in only a subset of those spanned host machines is provided. A host machine having an active LIF for a particular L2 segment would perform the L3 routing operations for network traffic related to that L2 segment. A host machine having an inactive LIF for the particular L2 segment would not perform L3 routing operations for the network traffic of the L2 segment.

3. 发明申请

US20200067730A1 VIRTUAL DISTRIBUTED BRIDGING 审中-公开
公开(公告)号：US20200067730A1
公开(公告)日：2020-02-27
申请号：US16671225
申请日：2019-11-01
申请人： Nicira, Inc.
发明人： Rahul Korivi Subramaniyam , Howard Wang , Ganesan Chandrashekhar , Vivek Agarwal , Ram Dular Singh
IPC分类号： H04L12/46
摘要： Virtualization software that includes a VDRB (virtual distributed router/bridge) module for performing L3 routing and/or bridging operations is provided. At least some of the VDRBs are configured as VDBs (virtual distributed bridge) for performing bridging operations between different network segments in a distributed manner. The bridging tasks of a network are partitioned among several VDBs of the network based on MAC addresses. MAC addresses of VMs or other types of network nodes belonging to an overlay logical network are partitioned into several shards, each shard of MAC addresses assigned to a VDB in the network. Each VDB assigned a shard of MAC addresses performs bridging when it receives a packet bearing a MAC address belonging to its assigned shard. A VDB does not perform bridging on packets that do not have MAC address that falls within the VDB's shard of MAC addresses.

4. 发明授权

US09768980B2 Virtual distributed bridging 有权
公开(公告)号：US09768980B2
公开(公告)日：2017-09-19
申请号：US14503164
申请日：2014-09-30
申请人： Nicira, Inc.
发明人： Rahul Korivi Subramaniyam , Howard Wang , Ganesan Chandrashekhar , Vivek Agarwal , Ram Dular Singh
IPC分类号： H04L12/28 , H04L12/46
CPC分类号： H04L12/4625 , H04L12/462 , H04L12/4641
摘要： Virtualization software that includes a VDRB (virtual distributed router/bridge) module for performing L3 routing and/or bridging operations is provided. At least some of the VDRBs are configured as VDBs (virtual distributed bridge) for performing bridging operations between different network segments in a distributed manner. The bridging tasks of a network are partitioned among several VDBs of the network based on MAC addresses. MAC addresses of VMs or other types of network nodes belonging to an overlay logical network are partitioned into several shards, each shard of MAC addresses assigned to a VDB in the network. Each VDB assigned a shard of MAC addresses performs bridging when it receives a packet bearing a MAC address belonging to its assigned shard. A VDB does not perform bridging on packets that do not have MAC address that falls within the VDB's shard of MAC addresses.

5. 发明授权

US09602385B2 Connectivity segment selection 有权
公开(公告)号：US09602385B2
公开(公告)日：2017-03-21
申请号：US14133528
申请日：2013-12-18
申请人： Nicira, Inc.
发明人： Alexander Tessmer , Jianjun Shen , Hua Wang , Rahul Korivi Subramaniyam
IPC分类号： H04L12/751 , H04L12/46 , H04L12/18
CPC分类号： H04L45/02 , H04L12/1886 , H04L12/462 , H04L12/4633 , H04L12/4641
摘要： A novel method for fully utilizing the multicast or broadcast capability of a physical network is provided. The method identifies segments of the network within which broadcast traffic, multicast traffic, or traffic to unknown recipients (BUM traffic) is allowed or enabled. The identified segment encompasses parts of the network that the BUM traffic is able reach while excluding parts of the network nodes that the BUM traffic is unable to reach. Each identified segment includes network nodes that are interconnected by physical network hardware that supports BUM traffic. The method identifies multiple BUM traffic segments in a given network that each supports its own BUM traffic. The different BUM traffic segments are interconnected by physical network hardware that does not support BUM network traffic. Each identified segment is assigned an identifier that uniquely distinguishes the identified segment from other identified segments.

6. 发明申请

US20170005942A1 INTERMEDIATE LOGICAL INTERFACES IN A VIRTUAL DISTRIBUTED ROUTER ENVIRONMENT 审中-公开
标题翻译：虚拟分布式路由器环境中的中间逻辑接口
公开(公告)号：US20170005942A1
公开(公告)日：2017-01-05
申请号：US14840228
申请日：2015-08-31
申请人： Nicira, Inc.
发明人： Vivek Agarwal , Ganesan Chandrashekhar , Rahul Korivi Subramaniyam , Howard Wang , Ram Dular Singh
IPC分类号： H04L12/801 , H04L12/713 , H04L29/08 , H04L12/721
CPC分类号： H04L45/74 , G06F9/45558 , G06F2009/45595 , H04L12/4641 , H04L41/0893 , H04L45/04 , H04L45/38 , H04L45/44 , H04L45/586 , H04L45/66 , H04L47/33 , H04L49/70 , H04L69/325
摘要： A LRE (logical routing element) that have LIFs that are active in all host machines spanned by the LRE as well as LIFs that are active in only a subset of those spanned host machines is provided. A host machine having an active LIF for a particular L2 segment would perform the L3 routing operations for network traffic related to that L2 segment. A host machine having an inactive LIF for the particular L2 segment would not perform L3 routing operations for the network traffic of the L2 segment.
摘要翻译：提供了LRE（逻辑路由元素），其具有在由LRE跨越的所有主机中活动的LIF以及仅在这些跨越主机的一部分中活动的LIF。具有用于特定L2段的活动LIF的主机将对与该L2段相关的网络流量执行L3路由操作。具有用于特定L2段的无效LIF的主机将不对L2段的网络业务执行L3路由操作。

7. 发明申请

US20150281042A1 ADDRESS RESOLUTION USING MULTIPLE DESIGNATED INSTANCES OF A LOGICAL ROUTER 有权
标题翻译：使用多个指定的逻辑路由器的地址解析
公开(公告)号：US20150281042A1
公开(公告)日：2015-10-01
申请号：US14227964
申请日：2014-03-27
申请人： Nicira, Inc.
发明人： Vivek Agarwal , Ganesan Chandrashekhar , Rahul Korivi Subramaniyam , Ram Dular Singh , Howard Wang
IPC分类号： H04L12/721
CPC分类号： H04L45/586 , H04L45/741 , H04L49/70 , H04L61/2596
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中选择，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。

8. 发明申请

US20150103843A1 Configuration of Logical Router 有权
标题翻译：逻辑路由器配置
公开(公告)号：US20150103843A1
公开(公告)日：2015-04-16
申请号：US14137877
申请日：2013-12-20
申请人： Nicira, Inc.
发明人： Ganesan Chandrashekhar , Rahul Korivi Subramaniyam , Ram Dular Singh , Vivek Agarwal , Howard Wang
IPC分类号： H04L12/721 , H04L12/56
CPC分类号： G06F9/455 , G06F9/45558 , G06F2009/45595 , H04L45/44 , H04L45/741 , H04L61/103
摘要： Some embodiments provide a method of operating several logical networks over a network virtualization infrastructure. The method defines a managed physical switching element (MPSE) that includes several ports for forwarding packets to and from a plurality of virtual machines. Each port is associated with a unique media access control (MAC) address. The method defines several managed physical routing elements (MPREs) for the several different logical networks. Each MPRE is for receiving data packets from a same port of the MPSE. Each MPRE is defined for a different logical network and for routing data packets between different segments of the logical network. The method provides the defined MPSE and the defined plurality of MPREs to a plurality of host machines as configuration data.
摘要翻译：一些实施例提供了一种通过网络虚拟化基础设施操作多个逻辑网络的方法。该方法定义了一个受管理的物理交换元件（MPSE），该物理交换元件包括若干端口，用于将数据包转发到多个虚拟机。每个端口与唯一的媒体访问控制（MAC）地址相关联。该方法为几个不同的逻辑网络定义了几个受管理的物理路由元素（MPRE）。每个MPRE用于从MPSE的同一端口接收数据包。为不同的逻辑网络定义每个MPRE，并且用于在逻辑网络的不同段之间路由数据包。该方法将定义的MPSE和定义的多个MPRE提供给多个主机作为配置数据。

9. 发明公开

US20230396540A1 ADDRESS RESOLUTION USING MULTIPLE DESIGNATED INSTANCES OF A LOGICAL ROUTER 审中-公开
公开(公告)号：US20230396540A1
公开(公告)日：2023-12-07
申请号：US18235859
申请日：2023-08-20
申请人： Nicira, Inc.
发明人： Vivek Agarwal , Ganesan Chandrashekhar , Rahul Korivi Subramaniyam , Ram Dular Singh , Howard Wang
IPC分类号： H04L45/586 , H04L45/741 , H04L45/64
CPC分类号： H04L45/586 , H04L45/741 , H04L45/64 , H04L61/2596
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.

10. 发明授权

US11799775B2 Intermediate logical interfaces in a virtual distributed router environment 有权
公开(公告)号：US11799775B2
公开(公告)日：2023-10-24
申请号：US17361284
申请日：2021-06-28
申请人： Nicira, Inc.
发明人： Vivek Agarwal , Ganesan Chandrashekhar , Rahul Korivi Subramaniyam , Howard Wang , Ram Dular Singh
IPC分类号： H04L12/741 , H04L45/74 , G06F9/455 , H04L45/00 , H04L12/46 , H04L45/02 , H04L45/586 , H04L47/33 , H04L69/325 , H04L41/0893 , H04L45/44 , H04L49/00
CPC分类号： H04L45/74 , G06F9/45558 , H04L12/4641 , H04L41/0893 , H04L45/04 , H04L45/38 , H04L45/44 , H04L45/586 , H04L45/66 , H04L47/33 , H04L69/325 , G06F2009/45595 , H04L49/70
摘要： A LRE (logical routing element) that have LIFs that are active in all host machines spanned by the LRE as well as LIFs that are active in only a subset of those spanned host machines is provided. A host machine having an active LIF for a particular L2 segment would perform the L3 routing operations for network traffic related to that L2 segment. A host machine having an inactive LIF for the particular L2 segment would not perform L3 routing operations for the network traffic of the L2 segment.

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