Patents by Inventor Mehak Mahajan
Mehak Mahajan 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: 20210399908Abstract: In accordance with one example embodiment, a system configured for programming a network layer multicast address entry in a routing table of an ingress line card module is disclosed. The network layer multicast address entry includes a network layer address associated with at least one egress line card. The system is further configured for programming a data link layer multicast routing address entry in a routing table of a fabric card module in which the data link layer multicast routing address entry corresponds to the network layer multicast address entry.Type: ApplicationFiled: September 2, 2021Publication date: December 23, 2021Inventors: Ayan Banerjee, Raghava K. Sivaramu, Srinivasan Ramabadran, Mehak Mahajan, Nataraj Batchu
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Patent number: 11133947Abstract: In accordance with one example embodiment, a system configured for programming a network layer multicast address entry in a routing table of an ingress line card module is disclosed. The network layer multicast address entry includes a network layer address associated with at least one egress line card. The system is further configured for programming a data link layer multicast routing address entry in a routing table of a fabric card module in which the data link layer multicast routing address entry corresponds to the network layer multicast address entry.Type: GrantFiled: April 1, 2019Date of Patent: September 28, 2021Assignee: CISCO TECHNOLOGY, INC.Inventors: Ayan Banerjee, Raghava K. Sivaramu, Srinivasan Ramabadran, Mehak Mahajan, Nataraj Batchu
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Patent number: 10805145Abstract: Disclosed are systems, methods, and computer-readable storage media for synchronizing the secondary vPC node to the primary vPC node in a BFD protocol over a VxLAN channel with a remote node. In some embodiments of the present technology a primary vPC node can receive a packet from the remote node. The primary vPC node can then determine the packet includes either a MAC address corresponding to the primary vPC node or a secondary vPC node, and at least one inner packet identifier. Additionally, the primary networking switch can identify an access control list (ACL) entry from a set of ACL entries based on the at least one inner packet identifier. Subsequently, based on the ACL entry, the primary vPC node can generate a copy of the packet. After which, the primary vPC node can transmit the packet to the secondary vPC node.Type: GrantFiled: November 26, 2018Date of Patent: October 13, 2020Assignee: CISCO TECHNOLOGY, INC.Inventors: Vengada Prasad Govindan, Ayan Banerjee, Mehak Mahajan, Abhayraj Kuldip Gidwani, Mudigonda Jwala Mallik
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Patent number: 10785186Abstract: A method is provided in one example embodiment and includes receiving at a controller an Address Resolution Protocol (“ARP”) packet from a source VXLAN Tunnel End Point (“VTEP”) serving a source host and identifying a destination, the source VTEP having assigned thereto a Virtual Network Identifier (“VNI”) identifying a VXLAN network to which the source VTEP and a plurality of other VTEPs belong, the ARP packet being received by the controller via a control plane; determining whether the received ARP packet is a request message; and, if the received ARP packet is a request message, determining whether address information for the identified destination is stored in a cache of the controller.Type: GrantFiled: December 19, 2018Date of Patent: September 22, 2020Assignee: CISCO TECHNOLOGY, INC.Inventors: Mehak Mahajan, Samir D. Thoria, Shyam Kapadia
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Patent number: 10749742Abstract: Systems, methods, and computer-readable storage media for configuring a virtual port channel (VPC) domain. The disclosed technology involves determining that a first switch and a second switch are connected in a VPC domain, determining that the first switch is in a primary role, and determining a unique identifier for the first switch, a VPC portchannel number for the first switch, and an orphan port number for the first switch. Also, the first switch receives a unique identifier, a VPC portchannel number, and an orphan port number for the second switch. The first switch can associate the VPC portchannel number for the second switch and the VPC portchannel number for the first switch with a unified VPC portchannel number and create a first unique orphan port number for the first switch and a second unique orphan port number for the second switch.Type: GrantFiled: January 28, 2019Date of Patent: August 18, 2020Assignee: CISCO TECHNOLOGY, INC.Inventors: Santa Dasu, Mehak Mahajan, Sandeep Subramaniam, Sanjay Basavanakattimatha
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Publication number: 20190229938Abstract: In accordance with one example embodiment, a system configured for programming a network layer multicast address entry in a routing table of an ingress line card module is disclosed. The network layer multicast address entry includes a network layer address associated with at least one egress line card. The system is further configured for programming a data link layer multicast routing address entry in a routing table of a fabric card module in which the data link layer multicast routing address entry corresponds to the network layer multicast address entry.Type: ApplicationFiled: April 1, 2019Publication date: July 25, 2019Inventors: Ayan Banerjee, Raghava K. Sivaramu, Srinivasan Ramabadran, Mehak Mahajan, Nataraj Batchu
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Publication number: 20190158356Abstract: Systems, methods, and computer-readable storage media for configuring a virtual port channel (VPC) domain. The disclosed technology involves determining that a first switch and a second switch are connected in a VPC domain, determining that the first switch is in a primary role, and determining a unique identifier for the first switch, a VPC portchannel number for the first switch, and an orphan port number for the first switch. Also, the first switch receives a unique identifier, a VPC portchannel number, and an orphan port number for the second switch. The first switch can associate the VPC portchannel number for the second switch and the VPC portchannel number for the first switch with a unified VPC portchannel number and create a first unique orphan port number for the first switch and a second unique orphan port number for the second switch.Type: ApplicationFiled: January 28, 2019Publication date: May 23, 2019Inventors: Santa Dasu, Mehak Mahajan, Sandeep Subramaniam, Sanjay Basavanakattimatha
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Publication number: 20190124038Abstract: A method is provided in one example embodiment and includes receiving at a controller an Address Resolution Protocol (“ARP”) packet from a source VXLAN Tunnel End Point (“VTEP”) serving a source host and identifying a destination, the source VTEP having assigned thereto a Virtual Network Identifier (“VNI”) identifying a VXLAN network to which the source VTEP and a plurality of other VTEPs belong, the ARP packet being received by the controller via a control plane; determining whether the received ARP packet is a request message; and, if the received ARP packet is a request message, determining whether address information for the identified destination is stored in a cache of the controller.Type: ApplicationFiled: December 19, 2018Publication date: April 25, 2019Inventors: Mehak Mahajan, Samir D. Thoria, Shyam Kapadia
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Publication number: 20190109759Abstract: Disclosed are systems, methods, and computer-readable storage media for synchronizing the secondary vPC node to the primary vPC node in a BFD protocol over a VxLAN channel with a remote node. In some embodiments of the present technology a primary vPC node can receive a packet from the remote node. The primary vPC node can then determine the packet includes either a MAC address corresponding to the primary vPC node or a secondary vPC node, and at least one inner packet identifier. Additionally, the primary networking switch can identify an access control list (ACL) entry from a set of ACL entries based on the at least one inner packet identifier. Subsequently, based on the ACL entry, the primary vPC node can generate a copy of the packet. After which, the primary vPC node can transmit the packet to the secondary vPC node.Type: ApplicationFiled: November 26, 2018Publication date: April 11, 2019Inventors: Vengada Prasad Govindan, Ayan Banerjee, Mehak Mahajan, Abhayraj Kuldip Gidwani, Mudigonda Jwala Mallik
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Patent number: 10250399Abstract: In accordance with one example embodiment, a system configured for programming a network layer multicast address entry in a routing table of an ingress line card module is disclosed. The network layer multicast address entry includes a network layer address associated with at least one egress line card. The system is further configured for programming a data link layer multicast routing address entry in a routing table of a fabric card module in which the data link layer multicast routing address entry corresponds to the network layer multicast address entry.Type: GrantFiled: June 9, 2015Date of Patent: April 2, 2019Assignee: CISCO TECHNOLOGY, INC.Inventors: Ayan Banerjee, Raghava K. Sivaramu, Srinivasan Ramabadran, Mehak Mahajan, Nataraj Bacthu
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Patent number: 10243916Abstract: A method is provided in one example embodiment and includes receiving at a controller an Address Resolution Protocol (“ARP”) packet from a source VXLAN Tunnel End Point (“VTEP”) serving a source host and identifying a destination, the source VTEP having assigned thereto a Virtual Network Identifier (“VNI”) identifying a VXLAN network to which the source VTEP and a plurality of other VTEPs belong, the ARP packet being received by the controller via a control plane; determining whether the received ARP packet is a request message; and, if the received ARP packet is a request message, determining whether address information for the identified destination is stored in a cache of the controller.Type: GrantFiled: April 7, 2016Date of Patent: March 26, 2019Assignee: CISCO TECHNOLOGY, INC.Inventors: Mehak Mahajan, Samir D. Thoria, Shyam Kapadia
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Patent number: 10193750Abstract: Systems, methods, and computer-readable storage media for configuring a virtual port channel (VPC) domain. The disclosed technology involves determining that a first switch and a second switch are connected in a VPC domain, determining that the first switch is in a primary role, and determining a unique identifier for the first switch, a VPC portchannel number for the first switch, and an orphan port number for the first switch. Also, the first switch receives a unique identifier, a VPC portchannel number, and an orphan port number for the second switch. The first switch can associate the VPC portchannel number for the second switch and the VPC portchannel number for the first switch with a unified VPC portchannel number and create a first unique orphan port number for the first switch and a second unique orphan port number for the second switch.Type: GrantFiled: September 7, 2016Date of Patent: January 29, 2019Assignee: CISCO TECHNOLOGY, INC.Inventors: Santa Dasu, Mehak Mahajan, Sandeep Subramaniam, Sanjay Basavanakattimatha
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Patent number: 10142163Abstract: Disclosed are systems, methods, and computer-readable storage media for synchronizing the secondary vPC node to the primary vPC node in a BFD protocol over a VxLAN channel with a remote node. In some embodiments of the present technology a primary vPC node can receive a packet from the remote node. The primary vPC node can then determine the packet includes either a MAC address corresponding to the primary vPC node or a secondary vPC node, and at least one inner packet identifier. Additionally, the primary networking switch can identify an access control list (ACL) entry from a set of ACL entries based on the at least one inner packet identifier. Subsequently, based on the ACL entry, the primary vPC node can generate a copy of the packet. After which, the primary vPC node can transmit the packet to the secondary vPC node.Type: GrantFiled: March 7, 2016Date of Patent: November 27, 2018Assignee: CISCO TECHNOLOGY, INCInventors: Vengada Prasad Govindan, Ayan Banerjee, Mehak Mahajan, Abhayraj Kuldip Gidwani, Mudigonda Jwala Mallik
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Publication number: 20180176181Abstract: In an example, there is disclosed a network switch, including: an ingress interface; an egress interface; an endpoint repository network interface; and one or more logic elements including an endpoint admission control engine to: receive a packet on the ingress interface, the packet having an associated source Internet protocol (IP) address and virtual network identifier (VNI); query an endpoint repository via the endpoint repository network interface for the source IP address and VNI; determine that the source IP address and VNI are found in an endpoint repository database of the endpoint repository; and forward the packet to a destination IP address via the egress interface.Type: ApplicationFiled: March 28, 2017Publication date: June 21, 2018Applicant: CISCO TECHNOLOGY, INC.Inventors: Lei Fu, Edward Tung Thanh Pham, Huilong Huang, Srividya S. Vemulakonda, Mehak Mahajan, Shyam Kapadia
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Patent number: 9992111Abstract: In one embodiment an approach is provided to efficiently program routes on line cards and fabric modules in a modular router to avoid hot spots and thus avoid undesirable packet loss. Each fabric module includes two separate processors or application specific integrated circuits (ASICs). In another embodiment, each fabric module processor is replaced by a pair of fabric module processors arranged in series with each other, and each processor is responsible for routing only, e.g., IPv4 or IPv6 traffic. The pair of fabric module processors communicates with one another via a trunk line and any packet received at either one of the pair is passed to the other of the pair before being passed back to a line card.Type: GrantFiled: January 21, 2016Date of Patent: June 5, 2018Assignee: Cisco Technology, Inc.Inventors: Ayan Banerjee, Raghava Sivaramu, Ambrish Mehta, Swaminathan Narayanan, Shiv Saini, Mehak Mahajan
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Publication number: 20180069754Abstract: Systems, methods, and computer-readable storage media for configuring a virtual port channel (VPC) domain. The disclosed technology involves determining that a first switch and a second switch are connected in a VPC domain, determining that the first switch is in a primary role, and determining a unique identifier for the first switch, a VPC portchannel number for the first switch, and an orphan port number for the first switch. Also, the first switch receives a unique identifier, a VPC portchannel number, and an orphan port number for the second switch. The first switch can associate the VPC portchannel number for the second switch and the VPC portchannel number for the first switch with a unified VPC portchannel number and create a first unique orphan port number for the first switch and a second unique orphan port number for the second switch.Type: ApplicationFiled: September 7, 2016Publication date: March 8, 2018Inventors: Santa Dasu, Mehak Mahajan, Sandeep Subramaniam, Sanjay Basavanakattimatha
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Publication number: 20170295130Abstract: A method is provided in one example embodiment and includes receiving at a controller an Address Resolution Protocol (“ARP”) packet from a source VXLAN Tunnel End Point (“VTEP”) serving a source host and identifying a destination, the source VTEP having assigned thereto a Virtual Network Identifier (“VNI”) identifying a VXLAN network to which the source VTEP and a plurality of other VTEPs belong, the ARP packet being received by the controller via a control plane; determining whether the received ARP packet is a request message; and, if the received ARP packet is a request message, determining whether address information for the identified destination is stored in a cache of the controller.Type: ApplicationFiled: April 7, 2016Publication date: October 12, 2017Applicant: CISCO TECHNOLOGY, INC.Inventors: Mehak Mahajan, Samir D. Thoria, Shyam Kapadia
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Publication number: 20170257260Abstract: Disclosed are systems, methods, and computer-readable storage media for synchronizing the secondary vPC node to the primary vPC node in a BFD protocol over a VxLAN channel with a remote node. In some embodiments of the present technology a primary vPC node can receive a packet from the remote node. The primary vPC node can then determine the packet includes either a MAC address corresponding to the primary vPC node or a secondary vPC node, and at least one inner packet identifier. Additionally, the primary networking switch can identify an access control list (ACL) entry from a set of ACL entries based on the at least one inner packet identifier. Subsequently, based on the ACL entry, the primary vPC node can generate a copy of the packet. After which, the primary vPC node can transmit the packet to the secondary vPC node.Type: ApplicationFiled: March 7, 2016Publication date: September 7, 2017Inventors: Vengada Prasad Govindan, Ayan Banerjee, Mehak Mahajan, Abhayraj Kuldip Gidwani, Mudigonda Jwala Mallik
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Patent number: 9742673Abstract: A plurality of line cards with each line card having a respective network forwarding engine and a respective outgoing interface (OIF) list and at least one fabric module communicatively coupled with each line card with each fabric module can have a respective network forwarding engine. The local OIF list can be asymmetrically programmed. The network forwarding engine of a line card can be configured to receive a multicast packet, compare a multicast address associate with the received multicast packet with entries in the local OIF list of the line card and forward the received multicast packet to at least one interface associated with the multicast address in response to the comparison resulting in a match.Type: GrantFiled: September 4, 2014Date of Patent: August 22, 2017Assignee: Cisco Technology, Inc.Inventors: Ayan Banerjee, Srinivasan Ramabadran, Mehak Mahajan, Raghava Sivaramu, Nataraj Bacthu, Raja Rao Tadimeti, Madhava Rao Cheethirala, Ramana Mellacheruvu
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Publication number: 20170214618Abstract: In one embodiment an approach is provided to efficiently program routes on line cards and fabric modules in a modular router to avoid hot spots and thus avoid undesirable packet loss. Each fabric module includes two separate processors or application specific integrated circuits (ASICs). In another embodiment, each fabric module processor is replaced by a pair of fabric module processors arranged in series with each other, and each processor is responsible for routing only, e.g., IPv4 or IPv6 traffic. The pair of fabric module processors communicates with one another via a trunk line and any packet received at either one of the pair is passed to the other of the pair before being passed back to a line card.Type: ApplicationFiled: January 21, 2016Publication date: July 27, 2017Inventors: Ayan Banerjee, Raghava Sivaramu, Ambrish Mehta, Swaminathan Narayanan, Shiv Saini, Mehak Mahajan