Patents by Inventor Sudheer R. Yelanduru
Sudheer R. Yelanduru 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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Patent number: 10341256Abstract: Techniques are provided for two components in a distributed Fiber Channel Forwarder (FCF) to establish a link between them at a level of operation that is mutually compatible with respect to the various capabilities offered by the two components. A controlling switch in the distributed FCF may simultaneously operate at different levels with different Fiber Channel Data-Plane Forwarders (FDFs), on a per-pair basis. The level of operation is established at the granularity of an individual capability offered by a switching element. When switching elements are upgraded, the switching elements can dynamically switch to higher or lower levels of operation for any or all of the capabilities defined per pair of switching element.Type: GrantFiled: April 11, 2014Date of Patent: July 2, 2019Assignee: International Business Machines CorporationInventors: Henry J. May, Christoph Raisch, Stefan Roscher, Daniel Sentler, Bharath B. Somayaji, Sudheer R. Yelanduru
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Patent number: 10178048Abstract: Techniques are provided for two components in a distributed Fiber Channel Forwarder (FCF) to establish a link between them at a level of operation that is mutually compatible with respect to the various capabilities offered by the two components. A controlling switch in the distributed FCF may simultaneously operate at different levels with different Fiber Channel Data-Plane Forwarders (FDFs), on a per-pair basis. The level of operation is established at the granularity of an individual capability offered by a switching element. When switching elements are upgraded, the switching elements can dynamically switch to higher or lower levels of operation for any or all of the capabilities defined per pair of switching element.Type: GrantFiled: March 19, 2014Date of Patent: January 8, 2019Assignee: International Business Machines CorporationInventors: Henry J. May, Christoph Raisch, Stefan Roscher, Daniel Sentler, Bharath B. Somayaji, Sudheer R. Yelanduru
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Patent number: 10050908Abstract: Techniques are provided for synchronizing, in a distributed Fiber Channel fabric or a distributed FCoE fabric in which FC frames are encapsulated in Ethernet frames, a controlling FCoE forwarder (cFCF) with the FCoE data-plane forwarder (FDF). The operation includes entering a recovery mode at the FDF. The FDF is modified based on a route distribution message provided by the cFCF which includes fabric-provided MAC addresses (FPMAs). The FDF notifies the cFCF of differences between the FPMAs supplied by the route distribution message with the FPMAs known by the FDF. The FDF leaves the recovery mode and sends an acknowledgement to the cFCF.Type: GrantFiled: July 14, 2016Date of Patent: August 14, 2018Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Henry J. May, Christoph Raisch, Stefan Roscher, Daniel Sentler, Bharath B. Somayaji, Sudheer R. Yelanduru
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Patent number: 9954786Abstract: Data traffic switching among computing device in a SAN environment is disclosed herein. According to an aspect, a method may be implemented at an NPV device that is associated with multiple computing devices positioned behind the NPV device in a SAN. The method may also include receiving zoning information associated with the computing devices. The method may also include determining, based on the zoning information a map for switching data traffic among the computing devices. Further, the method may include switching the data traffic among the computing devices based on the determined map.Type: GrantFiled: August 17, 2015Date of Patent: April 24, 2018Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Sriharsha Jayanarayana, Deepak Kumar, Sudheer R. Yelanduru
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Patent number: 9531634Abstract: Data traffic switching among computing device in a SAN environment is disclosed herein. According to an aspect, a method may be implemented at an NPV device that is associated with multiple computing devices positioned behind the NPV device in a SAN. The method may also include receiving zoning information associated with the computing devices. The method may also include determining, based on the zoning information a map for switching data traffic among the computing devices. Further, the method may include switching the data traffic among the computing devices based on the determined map.Type: GrantFiled: November 11, 2013Date of Patent: December 27, 2016Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Sriharsha Jayanarayana, Deepak Kumar, Sudheer R. Yelanduru
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Patent number: 9515964Abstract: Techniques are provided for synchronizing, in a distributed Fiber Channel fabric or a distributed FCoE fabric in which FC frames are encapsulated in Ethernet frames, a controlling FCoE forwarder (cFCF) with the FCoE data-plane forwarder (FDF). The operation includes entering a recovery mode at the FDF. The FDF is modified based on a route distribution message provided by the cFCF which includes fabric-provided MAC addresses (FPMAs). The FDF notifies the cFCF of differences between the FPMAs supplied by the route distribution message with the FPMAs known by the FDF. The FDF leaves the recovery mode and sends an acknowledgement to the cFCF.Type: GrantFiled: May 13, 2014Date of Patent: December 6, 2016Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Henry J. May, Christoph Raisch, Stefan Roscher, Daniel Sentler, Bharath B. Somayaji, Sudheer R. Yelanduru
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Publication number: 20160323205Abstract: Techniques are provided for synchronizing, in a distributed Fibre Channel fabric or a distributed FCoE fabric in which FC frames are encapsulated in Ethernet frames, a controlling FCoE forwarder (cFCF) with the FCoE data-plane forwarder (FDF). The operation includes entering a recovery mode at the FDF. The FDF is modified based on a route distribution message provided by the cFCF which includes fabric-provided MAC addresses (FPMAs). The FDF notifies the cFCF of differences between the FPMAs supplied by the route distribution message with the FPMAs known by the FDF. The FDF leaves the recovery mode and sends an acknowledgement to the cFCF.Type: ApplicationFiled: July 14, 2016Publication date: November 3, 2016Inventors: Henry J. MAY, Christoph RAISCH, Stefan ROSCHER, Daniel SENTLER, Bharath B. SOMAYAJI, Sudheer R. YELANDURU
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Patent number: 9473397Abstract: Provided are computer program product, system, and method for determining whether a short or long message format is used to communicate zone information in a network. One large zone is implemented for end devices coupled to ports of data forwarders. A first formatted zoning distribution message is generated for the data forwarders identifying the data forwarder and ports on the data forwarders in the one large zone in response to determining that the data forwarder supports the short message format. A second formatted zoning distribution message is generated identifying the data forwarder, the ports on the data forwarders, and additional fields of information on the ports not included in the first formatted zoning distribution message in response to determining that the data forwarder does not support the short message format; and sending the generated first formatted or second formatted zoning distribution message to the data forwarder.Type: GrantFiled: February 3, 2014Date of Patent: October 18, 2016Assignee: International Business Machines CorporationInventors: Patricia G. Driever, Roger G. Hathorn, Henry J. May, Daniel Sentler, Bharath B. Somayaji, Sudheer R. Yelanduru
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Patent number: 9432754Abstract: Techniques are provided for distributing a fabric name to switching elements of a distributed switch configured to forward Fibre Channel over Ethernet (FCoE) frames. A distributed switch membership distributed (DMFD) message is transmitted that includes names of all switching elements in the distributed switch, and further includes a fabric descriptor that contains the fabric name.Type: GrantFiled: November 12, 2013Date of Patent: August 30, 2016Assignee: GLOBALFOUNDRIES INC.Inventors: Joachim Fenkes, Roger G. Hathorn, Sriharsha Jayanarayana, Henry J. May, Daniel Sentler, Sudheer R. Yelanduru
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Patent number: 9426546Abstract: Techniques are provided for distributing a fabric name to switching elements of a distributed switch configured to forward Fibre Channel over Ethernet (FCoE) frames. A distributed switch membership distributed (DMFD) message is transmitted that includes names of all switching elements in the distributed switch, and further includes a fabric descriptor that contains the fabric name.Type: GrantFiled: October 21, 2013Date of Patent: August 23, 2016Assignee: GLOBAL FOUNDRIES INC.Inventors: Joachim Fenkes, Roger G. Hathorn, Sriharsha Jayanarayana, Henry J. May, Daniel Sentler, Sudheer R. Yelanduru
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Patent number: 9426098Abstract: Techniques are provided for synchronizing, in a distributed Fiber Channel fabric or a distributed FCoE fabric in which FC frames are encapsulated in Ethernet frames, a controlling FCoE forwarder (cFCF) with the FCoE data-plane forwarder (FDF). The operation includes entering a recovery mode at the FDF. The FDF is modified based on a route distribution message provided by the cFCF which includes fabric-provided MAC addresses (FPMAs). The FDF notifies the cFCF of differences between the FPMAs supplied by the route distribution message with the FPMAs known by the FDF. The FDF leaves the recovery mode and sends an acknowledgement to the cFCF.Type: GrantFiled: April 29, 2014Date of Patent: August 23, 2016Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Henry J. May, Christoph Raisch, Stefan Roscher, Daniel Sentler, Bharath B. Somayaji, Sudheer R. Yelanduru
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Publication number: 20150358241Abstract: Data traffic switching among computing device in a SAN environment is disclosed herein. According to an aspect, a method may be implemented at an NPV device that is associated with multiple computing devices positioned behind the NPV device in a SAN. The method may also include receiving zoning information associated with the computing devices. The method may also include determining, based on the zoning information a map for switching data traffic among the computing devices. Further, the method may include switching the data traffic among the computing devices based on the determined map.Type: ApplicationFiled: August 17, 2015Publication date: December 10, 2015Inventors: Sriharsha Jayanarayana, Deepak Kumar, Sudheer R. Yelanduru
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Publication number: 20150312172Abstract: Techniques are provided for synchronizing, in a distributed Fibre Channel fabric or a distributed FCoE fabric in which FC frames are encapsulated in Ethernet frames, a controlling FCoE forwarder (cFCF) with the FCoE data-plane forwarder (FDF). The operation includes entering a recovery mode at the FDF. The FDF is modified based on a route distribution message provided by the cFCF which includes fabric-provided MAC addresses (FPMAs). The FDF notifies the cFCF of differences between the FPMAs supplied by the route distribution message with the FPMAs known by the FDF. The FDF leaves the recovery mode and sends an acknowledgement to the cFCF.Type: ApplicationFiled: April 29, 2014Publication date: October 29, 2015Applicant: International Business Machines CorporationInventors: Henry J. MAY, Christoph RAISCH, Stefan ROSCHER, Daniel SENTLER, Bharath B. SOMAYAJI, Sudheer R. YELANDURU
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Publication number: 20150312173Abstract: Techniques are provided for synchronizing, in a distributed Fibre Channel fabric or a distributed FCoE fabric in which FC frames are encapsulated in Ethernet frames, a controlling FCoE forwarder (cFCF) with the FCoE data-plane forwarder (FDF). The operation includes entering a recovery mode at the FDF. The FDF is modified based on a route distribution message provided by the cFCF which includes fabric-provided MAC addresses (FPMAs). The FDF notifies the cFCF of differences between the FPMAs supplied by the route distribution message with the FPMAs known by the FDF. The FDF leaves the recovery mode and sends an acknowledgement to the cFCF.Type: ApplicationFiled: May 13, 2014Publication date: October 29, 2015Applicant: International Business Machines CorporationInventors: Henry J. MAY, Christoph RAISCH, Stefan ROSCHER, Daniel SENTLER, Bharath B. SOMAYAJI, Sudheer R. YELANDURU
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Publication number: 20150271064Abstract: Techniques are provided for two components in a distributed Fibre Channel Forwarder (FCF) to establish a link between them at a level of operation that is mutually compatible with respect to the various capabilities offered by the two components. A controlling switch in the distributed FCF may simultaneously operate at different levels with different Fibre Channel Data-Plane Forwarders (FDFs), on a per-pair basis. The level of operation is established at the granularity of an individual capability offered by a switching element. When switching elements are upgraded, the switching elements can dynamically switch to higher or lower levels of operation for any or all of the capabilities defined per pair of switching element.Type: ApplicationFiled: March 19, 2014Publication date: September 24, 2015Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Henry J. MAY, Christoph RAISCH, Stefan ROSCHER, Daniel SENTLER, Bharath B. SOMAYAJI, Sudheer R. YELANDURU
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Publication number: 20150271065Abstract: Techniques are provided for two components in a distributed Fibre Channel Forwarder (FCF) to establish a link between them at a level of operation that is mutually compatible with respect to the various capabilities offered by the two components. A controlling switch in the distributed FCF may simultaneously operate at different levels with different Fibre Channel Data-Plane Forwarders (FDFs), on a per-pair basis. The level of operation is established at the granularity of an individual capability offered by a switching element. When switching elements are upgraded, the switching elements can dynamically switch to higher or lower levels of operation for any or all of the capabilities defined per pair of switching element.Type: ApplicationFiled: April 11, 2014Publication date: September 24, 2015Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Henry J. MAY, Christoph RAISCH, Stefan ROSCHER, Daniel SENTLER, Bharath B. SOMAYAJI, Sudheer R. YELANDURU
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Publication number: 20150222530Abstract: Provided are computer program product, system, and method for determining whether a short or long message format is used to communicate zone information in a network. One large zone is implemented for end devices coupled to ports of data forwarders. A first formatted zoning distribution message is generated for the data forwarders identifying the data forwarder and ports on the data forwarders in the one large zone in response to determining that the data forwarder supports the short message format. A second formatted zoning distribution message is generated identifying the data forwarder, the ports on the data forwarders, and additional fields of information on the ports not included in the first formatted zoning distribution message in response to determining that the data forwarder does not support the short message format; and sending the generated first formatted or second formatted zoning distribution message to the data forwarder.Type: ApplicationFiled: February 3, 2014Publication date: August 6, 2015Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Patricia G. Driever, Roger G. Hathorn, Henry J. May, Daniel Sentler, Bharath B. Somayaji, Sudheer R. Yelanduru
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Patent number: 9054950Abstract: Provided are a computer program product, system, and method for updating zone information in a distributed switch of data forwarders. For each data forwarder, a sequence number is maintained for zone distribution messages sent to the data forwarder. A change to the ports in the network is detected comprising at least one of an allocation or deallocation of at least one port in the network. The sequence number for each data forwarder is incremented in response to detecting the change. For each data forwarder, a zone distribution message is generated indicating the at least one port allocated and/or deallocated, port information indicating each port in the network that may communicate with each other port, and the sequence number for the data forwarder. The generated zone distribution message is transmitted for each data forwarder to the data forwarder for which the zone distribution message was added.Type: GrantFiled: February 26, 2013Date of Patent: June 9, 2015Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Roger G. Hathorn, Sriharsha Jayanarayana, Henry J. May, Stefan Roscher, Bharath B. Somayaji, Sudheer R. Yelanduru
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Patent number: 9054949Abstract: Provided are a computer program product, system, and method for updating zone information in a distributed switch of data forwarders. For each data forwarder, a sequence number is maintained for zone distribution messages sent to the data forwarder. A change to the ports in the network is detected comprising at least one of an allocation or deallocation of at least one port in the network. The sequence number for each data forwarder is incremented in response to detecting the change. For each data forwarder, a zone distribution message is generated indicating the at least one port allocated and/or deallocated, port information indicating each port in the network that may communicate with each other port, and the sequence number for the data forwarder. The generated zone distribution message is transmitted for each data forwarder to the data forwarder for which the zone distribution message was added.Type: GrantFiled: April 17, 2012Date of Patent: June 9, 2015Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Roger G. Hathorn, Sriharsha Jayanarayana, Henry J. May, Stefan Roscher, Bharath B. Somayaji, Sudheer R. Yelanduru
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Publication number: 20150134766Abstract: Data traffic switching among computing device in a SAN environment is disclosed herein. According to an aspect, a method may be implemented at an NPV device that is associated with multiple computing devices positioned behind the NPV device in a SAN. The method may also include receiving zoning information associated with the computing devices. The method may also include determining, based on the zoning information a map for switching data traffic among the computing devices. Further, the method may include switching the data traffic among the computing devices based on the determined map.Type: ApplicationFiled: November 11, 2013Publication date: May 14, 2015Applicant: International Business Machines CorporationInventors: Sriharsha Jayanarayana, Deepak Kumar, Sudheer R. Yelanduru