公开(公告)号：US11695665B2

公开(公告)日：2023-07-04

申请号：US16550311

申请日：2019-08-26

Applicant: VMware, Inc.

Inventor： Qiao Huang ,  Donghai Han ,  Qiong Wang ,  Xu Wang ,  Xinghua Hu ,  Yuping Wei

IPC: H04L43/065 ,  H04L41/046 ,  H04L43/0811 ,  H04L43/10

CPC classification number: H04L43/065 ,  H04L41/046 ,  H04L43/0811 ,  H04L43/10

Abstract: Example methods and systems are provided for cross-cloud connectivity checks. One example method may include detecting a first connectivity check packet that is addressed from a first virtualized computing instance deployed in a first cloud environment; and determining that the first connectivity check packet is destined for a second virtualized computing instance in a second cloud environment reachable via the network device. The method may also comprise: generating a second connectivity check packet by modifying the first connectivity check packet to include one or more indicators that a connectivity check is required along a datapath towards the second virtualized computing instance in the second cloud environment. The method may further comprise: sending the second connectivity check packet to cause one or more observation points along the datapath to, based on the one or more indicators, generate and send report information associated with the second connectivity packet.

公开(公告)号：US11252070B2

公开(公告)日：2022-02-15

申请号：US16154729

申请日：2018-10-09

Applicant: VMware, Inc.

Inventor： Dexiang Wang ,  Yong Wang ,  Peng Li ,  Sreeram Ravinoothala ,  Xinghua Hu

IPC: H04L12/26 ,  H04L12/931 ,  G06F9/455 ,  H04L12/715

Abstract: Example methods are provided for a network device to perform adaptive polling in a software-defined networking (SDN) environment. One example method may comprise: operating in a polling mode at a current polling round to detect zero or more packets that require packet processing by the network device. The method may also comprise: determining packet characteristic information associated with multiple polling rounds that include the current polling round and one or more previous polling rounds; and based on the packet characteristic information, determining whether a resource performance condition associated with the network device is satisfied. In response to determination that the resource performance condition is satisfied, the network device may operate in the polling mode at a subsequent polling round; but otherwise, switch from the polling mode to an interrupt mode.

公开(公告)号：US11700166B2

公开(公告)日：2023-07-11

申请号：US17107170

申请日：2020-11-30

Applicant: VMware, Inc.

Inventor： Xinhua Hong ,  Dexiang Wang ,  Sharath Bhat ,  Xinghua Hu ,  Jia Yu

IPC: H04L41/0668 ,  H04L43/0817 ,  H04L12/18 ,  H04L12/46

CPC classification number: H04L41/0668 ,  H04L12/1868 ,  H04L12/4679 ,  H04L43/0817

Abstract: In an embodiment, a computer-implemented method for a MAC addresses synchronization mechanism for a bridge port failover is disclosed. In an embodiment, the method comprises: upon detecting a failover of a previously active bridge node, a standby bridge node performing: detecting a failover of a previously active bridge node; sending a request to one or more hosts to cause the one or more hosts to remove, from one or more corresponding forwarding tables, one or more MAC addresses, of one or more virtual machines, that the one or more hosts learned based on communications tunnels established with the previously active bridge node; for each MAC address stored in a MAC-SYNC table maintained by the standby bridge node: generating a first-type reverse address resolution protocol (“RARP”) packet having a source MAC address retrieved from the MAC-SYNC table; broadcasting the first RARP message to a virtual extensible LAN (“VXLAN”) switch via a bridge port of the VXLAN switch for the VXLAN switch to register the MAC address on the bridge port; storing an association of the MAC address and an identifier of the bridge port in a forwarding table maintained by the standby bridge node; for each MAC address that is stored in the forwarding table, but not in the MAC-SYNC table: generating a second-type RARP packet with such a MAC address to be the source MAC address; broadcasting the second RARP message from the VXLAN switch to a VLAN switch causing a physical switch to update a forwarding table maintained by the physical switch; and starting to forward traffic, via the bridge port, as an active bridge node.

公开(公告)号：US10855519B2

公开(公告)日：2020-12-01

申请号：US16212379

申请日：2018-12-06

Applicant: VMware, Inc.

Inventor： Xinhua Hong ,  Dexiang Wang ,  Sharath Bhat ,  Xinghua Hu ,  Jia Yu

IPC: H04L12/24 ,  H04L12/26 ,  H04L12/18 ,  H04L12/46

Abstract: A computer-implemented method for a media access control (MAC) address synchronization mechanism for a bridge port failover is disclosed. The method comprises: detecting a failover of a previously active bridge node; for each MAC address stored in a MAC-SYNC table: generating a first reverse address resolution protocol (“RARP”) packet having a source MAC address; broadcasting the first RARP message to a virtual extensible LAN (“VXLAN”) switch via a bridge port to register the source MAC address on the bridge port; and storing an association of the MAC address and an identifier of the bridge port in a forwarding table; for each MAC address stored in the forwarding table but not stored in the MAC-SYNC table: generating a second RARP packet with a MAC address to be the source MAC address; causing a physical switch to update a forwarding table maintained by the physical switch; and forwarding traffic via the bridge port.