Vmware, Inc.

Nicira, Inc.

Dongping Chen

Bo Lin

Yi Zeng

Xiao Bi Liang

Wei Wang

Jingchun Jason Jiang

Liang Cui

Hailing Xu

Xinyu He

Dahui Yuan

Donghai Han

Qi Wu

Shadab Shah

Ansis Atteka

Michael M Hu

Xinyang Liu

An example method of distributed load balancing in a virtualized computing system includes: configuring, at a logical load balancer, a traffic detector to detect traffic to a virtual internet protocol address (VIP) of an application having a plurality of instances; detecting, at the traffic detector, a first request to the VIP from a client executing in a virtual machine (VM) supported by a hypervisor executing on a first host; sending, by a configuration distributor of the logical load balancer in response to the detecting, a load balancer configuration to a configuration receiver of a local load balancer executing in the hypervisor for configuring the local load balancer to perform load balancing for the VIP at the hypervisor using the load balancer configuration.

Deploying a distributed load balancer in a virtualized computing system

Example methods and systems for validation-based service request handling are described. In one example, a computer system may obtain, from a management entity, configuration information specifying a unicast service address associated with a service node capable of providing a network service. In response to detecting a service request from the virtualized computing instance, the computer system may generate a modified service request that (a) is destined for the unicast service address and (b) includes a validation identifier (ID) associated with the virtualized computing instance. The modified service request may be forwarded towards the service node to cause the service node to perform validation based on the validation ID to determine whether to provide the network service. In response to detecting a service response from the service node, the service response, or a modified service response, may be forwarded towards the virtualized computing instance.

Validation-based service request handling

Example methods and systems for service request handling with protocol translation are described. In one example, in response to intercepting a service request from a virtualized computing instance, a computer system may generate and send a translated service request towards a service node. The translated service request may be generated by performing a first translation of the service request from a service protocol to a data exchange protocol supported by both a client node running on the computer system and a service node. In response to receiving the service response that is generated according to the data exchange protocol from the service node, the computer system may generate and send a translated service response towards the virtualized computing instance. The translated service response may be generated by performing a second translation of the service response from the data exchange protocol to the service protocol.

Service request handling with protocol translation

Systems and methods described herein provide a high availability DHCP server capable of serving multiple tenants in a data center. The DHCP server may use a different logical DHCP server instance for each tenant, and may be implemented as one process without the use of namespaces. A DHCP server is executed on a gateway virtual machine (VM) that is capable of hosting a plurality of logical DHCP servers. For each tenant in a data center, a logical network and a corresponding logical DHCP server instance are implemented. The DHCP server may service requests for DHCP services from VMs via their physical host by determining the tenant that the VM originates from and leasing a DHCP resource from that tenant's corresponding logical DHCP server instance.

Systems and methods for providing multi-tenant dynamic host configuration protocol services

Example methods and systems for virtual tunnel virtualized computing instance (VTEP) learning based on transport protocol information are described. In one example, a computer system may learn first mapping information and second mapping information. The first mapping information may associate (a) a first VTEP with (b) first transport protocol information and inner address information associated with a first virtualized computing instance. The second mapping information may associate (a) a second VTEP with (b) second transport protocol information and inner address information associated with a second virtualized computing instance. The computer system may detect an egress packet that is addressed to the inner address information. In response to determination that the egress packet specifies the first transport protocol information, a first encapsulated packet may be generated and sent towards the first VTEP. Otherwise, a second encapsulated packet may be generated and sent towards the second VTEP.

Virtual tunnel endpoint (VTEP) learning based on transport protocol information

The disclosure herein describes a system for providing distributed global server load balancing (GSLB) over resources across multiple data centers. The system includes a directory group comprising one or more directory nodes and a plurality of GSLB nodes registered to the directory group. A respective GSLB node is configured to provide GSLB services over a respective portion of the resources. A directory node includes a domain name system (DNS) query-receiving module configured to receive a DNS query from a client, a node-selecting module configured to select from the plurality of GSLB nodes a first GSLB node based at least on the DNS query, and a DNS query-responding module configured to respond to the DNS query to the client using an address of the selected first GSLB node, thereby facilitating the selected first GSLB node in performing GSLB while resolving the DNS query.

Distributed global load-balancing system for software-defined data centers

Growing community of inventors

Beijing, China

Dongping Chen