Patents by Inventor Ajay K. Modi
Ajay K. Modi 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: 20240155005Abstract: Zero-trust dynamic discovery in provided by identifying a plurality of endpoints, including targets and initiators, connected to a software defined network, wherein the targets are provided on the software defined network according to a network addressable memory standard that lacks a native discovery service; grouping the targets into a plurality of target groups and the initiators into a plurality of initiator groups; and in response to receiving a discovery request from a given initiator grouped in a given initiator group of the plurality of initiator groups, returning addressing information for a target group of the plurality of target groups associated with the given initiator group in a security policy configuration for the software defined network.Type: ApplicationFiled: January 12, 2024Publication date: May 9, 2024Inventors: Saravanan SAMPATHKUMAR, Ajay K. MODI, Umamaheswararao KARYAMPUDI, Kamal BAKSHI, Yousuf H. KHAN
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Publication number: 20230026570Abstract: Zero-trust dynamic discovery in provided by identifying a plurality of endpoints, including targets and initiators, connected to a software defined network, wherein the targets are provided on the software defined network according to a network addressable memory standard that lacks a native discovery service; grouping the targets into a plurality of target groups and the initiators into a plurality of initiator groups; and in response to receiving a discovery request from a given initiator grouped in a given initiator group of the plurality of initiator groups, returning addressing information for a target group of the plurality of target groups associated with the given initiator group in a security policy configuration for the software defined network.Type: ApplicationFiled: September 30, 2022Publication date: January 26, 2023Inventors: Saravanan SAMPATHKUMAR, Ajay K. MODI, Umamaheswararao KARYAMPUDI, Kamal BAKSHI, Yousuf H. KHAN
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Patent number: 11503077Abstract: Zero-trust dynamic discovery in provided by identifying a plurality of endpoints, including targets and initiators, connected to a software defined network, wherein the targets are provided on the software defined network according to a network addressable memory standard that lacks a native discovery service; grouping the targets into a plurality of target groups and the initiators into a plurality of initiator groups; and in response to receiving a discovery request from a given initiator grouped in a given initiator group of the plurality of initiator groups, returning addressing information for a target group of the plurality of target groups associated with the given initiator group in a security policy configuration for the software defined network.Type: GrantFiled: August 7, 2020Date of Patent: November 15, 2022Assignee: Cisco Technology, Inc.Inventors: Saravanan Sampathkumar, Ajay K. Modi, Umamaheswararao Karyampudi, Kamal Bakshi, Yousuf H. Khan
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Patent number: 11336694Abstract: Techniques for hierarchical security policies are disclosed. A first network configuration is received, where the first network configuration includes a plurality of subnets and a plurality of security zones. An updated network configuration is generated based on the first network configuration by generating, for a first security zone of the plurality of security zones, a first master class, and generating, for each respective subnet of the plurality of subnets, a respective bridge domain. For each respective bridge domain, a respective local endpoint group (EPG) corresponding to the first security zone is created, and the first master class is assigned to the respective local EPG. Finally, one or more contracts are generated for the first master class based on the first network configuration.Type: GrantFiled: August 5, 2019Date of Patent: May 17, 2022Assignee: Cisco Technology, Inc.Inventors: Gautam Venkataramanan, Umamaheswararao Karyampudi, Murukanandam K. Panchalingam, Ajay K. Modi, Maurizio Portolani
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Patent number: 11303576Abstract: A network device receives a fragmented packet of an internet protocol (IP) packet. The fragmented packet is subsequently received relative to an initial fragmented packet of the IP packet and includes a first set of tuple information. The network device determines an entry of a hash table associated with the IP packet, based on the first set of tuple information and a fragment identifier (ID) within the fragmented packet. The network device retrieves a second set of tuple information associated with the fragmented packet from the hash table entry, and transmits an indication of the first and second sets of tuple information.Type: GrantFiled: October 17, 2019Date of Patent: April 12, 2022Assignee: Cisco Technology, Inc.Inventors: Ajay K. Modi, Atul Garg, Murukanandam K. Panchalingam, Umamaheswararao Karyampudi, Munish Mehta
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Publication number: 20220046058Abstract: Zero-trust dynamic discovery in provided by identifying a plurality of endpoints, including targets and initiators, connected to a software defined network, wherein the targets are provided on the software defined network according to a network addressable memory standard that lacks a native discovery service; grouping the targets into a plurality of target groups and the initiators into a plurality of initiator groups; and in response to receiving a discovery request from a given initiator grouped in a given initiator group of the plurality of initiator groups, returning addressing information for a target group of the plurality of target groups associated with the given initiator group in a security policy configuration for the software defined network.Type: ApplicationFiled: August 7, 2020Publication date: February 10, 2022Inventors: Saravanan SAMPATHKUMAR, Ajay K. MODI, Umamaheswararao KARYAMPUDI, Kamal BAKSHI, Yousuf H. KHAN
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Publication number: 20210119925Abstract: A network device receives a fragmented packet of an internet protocol (IP) packet. The fragmented packet is subsequently received relative to an initial fragmented packet of the IP packet and includes a first set of tuple information. The network device determines an entry of a hash table associated with the IP packet, based on the first set of tuple information and a fragment identifier (ID) within the fragmented packet. The network device retrieves a second set of tuple information associated with the fragmented packet from the hash table entry, and transmits an indication of the first and second sets of tuple information.Type: ApplicationFiled: October 17, 2019Publication date: April 22, 2021Inventors: Ajay K. MODI, Atul GARG, Murukanandam K. PANCHALINGAM, Umamaheswararao KARYAMPUDI, Munish MEHTA
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Publication number: 20210044622Abstract: Techniques for hierarchical security policies are disclosed. A first network configuration is received, where the first network configuration includes a plurality of subnets and a plurality of security zones. An updated network configuration is generated based on the first network configuration by generating, for a first security zone of the plurality of security zones, a first master class, and generating, for each respective subnet of the plurality of subnets, a respective bridge domain. For each respective bridge domain, a respective local endpoint group (EPG) corresponding to the first security zone is created, and the first master class is assigned to the respective local EPG. Finally, one or more contracts are generated for the first master class based on the first network configuration.Type: ApplicationFiled: August 5, 2019Publication date: February 11, 2021Inventors: Gautam Venkataramanan, Umamaheswararao Karyampudi, Murukanandam K. Panchalingam, Ajay K. Modi, Maurizio Portolani
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Patent number: 10834010Abstract: Embodiments provide for mitigating priority flow control deadlock in stretch topologies by initializing a plurality of queues in a buffer of a leaf switch at a local cluster of a site having a plurality of clusters, wherein each queue of the plurality of queues corresponds to a respective one cluster of the plurality of clusters; receiving a pause command for no-drop traffic on the leaf switch, the pause command including an internal Class-of-Service (iCoS) identifier associated with a particular cluster of the plurality of cluster and a corresponding queue in the plurality of queues; and in response to determining, based on the iCoS identifier, that the pause command was received from a remote spine switch associated with a different cluster than the local cluster: forwarding the pause command to a local spine switch in the local cluster; and implementing the pause command on the corresponding queue in the buffer.Type: GrantFiled: October 26, 2018Date of Patent: November 10, 2020Assignee: Cisco Technology, Inc.Inventors: Saravanan Sampathkumar, Ajay K. Modi, Umamaheswararao Karyampudi, Vikas V. Patel, Gautam Venkataramanan
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Publication number: 20200136985Abstract: Embodiments provide for mitigating priority flow control deadlock in stretch topologies by initializing a plurality of queues in a buffer of a leaf switch at a local cluster of a site having a plurality of clusters, wherein each queue of the plurality of queues corresponds to a respective one cluster of the plurality of clusters; receiving a pause command for no-drop traffic on the leaf switch, the pause command including an internal Class-of-Service (iCoS) identifier associated with a particular cluster of the plurality of cluster and a corresponding queue in the plurality of queues; and in response to determining, based on the iCoS identifier, that the pause command was received from a remote spine switch associated with a different cluster than the local cluster: forwarding the pause command to a local spine switch in the local cluster; and implementing the pause command on the corresponding queue in the buffer.Type: ApplicationFiled: October 26, 2018Publication date: April 30, 2020Inventors: Saravanan SAMPATHKUMAR, Ajay K. MODI, Umamaheswararao KARYAMPUDI, Vikas V. PATEL, Gautam VENKATARAMANAN
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Patent number: 5351492Abstract: The present invention relates an improvement to a cryogenic process for the separation of air which produces at least a nitrogen product and is carried out in a distillation column system having at least one distillation column from which the nitrogen product is produced. The distillation column of the distillation column system must comprise a rectifying section. In the process of the present invention, air is compressed, freed of impurities which will freeze out at cryogenic temperatures, cooled to near its dew point and fractionated in the distillation column system to produce the nitrogen product.The improvement is the operation of the distillation column such that the ratio of downward liquid to upward vapor flow rate (L/V) is no less than 0.65, preferably greater than 0.75, but less than 1.0 in the rectifying section of a distillation column from which the nitrogen product is produced. The flowrates are in moles per unit time.Type: GrantFiled: September 23, 1992Date of Patent: October 4, 1994Assignee: Air Products and Chemicals, Inc.Inventors: Rakesh Agrawal, Ajay K. Modi, William T. Kleinberg