Patents by Inventor Sunanda L. Kommula
Sunanda L. Kommula 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: 11706196Abstract: A network device is configured to receive an inbound packet from a first server device via a network tunnel, the first inbound packet including an outer header, a virtual private network (VPN) label, an inner header, and a data payload, the inner header including an inner source IP address of a source virtual machine. The processors are also configured to determine a first tunnel identifier, determine, based on the inner source IP address, a second tunnel identifier associated with a second server device hosting the source virtual machine, compare the second tunnel identifier with the first tunnel identifier to determine whether the tunnel on which the first inbound packet was received is the same as a tunnel used for forwarding traffic to the source virtual machine, and drop the inbound packet when the second tunnel identifier does not match the first tunnel identifier.Type: GrantFiled: August 31, 2020Date of Patent: July 18, 2023Assignee: Juniper Networks, Inc.Inventors: Sunanda L. Kommula, Nitin Kumar, Dmitry A. Shokarev
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Patent number: 11070464Abstract: The techniques describe forwarding multicast traffic using a multi-level cache in a network device forwarding plane for determining a set of outgoing interfaces of the network device on which to forward the multicast traffic. For example, a multi-level cache is configured to store a multicast identifier of a multicast packet and multicast forwarding information associated with the multicast identifier, such as identification of one or more egress packet processors of the network device to which the multicast packet is to be sent for forwarding to the set of one or more egress network devices, and/or outgoing interfaces of the network device toward each egress network device of the set of one or more egress network devices. The multi-level cache is also configured to store respective multicast identifiers that are to be encapsulated with outgoing multicast packets that are forwarded to the set of one or more egress network devices.Type: GrantFiled: October 16, 2018Date of Patent: July 20, 2021Assignee: Juniper Networks, Inc.Inventors: Sri Karthik Goud Gadela, Sharmila Koppula, Babu Singarayan, Sunanda L. Kommula
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Patent number: 10764249Abstract: A network device is configured to receive an inbound packet from a first server device via a network tunnel, the first inbound packet including an outer header, a virtual private network (VPN) label, an inner header, and a data payload, the inner header including an inner source IP address of a source virtual machine. The processors are also configured to determine a first tunnel identifier, determine, based on the inner source IP address, a second tunnel identifier associated with a second server device hosting the source virtual machine, compare the second tunnel identifier with the first tunnel identifier to determine whether the tunnel on which the first inbound packet was received is the same as a tunnel used for forwarding traffic to the source virtual machine, and drop the inbound packet when the second tunnel identifier does not match the first tunnel identifier.Type: GrantFiled: November 30, 2017Date of Patent: September 1, 2020Assignee: Juniper Networks, Inc.Inventors: Sunanda L. Kommula, Nitin Kumar, Dmitry A. Shokarev
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Publication number: 20200120013Abstract: The techniques describe forwarding multicast traffic using a multi-level cache in a network device forwarding plane for determining a set of outgoing interfaces of the network device on which to forward the multicast traffic. For example, a multi-level cache is configured to store a multicast identifier of a multicast packet and multicast forwarding information associated with the multicast identifier, such as identification of one or more egress packet processors of the network device to which the multicast packet is to be sent for forwarding to the set of one or more egress network devices, and/or outgoing interfaces of the network device toward each egress network device of the set of one or more egress network devices. The multi-level cache is also configured to store respective multicast identifiers that are to be encapsulated with outgoing multicast packets that are forwarded to the set of one or more egress network devices.Type: ApplicationFiled: October 16, 2018Publication date: April 16, 2020Applicant: Juniper Networks, Inc.Inventors: Sri Karthik Goud Gadela, Sharmila Koppula, Babu Singarayan, Sunanda L. Kommula
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Patent number: 9806895Abstract: A system and method for selecting packets to be forwarded from redundant multicast streams. A primary multicast stream and a secondary multicast stream are received, wherein the primary multicast stream and the secondary multicast stream are redundant multicast streams received over disjoint multicast forwarding paths. A hardware-based analyzer in a forwarding plane of the network device is applied to detect when a quality of one of the primary multicast stream or the secondary multicast stream has fallen below a threshold. In response to detecting that a quality of one of the primary multicast stream or the secondary multicast stream has fallen below a threshold, selecting, via a thread executing in a forwarding component of the network device, a different one of the primary multicast stream or the secondary multicast stream having a quality that meets the threshold, wherein selecting includes dynamically rewriting next hop operations associated with the selected stream.Type: GrantFiled: March 31, 2015Date of Patent: October 31, 2017Assignee: Juniper Networks, Inc.Inventors: Sunanda L. Kommula, Alex Baban, Swamy Sadashivaiah Renu Kananda, Jamsheed R. Wania
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Patent number: 9015323Abstract: A global server load-balancing (GSLB) switch serves as a proxy to an authoritative DNS and communicates with numerous site switches that are coupled to host servers serving specific applications. The GSLB switch receives from site switches operational information regarding host servers within the site switches neighborhood. When a client program requests a resolution of a host name, the GSLB switch, acting as a proxy of an authoritative DNS, returns one or more ordered IP addresses for the host name. The IP addresses are ordered using metrics that include the information collected from the site switches or based on other metric information. Examples of metrics include weighted site, weighted IP, and active bindings metrics. The GSLB switch places the address that is deemed “best” at the top of the list.Type: GrantFiled: December 10, 2009Date of Patent: April 21, 2015Assignee: Brocade Communications Systems, Inc.Inventor: Sunanda L. Kommula
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Publication number: 20100153558Abstract: A global server load-balancing (GSLB) switch serves as a proxy to an authoritative DNS and communicates with numerous site switches that are coupled to host servers serving specific applications. The GSLB switch receives from site switches operational information regarding host servers within the site switches neighborhood. When a client program requests a resolution of a host name, the GSLB switch, acting as a proxy of an authoritative DNS, returns one or more ordered IP addresses for the host name. The IP addresses are ordered using metrics that include the information collected from the site switches or based on other metric information. Examples of metrics include weighted site, weighted IP, and active bindings metrics. The GSLB switch places the address that is deemed “best” at the top of the list.Type: ApplicationFiled: December 10, 2009Publication date: June 17, 2010Applicant: Foundry Networks, Inc.Inventor: Sunanda L. Kommula
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Patent number: 7676576Abstract: Server load-balancing operation-related data, such as data associated with a system configured for global server load balancing (GSLB) that orders IP addresses into a list based on a set of performance metrics, is tracked. Such operation-related data includes inbound source IP addresses (e.g., the address of the originator of a DNS request), the requested host and zone, identification of the selected “best” IP addresses resulting from application of a GSLB algorithm, and the selection metric used to decide on an IP address as the “best” one. The data includes a count of the selected “best” IP addresses selected via application of the GSLB algorithm, and for each of these IP addresses, the list of deciding performance metrics, along with a count of the number of times each of these metrics in the list was used as a deciding factor in selection of this IP address as the best one.Type: GrantFiled: February 28, 2003Date of Patent: March 9, 2010Assignee: Foundry Networks, Inc.Inventor: Sunanda L. Kommula
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Patent number: 7657629Abstract: A global server load-balancing (GSLB) switch serves as a proxy to an authoritative DNS and communicates with numerous site switches that are coupled to host servers serving specific applications. The GSLB switch receives from site switches operational information regarding host servers within the site switches neighborhood. When a client program requests a resolution of a host name, the GSLB switch, acting as a proxy of an authoritative DNS, returns one or more ordered IP addresses for the host name. The IP addresses are ordered using metrics that include the information collected from the site switches or based on other metric information. Examples of metrics include weighted site, weighted IP, and active bindings metrics. The GSLB switch places the address that is deemed “best” at the top of the list.Type: GrantFiled: February 28, 2003Date of Patent: February 2, 2010Assignee: Foundry Networks, Inc.Inventor: Sunanda L. Kommula