Patents by Inventor Da WAN
Da WAN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20180302314Abstract: Example methods are provided for assigning a routing domain identifier in a logical network environment that includes one or more logical distributed routers and one or more logical switches. In one example, the method may comprise obtaining network topology information specifying how the one or more logical distributed routers are connected with the one or more logical switches; and selecting, from the one or more logical switches, a particular logical switch for which routing domain identifier assignment is required. The method may also comprise: identifying a particular logical distributed router that is connected with the particular logical switch based on the network topology information; assigning the particular logical switch with the routing domain identifier that is associated with the particular logical distributed router; and using the routing domain identifier in a communication between a management entity and a host.Type: ApplicationFiled: April 12, 2017Publication date: October 18, 2018Applicant: Nicira, Inc.Inventors: Da WAN, Pankaj THAKKAR, Anupam CHANDA, Jianjun SHEN, Anuprem CHALVADI, Caixia JIANG, Hua WANG, Donghai HAN
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Patent number: 10050850Abstract: A method receives physical location information for racks in which application running environments are located. Each rack includes multiple host computing devices in a cluster of host computing devices. Application running environment-rack associations are generated using the physical location information for the cluster where an application running environment-rack association maps an application running environment to a rack. The application running environment-rack associations are provided to the cluster. Then, the method provides a data set for storing in the cluster of hosts where the data set is associated with a placement strategy. The cluster uses the placement strategy to store a data block in the data set for a first application running environment and store a replica data block for a second application running environment at a location in the cluster based on the first application running environment being associated with a first rack from the application running environment-rack associations.Type: GrantFiled: January 14, 2016Date of Patent: August 14, 2018Assignee: VMWARE, INC.Inventors: Junping Du, Ying He, Da Wan, Jun Xiao
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Publication number: 20180159696Abstract: 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.Type: ApplicationFiled: January 31, 2018Publication date: June 7, 2018Inventors: Jianjun Shen, IV, Alexander Tessmer, Ram Dular Singh, Hua Wang, Da Wan
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Publication number: 20180123877Abstract: Certain embodiments described herein are generally directed to determining the spans of logical entities in a logical network using a graph theoretic method. For example, in some embodiments, a configuration of the logical network is represented as a directed graph with labeled edges. The span of any logical entity in the logical network may then be computed based on the directed graph of the logical network. For example, for a given entity represented by a given node, the set of nodes that can be reached from the given node via span-depends-on edges only may be computed and referred to as the span base of the given node. Further, the set of all managed forwarding elements reachable from each node of the span base of the given node via contains edges only is the span for the given entity.Type: ApplicationFiled: November 3, 2016Publication date: May 3, 2018Inventors: Aayush SAXENA, Igor GANICHEV, Da WAN, Pankaj THAKKAR, Yang PING
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Patent number: 9887851Abstract: 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.Type: GrantFiled: August 9, 2016Date of Patent: February 6, 2018Assignee: NICIRA, INC.Inventors: Jianjun Shen, IV, Alexander Tessmer, Ram Dular Singh, Hua Wang, Da Wan
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Publication number: 20170220697Abstract: A method of determining the span of logical entities in a network is provided. The method generates a directed graph. Each node of the graph corresponds to a logical network entity. Each edge of the graph has one or two directions. A direction from a first node to a second node identifies the first node as the source of span for the second node. The method determines the span of each node based on the direction of the edges of the directed graph. The method groups each set of nodes that are accessible by all other nodes in the set in a strongly connected group (SCC) sub-graph. The method generates a group node in a directed acyclic graph (DAG) to correspond to each SCC sub-graph in the directed graph. The method assigns the span of each SCC to the corresponding group node of the DAG.Type: ApplicationFiled: January 29, 2016Publication date: August 3, 2017Inventors: Da Wan, Jianjun Shen, Maxim Novikov, Donghai Han, Hua Wang
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Publication number: 20160352531Abstract: 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.Type: ApplicationFiled: August 9, 2016Publication date: December 1, 2016Inventors: Jianjun Shen, IV, Alexander Tessmer, Ram Dular Singh, Hua Wang, Da Wan
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Patent number: 9432204Abstract: 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.Type: GrantFiled: September 6, 2013Date of Patent: August 30, 2016Assignee: NICIRA, INC.Inventors: Jianjun Shen, Alexander Tessmer, Ram Dular Singh, Hua Wang, Da Wan
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Publication number: 20160127206Abstract: A method receives physical location information for racks in which application running environments are located. Each rack includes multiple host computing devices in a cluster of host computing devices. Application running environment-rack associations are generated using the physical location information for the cluster where an application running environment-rack association maps an application running environment to a rack. The application running environment-rack associations are provided to the cluster. Then, the method provides a data set for storing in the cluster of hosts where the data set is associated with a placement strategy. The cluster uses the placement strategy to store a data block in the data set for a first application running environment and store a replica data block for a second application running environment at a location in the cluster based on the first application running environment being associated with a first rack from the application running environment-rack associations.Type: ApplicationFiled: January 14, 2016Publication date: May 5, 2016Inventors: Junping Du, Ying He, Da Wan, Jun Xiao
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Patent number: 9268590Abstract: Embodiments perform automated provisioning of a cluster for a distributed computing platform. Target host computing devices are selected from a plurality of host computing devices based on configuration information, such as a desired cluster size, a data set, code for processing the data set and, optionally, a placement strategy. One or more virtual machines (VMs) are instantiated on each target host computing device. Each VM is configured to access a virtual disk that is preconfigured with code for executing functionality of the distributed computing platform and serves as a node of the cluster. The data set is stored in a distributed file system accessible by at least a subset of the VMs. The code for processing the data set is provided to at least a subset of the VMs, and execution of the code is initiated to obtain processing results.Type: GrantFiled: February 29, 2012Date of Patent: February 23, 2016Assignee: VMware, Inc.Inventors: Junping Du, Ying He, Da Wan, Jun Xiao
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Publication number: 20150055651Abstract: 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.Type: ApplicationFiled: September 6, 2013Publication date: February 26, 2015Applicant: VMware, Inc.Inventors: Jianjun Shen, Alexander Tessmer, Ram Dular Singh, Hua Wang, Da Wan
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Publication number: 20130227558Abstract: Embodiments perform automated provisioning of a cluster for a distributed computing platform. Target host computing devices are selected from a plurality of host computing devices based on configuration information, such as a desired cluster size, a data set, code for processing the data set and, optionally, a placement strategy. One or more virtual machines (VMs) are instantiated on each target host computing device. Each VM is configured to access a virtual disk that is preconfigured with code for executing functionality of the distributed computing platform and serves as a node of the cluster. The data set is stored in a distributed file system accessible by at least a subset of the VMs. The code for processing the data set is provided to at least a subset of the VMs, and execution of the code is initiated to obtain processing results.Type: ApplicationFiled: February 29, 2012Publication date: August 29, 2013Applicant: VMWARE, INC.Inventors: Junping DU, Ying HE, Da WAN, Jun XIAO