Patents by Inventor Rajesh Bhandari
Rajesh Bhandari 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: 8644174Abstract: The disclosed embodiments support improvements in network performance in networks such as storage area networks. This is particularly important in networks such as those implementing virtualization. These improvements, therefore, support improved mechanisms for performing processing in network devices such as switches, routers, or hosts. These improvements include various different mechanisms which may be used separately or in combination with one another. These mechanisms include methods and apparatus for processing traffic in an arbitrated loop, performing striping to support fairness and/or loop tenancy, performing configuration of network devices such as switches to enable virtualization to be performed closest to the storage device (e.g., disk), ascertaining a CPU efficiency that quantifies the impact of virtualization on a processor, and configuring or accessing a striped volume to account for metadata stored in each storage partition.Type: GrantFiled: October 5, 2009Date of Patent: February 4, 2014Assignee: Cisco Technology, Inc.Inventors: Rajesh Bhandari, Samar Sharma, Sanjaya Kumar
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Patent number: 8081568Abstract: Techniques for selecting authentication roles when establishing a link between devices in a secure network are provided. By assigning role levels to devices, devices may be more likely to assume a preferred role when establishing a link. For example, during a negotiation process, each device may establish a timer value based on their role level. Each device may initiate a timer with the timer value and, the device whose timer value expires first may assume a role as authenticator.Type: GrantFiled: February 22, 2008Date of Patent: December 20, 2011Assignee: Cisco Technology, Inc.Inventors: Padmanabha Nallur, Wilson Kok, Rajesh Bhandari
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Patent number: 7793138Abstract: Disclosed are methods and apparatus for detecting anomalies in a storage area network (SAN). Provided are one or more anomaly type(s) and corresponding actions to be performed when the one or more anomaly types are detected. Traffic in the SAN is then inspected in order to detect the one or more provided anomaly type(s). When a one of the provided one or more anomaly type(s) is detected, one or more of the corresponding action(s) is performed. The provided anomaly type(s) may include one or more of the following: a read or write access pattern anomaly, excessive login or control requests, a bandwidth usage anomaly, a configuration anomaly, and a hardware anomaly.Type: GrantFiled: December 21, 2005Date of Patent: September 7, 2010Assignee: Cisco Technology, Inc.Inventors: Gaurav Rastogi, Rajesh Bhandari, Samar Sharma, Fabio Maino
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Publication number: 20100023724Abstract: The disclosed embodiments support improvements in network performance in networks such as storage area networks. This is particularly important in networks such as those implementing virtualization. These improvements, therefore, support improved mechanisms for performing processing in network devices such as switches, routers, or hosts. These improvements include various different mechanisms which may be used separately or in combination with one another. These mechanisms include methods and apparatus for processing traffic in an arbitrated loop, performing striping to support fairness and/or loop tenancy, performing configuration of network devices such as switches to enable virtualization to be performed closest to the storage device (e.g., disk), ascertaining a CPU efficiency that quantifies the impact of virtualization on a processor, and configuring or accessing a striped volume to account for metadata stored in each storage partition.Type: ApplicationFiled: October 5, 2009Publication date: January 28, 2010Applicant: CISCO TECHNOLOGY, INC.Inventors: Rajesh Bhandari, Samar Sharma, Sanjaya Kumar
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Patent number: 7609649Abstract: Embodiments of the invention support improvements in network performance in networks such as storage area networks. This is particularly important in networks such as those implementing virtualization. These improvements, therefore, support improved mechanisms for performing processing in network devices such as switches, routers, or hosts. These improvements include various different mechanisms which may be used separately or in combination with one another. These mechanisms include methods and apparatus for processing traffic in an arbitrated loop, performing striping to support fairness and/or loop tenancy, performing configuration of network devices such as switches to enable virtualization to be performed closest to the storage device (e.g., disk), ascertaining a CPU efficiency that quantifies the impact of virtualization on a processor, and configuring or accessing a striped volume to account for metadata stored in each storage partition.Type: GrantFiled: April 26, 2005Date of Patent: October 27, 2009Assignee: Cisco Technology, Inc.Inventors: Rajesh Bhandari, Samar Sharma, Sanjaya Kumar
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Publication number: 20090213733Abstract: Techniques for selecting authentication roles when establishing a link between devices in a secure network are provided. By assigning role levels to devices, devices may be more likely to assume a preferred role when establishing a link. For example, during a negotiation process, each device may establish a timer value based on their role level. Each device may initiate a timer with the timer value and, the device whose timer value expires first may assume a role as authenticator.Type: ApplicationFiled: February 22, 2008Publication date: August 27, 2009Inventors: Padmanabha Nallur, Wilson Kok, Rajesh Bhandari
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Patent number: 7460527Abstract: According to the present invention, methods and apparatus are provided to allow efficient and effective aggregation of ports into port channels in a fiber channel network. A local fiber channel switch can automatically identify compatible ports and initiate exchange sequences with a remote fiber channel switch to aggregate ports into port channels. Ports can be aggregated synchronously to allow consistent generation of port channel map tables.Type: GrantFiled: August 20, 2004Date of Patent: December 2, 2008Assignee: Cisco Technology, Inc.Inventors: Kalyan Ghosh, Praveen Jain, Shankar Subramanian, Rajesh Bhandari, Prabesh Babu Nanjundaiah
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Publication number: 20070143552Abstract: Disclosed are methods and apparatus for detecting anomalies in a storage area network (SAN). Provided are one or more anomaly type(s) and corresponding actions to be performed when the one or more anomaly types are detected. Traffic in the SAN is then inspected in order to detect the one or more provided anomaly type(s). When a one of the provided one or more anomaly type(s) is detected, one or more of the corresponding action(s) is performed. The provided anomaly type(s) may include one or more of the following: a read or write access pattern anomaly, excessive login or control requests, a bandwidth usage anomaly, a configuration anomaly, and a hardware anomaly.Type: ApplicationFiled: December 21, 2005Publication date: June 21, 2007Inventors: Gaurav Rastogi, Rajesh Bhandari, Samar Sharma, Fabio Maino
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Publication number: 20060039366Abstract: According to the present invention, methods and apparatus are provided to allow efficient and effective aggregation of ports into port channels in a fibre channel network. A local fibre channel switch can automatically identify compatible ports and initiate exchange sequences with a remote fibre channel switch to aggregate ports into port channels. Ports can be aggregated synchronously to allow consistent generation of port channel map tables.Type: ApplicationFiled: August 20, 2004Publication date: February 23, 2006Applicant: Cisco Technology, Inc.Inventors: Kalyan Ghosh, Praveen Jain, Shankar Subramaniam, Rajesh Bhandari, Prabesh Nanjundaiah
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Patent number: 6163593Abstract: A method and apparatus for reducing off-focus radiation by modifying a shape of a rotating target anode disposed within a cathode grounded x-ray tube. The shape of the target anode body is modified such that surfaces of the target anode which could otherwise direct the greatest amounts of off-focus radiation toward an x-ray sensitive imaging device are angled or shortened so as to redirect the off-focus radiation away from a focal direction. These modifications to surfaces of the target anode body include modifying a front surface, a side or edge surface, and a back surface.Type: GrantFiled: August 21, 1998Date of Patent: December 19, 2000Assignee: Varian Medical Systems, Inc.Inventors: Thomas Koller, Rajesh Bhandari, Scott Coles, Wayne Truong, Jeffrey Takenaka