Patents by Inventor Srikanth Keesara

Srikanth Keesara 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).

  • Patent number: 11019028
    Abstract: Systems, methods, and apparatuses are disclosed herein for automatically assigning nicknames in a SPBM network. In some aspects, a first switch of a plurality of switches in the SPBM network is detected as being designated as responsible for assigning nicknames to the plurality of switches. Control circuitry responsively instantiates, at the nick name server, a DHCP service. The control circuitry detects, at the nickname server, a respective other switch of the plurality of switches in the SPBM network, and responsively assigns, using the DHCP service, a respective IP address for the respective other switch. A host portion of the respective IP address is assigned as the nickname for the respective other switch.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: May 25, 2021
    Assignee: Extreme Networks, Inc.
    Inventors: Srikanth Keesara, Bjorn Haas, Constantin Barcaru
  • Patent number: 10880215
    Abstract: Systems, methods, and apparatuses are disclosed herein for providing an Individual Service Instance identifier (“I-SID”) translation service for accessing services on different networks. Packets designated for specific services via an I-SID Tag may be received at an edge network device and a lookup may be performed to locate the service on another network via the I-SID corresponding to the service, the I-SID being mapped at another network. The I-SID may be updated with the newly-located I-SID in order for the packet to reach an appropriate service on the other network.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: December 29, 2020
    Assignee: Extreme Networks, Inc.
    Inventors: Deborah Ellen Fitzgerald, Srikanth Keesara
  • Patent number: 10805390
    Abstract: A method and apparatus for automated mirroring is presented. A network device running as a Fabric Attach (FA) server configured to mirror traffic to a Remote Switch Port Analyzer (RSPAN) Virtual Local Area Network (VLAN), issues an FA Type Length Value (TLV) on its uplink to the FA server. The TLV includes a request to associate said RSPAN VLAN with a Service Identifier (I-SID) used to carry mirror traffic in a network. The network device sends the mirrored traffic on the RSPAN VLAN on its uplink to the FA server. The network device signals the I-SID into the network, and detects receive interest in the I-SID. The network device delivers the mirrored traffic to devices that expressed a receive interest in the mirrored traffic.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: October 13, 2020
    Assignee: Extreme Networks, Inc.
    Inventors: Srikanth Keesara, Venkat Dabbara, Parthiv Shrimankar, Robert Lee
  • Patent number: 10785187
    Abstract: Implementing auto attach for a shortest path bridging (SPB) network comprises determining, on an access point, that an auto attach device communicating in a SPB network is enabled for auto attach, and an advertisement is transmitted to a mobile station. The access point acts a proxy between the mobile station and the auto-attach device by communicably coupling the auto attach device and the mobile station via the access point. A virtual local area network (VLAN) identification and service instance identifier (I-SID) is received from the mobile station, when is then transmitted to the auto-attach device. A VLAN (independent of any static VLAN associated with the WLAN) is created off of the VLAN identification and an indication that the I-SID and the VLAN have been accepted. Data communications are then provided between the mobile station and the auto attach device via the VLAN and the access point.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: September 22, 2020
    Assignee: Extreme Networks, Inc.
    Inventors: Deborah Ellen Fitzgerald, Srikanth Keesara
  • Patent number: 10594512
    Abstract: A transport network employs dual homing to an access network to provide connectivity from multiple network switches. Dual homing is a mechanism by which an access network employs pair of switches in the transport network as if it were connecting to a single device. Conventional arrangements for defining multiple paths from a transport network to an access network suffer from the shortcomings of potential routing loops, increased hops to the access network, and inability or inconsistency with forwarding to different types of access networks, and may involve redirecting traffic absent faults in the access network. The dual homed network switches identify the type of access network and perform switching logic corresponding to the access network type to provide comprehensive dual-homed support to the access network independently of the type of transport employed in the access network, and employ redirection only if there is a fault in the access network.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: March 17, 2020
    Assignee: Extreme Networks, Inc.
    Inventors: Srikanth Keesara, Sakthivadivu Saravanaraj, Liming Sun, Xiaolan Zhou
  • Publication number: 20200059450
    Abstract: Implementing auto attach for a shortest path bridging (SPB) network comprises determining, on an access point, that an auto attach device communicating in a SPB network is enabled for auto attach, and an advertisement is transmitted to a mobile station. The access point acts a proxy between the mobile station and the auto-attach device by communicably coupling the auto attach device and the mobile station via the access point. A virtual local area network (VLAN) identification and service instance identifier (I-SID) is received from the mobile station, when is then transmitted to the auto-attach device. A VLAN (independent of any static VLAN associated with the WLAN) is created off of the VLAN identification and an indication that the I-SID and the VLAN have been accepted. Data communications are then provided between the mobile station and the auto attach device via the VLAN and the access point.
    Type: Application
    Filed: October 28, 2019
    Publication date: February 20, 2020
    Inventors: Deborah Ellen FITZGERALD, Srikanth KEESARA
  • Patent number: 10404489
    Abstract: Systems and methods are presented herewith for automatically assigning a Multicast Backbone Media Access Control (“BMAC”) address to a switch (or a similar network device) newly-added to a network. Media Access Control (“MAC”) addresses (unicast addresses) that are assigned by default to the switch may be used in a process to generate a multicast BMAC address and assign the multicast BMAC address to the switch, thereby, automatically enabling communications with other network devices over the SPB network. The process involves modifying a bit of a selected unicast address to transform the address into a multicast address. The system may use the modified MAC address as the multicast BMAC address.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: September 3, 2019
    Assignee: EXTREME NETWORKS, INC.
    Inventors: Srikanth Keesara, Gautam Khera
  • Publication number: 20190222441
    Abstract: Systems and methods are presented herewith for automatically assigning a Multicast Backbone Media Access Control (“BMAC”) address to a switch (or a similar network device) newly-added to a network. Media Access Control (“MAC”) addresses (unicast addresses) that are assigned by default to the switch may be used in a process to generate a multicast BMAC address and assign the multicast BMAC address to the switch, thereby, automatically enabling communications with other network devices over the SPB network. The process involves modifying a bit of a selected unicast address to transform the address into a multicast address. The system may use the modified MAC address as the multicast BMAC address.
    Type: Application
    Filed: April 30, 2018
    Publication date: July 18, 2019
    Inventors: Srikanth Keesara, Gautam Khera
  • Publication number: 20190222557
    Abstract: Systems, methods, and apparatuses are disclosed herein for automatically assigning nicknames in a SPBM network. In some aspects, a first switch of a plurality of switches in the SPBM network is detected as being designated as responsible for assigning nicknames to the plurality of switches. Control circuitry responsively instantiates, at the nick name server, a DHCP service. The control circuitry detects, at the nickname server, a respective other switch of the plurality of switches in the SPBM network, and responsively assigns, using the DHCP service, a respective IP address for the respective other switch. A host portion of the respective IP address is assigned as the nickname for the respective other switch.
    Type: Application
    Filed: January 12, 2018
    Publication date: July 18, 2019
    Inventors: Srikanth Keesara, Bjorn Haas, Constantin Barcaru
  • Publication number: 20190182158
    Abstract: Systems, methods, and apparatuses are disclosed herein for providing an Individual Service Instance identifier (“I-SID”) translation service for accessing services on different networks. Packets designated for specific services via an I-SID Tag may be received at an edge network device and a lookup may be performed to locate the service on another network via the I-SID corresponding to the service, the I-SID being mapped at another network. The I-SID may be updated with the newly-located I-SID in order for the packet to reach an appropriate service on the other network.
    Type: Application
    Filed: December 13, 2017
    Publication date: June 13, 2019
    Inventors: Deborah Ellen Fitzgerald, Srikanth Keesara
  • Publication number: 20190109902
    Abstract: A method and apparatus for automated mirroring is presented. A network device running as a Fabric Attach (FA) server configured to mirror traffic to a Remote Switch Port Analyzer (RSPAN) Virtual Local Area Network (VLAN), issues an FA Type Length Value (TLV) on its uplink to the FA server. The TLV includes a request to associate said RSPAN VLAN with a Service Identifier (I-SID) used to carry mirror traffic in a network. The network device sends the mirrored traffic on the RSPAN VLAN on its uplink to the FA server. The network device signals the I-SID into the network, and detects receive interest in the I-SID. The network device delivers the mirrored traffic to devices that expressed a receive interest in the mirrored traffic.
    Type: Application
    Filed: October 8, 2018
    Publication date: April 11, 2019
    Applicant: Extreme Networks, Inc.
    Inventors: Srikanth Keesara, Venkat Dabbara, Parthiv Shrimankar, Robert Lee
  • Patent number: 10097639
    Abstract: Methods, systems and computer readable media for zero touch attachment of devices, such as Internet of Things (IoT) devices, to an SPB network are described.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: October 9, 2018
    Assignee: AVAYA INC.
    Inventors: Keith Krajewski, Deborah Fitzgerald, Carl Keene, Srikanth Keesara
  • Patent number: 10097633
    Abstract: A method and apparatus for automated mirroring is presented. A network device running as a Fabric Attach (FA) server configured to mirror traffic to a Remote Switch Port Analyzer (RSPAN) Virtual Local Area Network (VLAN), issues an FA Type Length Value (TLV) on its uplink to the FA server. The TLV includes a request to associate said RSPAN VLAN with a Service Identifier (I-SID) used to carry mirror traffic in a network. The network device sends the mirrored traffic on the RSPAN VLAN on its uplink to the FA server. The network device signals the I-SID into the network, and detects receive interest in the I-SID. The network device delivers the mirrored traffic to devices that expressed a receive interest in the mirrored traffic.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: October 9, 2018
    Assignee: Extreme Networks, Inc.
    Inventors: Srikanth Keesara, Venkat Dabbara, Parthiv Shrimankar, Robert Lee
  • Patent number: 10075522
    Abstract: A method and apparatus for automated mirroring is presented. In a particular embodiment of a method for automated mirroring, a Network Device running as a Fabric Attach (FA) Server receives an FA Type Length Value (TLV) from an Access Device running as a FA proxy or client. The Access Device is configured to mirror traffic to a Remote Switch Port Analyzer (RSPAN) Virtual Local Area Network (VLAN). The TLV includes a request to associate the RSPAN VLAN with a Service Identifier (I-SID) used to carry mirror traffic in a network. The method includes wherein the FA server receives the mirrored traffic on the RSPAN VLAN. The FA Server signals the I-SID into the network, and detects receive interest in the I-SID. The FA Server delivers the mirrored traffic to devices that expressed a receive interest in the mirrored traffic.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: September 11, 2018
    Assignee: Extreme Networks, Inc.
    Inventors: Srikanth Keesara, Venkat Dabbara, Parthiv Shrimankar, Robert Lee
  • Patent number: 9954750
    Abstract: A computer-implemented method, apparatus and software for debugging auto-attach entities is presented. A Continuity Fault Management (CFM) request for a service is received over a network at an Auto-Attach (AA) server. The AA server responds with a first response regarding the AA server on the service. The AA server also responds to the CFM request with a second response regarding any AA clients and any AA proxies on the service.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: April 24, 2018
    Assignee: Extreme Networks, Inc.
    Inventors: Srikanth Keesara, Deborah Ellen Fitzgerald
  • Publication number: 20180069727
    Abstract: A transport network employs dual homing to an access network to provide connectivity from multiple network switches. Dual homing is a mechanism by which an access network employs pair of switches in the transport network as if it were connecting to a single device. Conventional arrangements for defining multiple paths from a transport network to an access network suffer from the shortcomings of potential routing loops, increased hops to the access network, and inability or inconsistency with forwarding to different types of access networks, and may involve redirecting traffic absent faults in the access network. The dual homed network switches identify the type of access network and perform switching logic corresponding to the access network type to provide comprehensive dual-homed support to the access network independently of the type of transport employed in the access network, and employ redirection only if there is a fault in the access network.
    Type: Application
    Filed: November 1, 2017
    Publication date: March 8, 2018
    Inventors: Srikanth Keesara, Sakthivadivu Saravanaraj, Liming Sun, Xiaolan Zhou
  • Patent number: 9860081
    Abstract: A method, apparatus and computer program product for providing multi-homing techniques for SPB networks is presented. A set of UNI nodes that receive multicast packets are determined based on Backbone Media Access Control-Destination Address (BMAC-DA)/I-Tag Service Identifier (I-SID) of received multicast packets for multicast packets within a transport network. A separate Egress Port Mask is determined for each Backbone-Virtual Local Area Network (B-VLAN) of the transport network, wherein the Egress Port Mask is determined such that only one UNI node of the set of UNI nodes forwards said multicast packets. A set of UNI copies of said multicast packets are filtered out by applying the Egress Port Mask, wherein copies that are not in the Egress Port Mask are dropped. Copies of multicast packets that are not dropped are sent out.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: January 2, 2018
    Assignee: Extreme Networks, Inc.
    Inventors: Srikanth Keesara, Roger Lapuh
  • Patent number: 9832124
    Abstract: A method, apparatus and computer program product for providing Virtual Routing and Forwarding (VRF) and gateway Media Access Controller (MAC) distribution is presented. At least one subnet associated with a Layer 2 Virtual Switching Network (L2VSN) is provided on a network device. A message is propagated to a distributed Datapath. Network devices install the message as a routable MAC address on the L2VSN for the Layer 3 Virtual Switching Network/Virtual Routing and Forwarding (L3VSN/VRF) associated with the message. Edge devices route packets on the L2VSN addressed to the gateway MAC address.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: November 28, 2017
    Assignee: Extreme Networks, Inc.
    Inventors: Srikanth Keesara, Roger Lapuh
  • Patent number: 9813257
    Abstract: A transport network employs dual homing to an access network to provide connectivity from multiple network switches. Dual homing is a mechanism by which an access network employs pair of switches in the transport network as if it were connecting to a single device. Conventional arrangements for defining multiple paths from a transport network to an access network suffer from the shortcomings of potential routing loops, increased hops to the access network, and inability or inconsistency with forwarding to different types of access networks, and may involve redirecting traffic absent faults in the access network. The dual homed network switches identify the type of access network and perform switching logic corresponding to the access network type to provide comprehensive dual-homed support to the access network independently of the type of transport employed in the access network, and employ redirection only if there is a fault in the access network.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: November 7, 2017
    Assignee: Extreme Networks, Inc.
    Inventors: Srikanth Keesara, Sakthivadivu Saravanaraj, Liming Sun, Xiaolan Zhou
  • Patent number: 9806989
    Abstract: A method, apparatus and computer program product for providing a best route selection rule is presented. A determination is made at a first edge router, whether a second edge router in a network advertises a first BMAC address and at least one other BMAC address When the second edge router advertises only a first BMAC address, then the first BMAC address is used in a routing table for a Layer 3 (L3) next hop for a route. When the second edge router advertises more than one BMAC address, at least one other BMAC address is used in the routing table for said L3 next hop for the route.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: October 31, 2017
    Assignee: Extreme Networks, Inc.
    Inventors: Srikanth Keesara, Gautam Khera, Vedavinayagam Ganesan