Patents by Inventor Shunjia Yu

Shunjia Yu 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).

  • Publication number: 20210112000
    Abstract: A packet forwarding network may include spine and leaf switches that forward network traffic between end hosts. The packet forwarding network may be implemented on multiple network racks in a rack-based system. A controller may control the underlying spine and leaf switches to form on-premise virtual private cloud (VPC) resources. In particular, the controller may form enterprise VPC (EVPC) tenants, each having a virtual router that performs routing between different segments within the corresponding EVPC tenant. The different segments may separately include web, application, and database servers, as end hosts. The controller may form a system VPC tenant having a virtual system router that performs routing between different EVPC tenants. A segment in an internal VPC tenant formed by the controller and/or an external VPC tenant formed by the controller may provide external network access for one or more of the EVPC tenants.
    Type: Application
    Filed: July 21, 2020
    Publication date: April 15, 2021
    Inventors: Richard Forster, Kanzhe Jiang, Sudeep Modi, Shunjia Yu, Onkar Bhat, Ganesh Kasinathan, Zhao Dong, Weifan Fu, Jialiu Wang, Saadet Savas, Alan Hase, Alok Gupta, Prashant Gandhi, Chi Chong, Jai Prakash Shukla
  • Publication number: 20210111946
    Abstract: A networking system may include a switch coupled to a computing resource. A resource management system may control the computing resource. A controller may be coupled to the switch. The controller may include a resource management interface that is coupled to the resource management system via a communications link. The resource management interface may receive computing resource information for the computing resource via the communications link. The controller may provide control data to the switch to update a cloud network for the computing resource based on the received computing resource information.
    Type: Application
    Filed: September 16, 2020
    Publication date: April 15, 2021
    Inventors: Shengda Wang, Jialiu Wang, Richard Forster, Weifan Fu, Prashant Gandhi, Kanzhe Jiang, Sudeep Modi, Shunjia Yu
  • Patent number: 10862933
    Abstract: In various example embodiments, a system, a method, and a machine readable medium to manage multicast traffic are disclosed. The system includes a controller server for receiving first multicast group member information and for providing centralized control of a network. The first multicast group member information is received from a first end-host computer and received at the controller server responsive to a first packet forwarding system identifying the first end-host computer is joining a first multicast group on a first virtual network. The controller server generates a first multicast tree and communicates a first network configuration message to at least one packet forwarding system of the first plurality of packet forwarding systems. The first network configuration message includes a packet flow table entry enabling configuration of a flow table to enable communication of multicast traffic for the first multicast group over a portion of the first multicast tree.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: December 8, 2020
    Assignee: Big Switch Networks LLC
    Inventors: Mary Preeti Manohar, Rajneesh Bajpai, Ning Song, Srinivasan Ramasubramanian, Shunjia Yu, Richard Lane, Kiran Gandhi Poola, Kenneth H. Chiang, Robert W. Sherwood
  • Patent number: 10355879
    Abstract: One embodiment of the present invention provides a switch that is a member of a fabric switch. The switch includes a keepalive response module that identifies a keepalive response packet that does not correspond to any keepalive packet previously transmitted by the switch. The switch also includes a switch identifier extraction module that extracts a switch identifier from a payload of the keepalive response packet, where the switch identifier corresponds to another member switch in the fabric switch. The switch further includes a forwarding module that constructs a packet that includes the payload and is destined to the other member switch.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: July 16, 2019
    Assignee: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITED
    Inventors: Amit Kumar Ray, Phanidhar Koganti, Shunjia Yu, Vardarajan Venkatesh
  • Publication number: 20190141099
    Abstract: In various example embodiments, a system, a method, and a machine readable medium to manage multicast traffic are disclosed. The system includes a controller server for receiving first multicast group member information and for providing centralized control of a network. The first multicast group member information is received from a first end-host computer and received at the controller server responsive to a first packet forwarding system identifying the first end-host computer is joining a first multicast group on a first virtual network. The controller server generates a first multicast tree and communicates a first network configuration message to at least one packet forwarding system of the first plurality of packet forwarding systems. The first network configuration message includes a packet flow table entry enabling configuration of a flow table to enable communication of multicast traffic for the first multicast group over a portion of the first multicast tree.
    Type: Application
    Filed: December 28, 2018
    Publication date: May 9, 2019
    Inventors: Mary Preeti Manohar, Rajneesh Bajpai, Ning Song, Srinivasan Ramasubramanian, Shunjia Yu, Richard Lane, Kiran Gandhi Poola, Kenneth H. Chiang, Robert W. Sherwood
  • Patent number: 10264040
    Abstract: In various example embodiments, a system and method for optimizing management of a multicast tree are disclosed. The system receives first multicast group member information, from over a network and via a first packet forwarding system, at a controller server that provides for control of a network comprised of a first virtual local area network including a first packet forwarding system, the first multicast group member information being received by the first packet forwarding system and describing a first end-host computer as joining a first multicast group on the first virtual local area network. The system generates a multicast tree, at the controller server, and communicates a network configuration message to at least one packet forwarding system of a first plurality of packet forwarding systems to enable communication of the multicast traffic for the first multicast group over a portion of the multicast tree.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: April 16, 2019
    Assignee: Big Switch Networks, Inc.
    Inventors: Mary Preeti Manohar, Rajneesh Bajpai, Ning Song, Srinivasan Ramasubramanian, Shunjia Yu, Richard Lane, Kiran Gandhi Poola, Kenneth H. Chiang, Robert W. Sherwood
  • Patent number: 10044568
    Abstract: One embodiment of the present invention provides a switch in a network of interconnected switches. The switch includes a network extension module, which maintains a mapping between a first virtual local area network (VLAN) identifier and a first global VLAN identifier of a network extension group. The network extension group is represented by a range of global VLAN identifiers for a tenant. A global VLAN identifier is persistent in a respective switch of the network and represents a virtual forwarding domain in the network. During operation, the network extension module includes the global VLAN identifier in a packet belonging to the first VLAN.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: August 7, 2018
    Assignee: BROCADE COMMUNICATIONS SYSTEMS LLC
    Inventors: Venkata R. K. Addanki, Mythilikanth Raman, Phanidhar Koganti, Shunjia Yu, Suresh Vobbilisetty
  • Patent number: 10033650
    Abstract: Systems and techniques for processing and/or forwarding packets are described. An ingress switch can use a QoS mapping mechanism to map a first set of Quality of Service (QoS) bits in a packet received from a customer to a second set of QoS bits for use in a Transparent Interconnection of Lots of Links (TRILL) packet which encapsulates the packet. The first set of QoS bits can be different from the second set of QoS bits. The TRILL packet can be processed and/or forwarded in the network based on the second set of QoS bits. At the egress switch, the TRILL packet can be decapsulated and the original packet with the original QoS bits (or QoS bits that are different from the original QoS bits) can be forwarded to the customer's network. In this manner, some embodiments of the present invention can preserve the QoS bits across a TRILL network.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: July 24, 2018
    Assignee: BROCADE COMMUNICATION SYSTEMS LLC
    Inventors: Shunjia Yu, Anoop Ghanwani, Phanidhar Koganti, John Michael Terry, Wing Cheung, Joseph Juh-En Cheng, Surya P. Varanasi
  • Publication number: 20180041555
    Abstract: In various example embodiments, a system and method for optimizing management of a multicast tree are disclosed. The system receives first multicast group member information, from over a network and via a first packet forwarding system, at a controller server that provides for control of a network comprised of a first virtual local area network including a first packet forwarding system, the first multicast group member information being received by the first packet forwarding system and describing a first end-host computer as joining a first multicast group on the first virtual local area network. The system generates a multicast tree, at the controller server, and communicates a network configuration message to at least one packet forwarding system of a first plurality of packet forwarding systems to enable communication of the multicast traffic for the first multicast group over a portion of the multicast tree.
    Type: Application
    Filed: August 3, 2016
    Publication date: February 8, 2018
    Inventors: Mary Preeti Manohar, Rajneesh Bajpai, Ning Song, Srinivasan Ramasubramanian, Shunjia Yu, Richard Lane, Kiran Gandhi Poola, Kenneth H. Chiang, Robert W. Sherwood
  • Publication number: 20180019927
    Abstract: One embodiment of the present invention provides a switch in a network of interconnected switches. The switch includes a network extension module, which maintains a mapping between a first virtual local area network (VLAN) identifier and a first global VLAN identifier of a network extension group. The network extension group is represented by a range of global VLAN identifiers for a tenant. A global VLAN identifier is persistent in a respective switch of the network and represents a virtual forwarding domain in the network. During operation, the network extension module includes the global VLAN identifier in a packet belonging to the first VLAN.
    Type: Application
    Filed: September 28, 2017
    Publication date: January 18, 2018
    Applicant: BROCADE COMMUNICATIONS SYSTEMS, INC.
    Inventors: Venkata R. K. Addanki, Mythilikanth Raman, Phanidhar Koganti, Shunjia Yu, Suresh Vobbilisetty
  • Patent number: 9806949
    Abstract: One embodiment of the present invention provides a switch. The switch includes a fabric switch module and a border module. The fabric switch module maintains a membership in a first fabric switch. The fabric switch includes a plurality of switches and operates as a single logical switch. The border module determines that the egress switch identifier in a first encapsulation header of a first packet is associated with a switch outside of the fabric switch. The first packet is forwardable in the first fabric switch based on the first encapsulation header. In response to the determination, the border module changes the ingress switch identifier in the first encapsulation header of the first packet to a first virtual switch identifier associated with a first virtual switch. This first virtual switch externally represents the first fabric switch.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: October 31, 2017
    Assignee: BROCADE COMMUNICATIONS SYSTEMS, INC.
    Inventors: Venkata R. K. Addanki, Mythilikanth Raman, Shunjia Yu
  • Patent number: 9806906
    Abstract: Methods and techniques for flooding packets on a per-virtual-network basis are described. Some embodiments provide a method (e.g., a switch) which determines an internal virtual network identifier based on one or more fields in a packet's header. Next, the method performs a forwarding lookup operation based on the internal virtual network identifier. If the forwarding lookup operation succeeds, the method can process and forward the packet accordingly. However, if the forwarding lookup operation fails, the method can determine a set of egress ports based on the internal virtual network identifier. Next, for each egress port in the set of egress ports, the method can flood the packet if a virtual network identifier in the packet's header is associated with the egress port. Flooding packets on a per-virtual-network basis can substantially reduce the amount of resources required to flood the packet when a forwarding lookup operation fails.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: October 31, 2017
    Assignee: BROCADE COMMUNICATIONS SYSTEMS, INC.
    Inventors: Shunjia Yu, Anoop Ghanwani, Phanidhar Koganti, Dilip Chatwani
  • Patent number: 9800471
    Abstract: One embodiment of the present invention provides a switch in a network of interconnected switches. The switch includes a network extension module, which maintains a mapping between a first virtual local area network (VLAN) identifier and a first global VLAN identifier of a network extension group. The network extension group is represented by a range of global VLAN identifiers for a tenant. A global VLAN identifier is persistent in a respective switch of the network and represents a virtual forwarding domain in the network. During operation, the network extension module includes the global VLAN identifier in a packet belonging to the first VLAN.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: October 24, 2017
    Assignee: BROCADE COMMUNICATIONS SYSTEMS, INC.
    Inventors: Venkata R. K. Addanki, Mythilikanth Raman, Phanidhar Koganti, Shunjia Yu, Suresh Vobbilisetty
  • Publication number: 20170118044
    Abstract: One embodiment of the present invention provides a switch that is a member of a fabric switch. The switch includes a keepalive response module that identifies a keepalive response packet that does not correspond to any keepalive packet previously transmitted by the switch. The switch also includes a switch identifier extraction module that extracts a switch identifier from a payload of the keepalive response packet, where the switch identifier corresponds to another member switch in the fabric switch. The switch further includes a forwarding module that constructs a packet that includes the payload and is destined to the other member switch.
    Type: Application
    Filed: January 10, 2017
    Publication date: April 27, 2017
    Applicant: BROCADE COMMUNICATIONS SYSTEMS, INC.
    Inventors: Amit Kumar Ray, Phanidhar Koganti, Shunjia Yu, Vardarajan Venkatesh
  • Patent number: 9628293
    Abstract: Systems and techniques for performing network layer multicasting in a TRILL network are described. Some embodiments provide a system that receives multicast packet that includes a network-layer multicast-address. The multicast packet can be received on a first multicast tree associated with a first virtual network. Next, the system can determine, based on the network-layer multicast-address, a second multicast tree associated with a second virtual network over which the multicast packet is to be forwarded. The system can then forward the multicast packet on the first multicast tree associated with the first virtual network, and forward a copy of the multicast packet on the second multicast tree associated with the second virtual network.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: April 18, 2017
    Assignee: BROCADE COMMUNICATIONS SYSTEMS, INC.
    Inventors: Shunjia Yu, Anoop Ghanwani, Nagarajan Venkatesan, Rajiv Krishnamurthy, Phanidhar Koganti, Mythilikanth Raman
  • Patent number: 9608833
    Abstract: Systems and techniques for supporting multiple multicast trees are described. Some embodiments provide a system that determines an internal multicast group identifier based on a source address, a multicast address, and a multicast tree identifier field associated with a multicast packet. The system can then forward the multicast packet based on the internal multicast group identifier. Specifically, the system can determine a first set of bits based on the source address and the multicast address of the multicast packet. The system can determine a second set of bits based on the multicast tree identifier field of the multicast packet. Next, the system can combine the first set of bits and the second set of bits to obtain the internal multicast group identifier. In some embodiments, the scope of an internal virtual network identifier does not extend beyond a switch or a forwarding module within a switch.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: March 28, 2017
    Assignee: BROCADE COMMUNICATIONS SYSTEMS, INC.
    Inventors: Shunjia Yu, Nagarajan Venkatesan, Anoop Ghanwani, Phanidhar Koganti, Mythilikanth Raman, Rajiv Krishnamurthy, Dilip Chatwani
  • Patent number: 9565028
    Abstract: One embodiment of the present invention provides a switch. The switch includes an inter-switch multicast module and an edge multicast module. The inter-switch multicast module identifies for a first replication of a multicast packet an egress inter-switch port in a multicast tree rooted at the switch. The multicast tree is identified by an identifier of the switch. The edge multicast module identifies an egress edge port for a second replication of the multicast packet based on a multicast group identifier. The multicast group identifier is local within the switch.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: February 7, 2017
    Assignee: BROCADE COMMUNICATIONS SYSTEMS, INC.
    Inventors: Venkata R. K. Addanki, Shunjia Yu, Mythilikanth Raman
  • Patent number: 9548873
    Abstract: One embodiment of the present invention provides a switch that is a member of a fabric switch. The switch includes a keepalive response module that identifies a keepalive response packet that does not correspond to any keepalive packet previously transmitted by the switch. The switch also includes a switch identifier extraction module that extracts a switch identifier from a payload of the keepalive response packet, where the switch identifier corresponds to another member switch in the fabric switch. The switch further includes a forwarding module that constructs a packet that includes the payload and is destined to the other member switch.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: January 17, 2017
    Assignee: BROCADE COMMUNICATIONS SYSTEMS, INC.
    Inventors: Amit K. Ray, Phanidhar Koganti, Shunjia Yu, Vardarajan Venkatesh
  • Patent number: 9455935
    Abstract: A switch that facilitates remote port mirroring is described. The switch can include an encapsulation mechanism and a forwarding mechanism. The encapsulation mechanism can be configured to encapsulate a copy of a first packet in a second packet, thereby preserving header information (e.g., a VLAN identifier and/or a TRILL header) of the first packet. The forwarding mechanism can be configured to forward the first packet using header information of the first packet, and forward the second packet using header information of the second packet. The second packet can be received at a destination switch which extracts the first packet from the second packet, and sends the first packet on a port which is coupled to a network analyzer.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: September 27, 2016
    Assignee: BROCADE COMMUNICATIONS SYSTEMS, INC.
    Inventors: Shunjia Yu, Phanidhar Koganti, John Michael Terry, Dilip Chatwani
  • Patent number: 9407533
    Abstract: One embodiment of the present invention provides a switch. A switch includes a storage and a multicast management mechanism. The storage is configured to store an entry indicating a multicast group membership learned at a remote switch. The multicast management mechanism is coupled to the storage and is configured to suppress flooding of packets destined for the multicast group.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: August 2, 2016
    Assignee: BROCADE COMMUNICATIONS SYSTEMS, INC.
    Inventors: Nagarajan Venkatesan, Anoop Ghanwani, Shunjia Yu, Phanidhar Koganti, Rajiv Krishnamurthy