公开(公告)号：US12073240B2

公开(公告)日：2024-08-27

申请号：US17341317

申请日：2021-06-07

Applicant: Nicira, Inc.

Inventor： Ganesan Chandrashekhar ,  Rahul Korivi Subramaniyam ,  Ram Dular Singh ,  Vivek Agarwal ,  Howard Wang

IPC: G06F9/455 ,  H04L45/44 ,  H04L45/741 ,  H04L61/103

CPC classification number: G06F9/455 ,  G06F9/45558 ,  H04L45/44 ,  H04L45/741 ,  H04L61/103 ,  G06F2009/45595

Abstract: 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 metho 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.

公开(公告)号：US11190443B2

公开(公告)日：2021-11-30

申请号：US15891285

申请日：2018-02-07

Applicant: Nicira, Inc.

Inventor： Vivek Agarwal ,  Ganesan Chandrashekhar ,  Rahul Korivi Subramaniyam ,  Ram Dular Singh ,  Howard Wang

IPC: H04L12/713 ,  H04L12/749 ,  H04L12/715 ,  H04L29/12 ,  H04L12/931 ,  H04L29/08

Abstract: 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.

公开(公告)号：US20210294622A1

公开(公告)日：2021-09-23

申请号：US17341317

申请日：2021-06-07

Applicant: Nicira, Inc.

Inventor： Ganesan Chandrashekhar ,  Rahul Korivi Subramaniyam ,  Ram Dular Singh ,  Vivek Agarwal ,  Howard Wang

IPC: G06F9/455 ,  H04L12/749 ,  H04L29/12 ,  H04L12/721

Abstract: 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 metho 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.

公开(公告)号：US10999087B2

公开(公告)日：2021-05-04

申请号：US16416214

申请日：2019-05-18

Applicant: Nicira, Inc.

Inventor： Alexander Tessmer ,  Mukesh Hira ,  Rajiv Krishnamurthy ,  Ram Dular Singh ,  Xuan Zhang ,  Hua Wang

IPC: H04L12/18 ,  H04L12/46

Abstract: A novel method for performing replication of messages in a network that bridges one or more physical networks to an overlay logical network is provided. A physical gateway provides bridging between network nodes of a physical network and virtual machines in the overlay logical network by serving as an endpoint of the overlay logical network. The physical gateway does not replicate messages from the bridged physical network to destination endpoints in the overlay logical network directly, but instead tunnels the message-to-be-replicated to a designated tunnel endpoint in the overlay logical network. The designated tunnel endpoint in turn replicates the message that was tunneled to it to other endpoints in the overlay logical network.

公开(公告)号：US10693783B2

公开(公告)日：2020-06-23

申请号：US16421446

申请日：2019-05-23

Applicant: Nicira, Inc.

Inventor： Vivek Agarwal ,  Ganesan Chandrashekhar ,  Rahul Korivi Subramaniyam ,  Howard Wang ,  Ram Dular Singh

IPC: H04L12/741 ,  G06F9/455 ,  H04L12/721 ,  H04L12/46 ,  H04L12/715 ,  H04L12/713 ,  H04L12/801 ,  H04L29/08 ,  H04L12/24 ,  H04L12/931

Abstract: 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.

公开(公告)号：US10333727B2

公开(公告)日：2019-06-25

申请号：US15726335

申请日：2017-10-05

Applicant: Nicira, Inc.

Inventor： Alexander Tessmer ,  Mukesh Hira ,  Rajiv Krishnamurthy ,  Ram Dular Singh ,  Xuan Zhang ,  Hua Wang

IPC: H04L12/18 ,  H04L12/741 ,  H04L12/46

Abstract: A novel method for performing replication of messages in a network that bridges one or more physical networks to an overlay logical network is provided. A physical gateway provides bridging between network nodes of a physical network and virtual machines in the overlay logical network by serving as an endpoint of the overlay logical network. The physical gateway does not replicate messages from the bridged physical network to destination endpoints in the overlay logical network directly, but instead tunnels the message-to-be-replicated to a designated tunnel endpoint in the overlay logical network. The designated tunnel endpoint in turn replicates the message that was tunneled to it to other endpoints in the overlay logical network.

公开(公告)号：US10020960B2

公开(公告)日：2018-07-10

申请号：US14503177

申请日：2014-09-30

Applicant: Nicira, Inc.

Inventor： Howard Wang ,  Rahul Korivi Subramaniyam ,  Ganesan Chandrashekhar ,  Vivek Agarwal ,  Ram Dular Singh

IPC: H04L12/46

CPC classification number: H04L12/4625 ,  H04L12/4633 ,  H04L12/4641 ,  H04L2012/4629

Abstract: 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.

公开(公告)号：US20180159696A1

公开(公告)日：2018-06-07

申请号：US15885749

申请日：2018-01-31

Applicant: Nicira, Inc.

Inventor： Jianjun Shen, IV ,  Alexander Tessmer ,  Ram Dular Singh ,  Hua Wang ,  Da Wan

IPC: H04L12/18 ,  H04L12/46 ,  H04L12/761

CPC classification number: H04L12/1886 ,  H04L12/185 ,  H04L12/1854 ,  H04L12/46 ,  H04L12/4641 ,  H04L45/16

Abstract: A novel method of conducting multicast traffic in a network is provided. The network includes multiple endpoints that receive messages from the network and generate messages for the network. The endpoints are located in different segments of the network, each segment including one or more of the endpoints. For a source endpoint to replicate a particular message (e.g., a data packet) for all endpoints belonging to a particular replication group (i.e., multicast group) within the network, the source endpoint replicates the particular message to each endpoint within the source endpoint's own segment and to a proxy endpoint in each of the other segments. Each proxy endpoint in turn replicates the particular message to all endpoints belonging to the particular replication group within the proxy endpoint's own segment.

公开(公告)号：US09977685B2

公开(公告)日：2018-05-22

申请号：US14137877

申请日：2013-12-20

Applicant: Nicira, Inc.

Inventor： Ganesan Chandrashekhar ,  Rahul Korivi Subramaniyam ,  Ram Dular Singh ,  Vivek Agarwal ,  Howard Wang

IPC: H04L12/26 ,  G06F9/455 ,  H04L12/749 ,  H04L29/12 ,  H04L12/721

CPC classification number: G06F9/455 ,  G06F9/45558 ,  G06F2009/45595 ,  H04L45/44 ,  H04L45/741 ,  H04L61/103

Abstract: 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.

公开(公告)号：US09910686B2

公开(公告)日：2018-03-06

申请号：US14137869

申请日：2013-12-20

Applicant: Nicira, Inc.

Inventor： Ganesan Chandrashekhar ,  Rahul Korivi Subramaniyam ,  Ram Dular Singh ,  Vivek Agarwal ,  Howard Wang

IPC: H04J3/24 ,  G06F9/455 ,  H04L12/749 ,  H04L29/12 ,  H04L12/721

CPC classification number: G06F9/455 ,  G06F9/45558 ,  G06F2009/45595 ,  H04L45/44 ,  H04L45/741 ,  H04L61/103

Abstract: Some embodiments provide a system that includes a first set of virtual machines belonging to a first overlay network and a second set of virtual machines belonging to a second overlay network. The first and second sets of virtual machines operate in several host machines, each of which includes a managed physical routing element (MPRE) for routing data packet between virtual machines in different overlay networks. A particular MPRE is configured as a bridge for routing packets between virtual machines that are in different overlay networks but in a same IP (internet protocol) subnet.