Patents Assigned to Cisco Technology, Inc.
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Patent number: 11949597Abstract: In an example method, an instruction to begin monitoring incoming traffic of a multicast data flow is received by a router. The instruction is received from a downstream router. The example method further includes monitoring incoming traffic of the multicast data flow. At least partly in response to determining that an expected amount of the incoming traffic of the multicast data flow is being received at the router, reporting to a network administrator device, a location of the router in the multicast data flow. Further, at least partly in response to determining that an expected amount of the incoming traffic of the multicast a data flow is not being received, sending, by the router and to an upstream router, an instruction to begin monitoring incoming traffic of the multicast data flow.Type: GrantFiled: December 6, 2021Date of Patent: April 2, 2024Assignee: Cisco Technology, Inc.Inventors: Mankamana Prasad Mishra, Anuj Budhiraja, Nitin Kumar, Sridhar Santhanam
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Patent number: 11947239Abstract: The present disclosure provide for active boost in an electrical driver via a frequency comparator, configured to determine operational characteristics of an electrical circuit connected to an optical modulator based on a frequency difference between a ring oscillator and the clock signal; an electrical driver configured to drive a phase shift of a first optical signal carried on a first arm relative to a second optical signal carried on a second arm of an optical modulator, the electrical driver comprising: a first signal pathway, connected to the first arm of the optical modulator, wherein the first signal pathway includes: an adjustable gain inverter, electrically connected to first and second nodes; a fixed gain inverter, electrically connected to the first and second nodes; an inductor electrically connected between the second node and a third node; and a non-inverting amplifier connected between the third node and the first node.Type: GrantFiled: August 18, 2022Date of Patent: April 2, 2024Assignee: Cisco Technology, Inc.Inventors: Craig S. Appel, Peter C. Metz
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Patent number: 11949659Abstract: A first packet of a packet flow is received at a classifying network device. The first packet is forwarded from the classifying network device to a firewall network device. An indication that the packet flow is to be offloaded is received at the classifying network device. Data is stored at the classifying network device indicating that the packet flow is to be offloaded. A non-control packet of the packet flow is received at the classifying network device. A determination is made that the non-control packet belongs to the packet flow by comparing data contained in the non-control packet to the stored data. The non-control packet of the packet flow is directed to a processing entity in response to the determining. A control packet of the packet flow is received at the classifying network device. The control packet of the packet flow is directed to the firewall network device.Type: GrantFiled: July 13, 2021Date of Patent: April 2, 2024Assignee: CISCO TECHNOLOGY, INC.Inventors: Pradeep Patel, Jonathan A. Kunder, Ashish K. Dey, Andrew E. Ossipov, Jianxin Wang
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Patent number: 11949602Abstract: An endpoint group (EPG) can be stretched between the sites so that endpoints at different sites can be assigned to the same stretched EPG. Because the sites can use different bridge domains when establishing the stretched EPGs, the first time a site transmits a packet to an endpoint in a different site, the site learns or discovers a path to the destination endpoint. The site can use BGP to identify the site with the host and use a multicast tunnel to reach the site. A unicast tunnel can be used to transmit future packets to the destination endpoint. Additionally, a stretched EPG can be segmented to form a micro-stretched EPG. Filtering criteria can be used to identify a subset of the endpoints in the stretched EPG that are then assigned to the micro-stretched EPG, which can have different policies than the stretched EPG.Type: GrantFiled: September 21, 2021Date of Patent: April 2, 2024Assignee: Cisco Technology, Inc.Inventors: Javed Asghar, Sridhar Vallepalli, Umamaheswararao Karyampudi, Srinivas Kotamraju
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Patent number: 11949498Abstract: An optical modulator comprises, as optical modulator components, first and second transmitter chains and a first optical time division multiplex, OTDM, generator arranged to receive time interleaved optical pulses generated by one of said optical modulator components.Type: GrantFiled: November 2, 2021Date of Patent: April 2, 2024Assignee: CISCO TECHNOLOGY, INC.Inventors: Thomas Duthel, Helmut Preisach
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Patent number: 11950128Abstract: A control plane (CP) function for session management performs a procedure for establishing local traffic offloading for a user equipment (UE) in a mobile network having an Evolved Packet Core (EPC) and Fifth Generation (5G) converged core that supports communications via a Long-Term Evolution (LTE) radio access network (RAN) and a Fifth Generation (5G) RAN. Initially, a connection is established for the UE via the LTE RAN that includes a first bearer between the LTE RAN and a central serving gateway-user plane (SGW-U) at a central location, and a second bearer between the central SGW-U and a central packet gateway-user plane (PGW-U) at the central location. The CP function inserts a local SGW-U at an edge location and subsequently inserts a local intermediate user plane function (I-UPF) with an uplink classifier (UL-CL) at the edge location for enabling edge offload of traffic from the LTE RAN.Type: GrantFiled: September 30, 2021Date of Patent: April 2, 2024Assignee: CISCO TECHNOLOGY, INC.Inventors: Irfan Ali, Ravi Kiran Guntupalli
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Patent number: 11949526Abstract: Presented herein is a stage area for “focused” video that is configured to allow for dynamic layout changes during an online video conference or meeting. By providing a user interface environment that allows a user (meeting participant) to customize the stage, each participant can choose their own view, and the meeting host can fully customize a view for every participant in the meeting.Type: GrantFiled: November 22, 2021Date of Patent: April 2, 2024Assignee: CISCO TECHNOLOGY, INC.Inventors: Yun Teng, Wen Jiang, Shujun Han, Yiqun Wang, Lin Wang
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Patent number: 11949593Abstract: Stateless address translation at an Autonomous System (AS) boundary for host privacy may be provided. An address associated with a host device in the AS may be received. The address may comprise a network prefix and an interface identifier (ID). Then a cypher value may be assigned to a cypher bit range in the network prefix. The cypher value may be associated with a first cypher algorithm of a plurality of cypher algorithms. Next, the address may be encoded wherein encoding the address comprises applying the first cypher algorithm to encode a coding bit range in the address that is less significant than the cypher bit range. The encoded address may then be used for flows from the host that egress the AS.Type: GrantFiled: May 10, 2022Date of Patent: April 2, 2024Assignee: Cisco Technology, Inc.Inventors: Pradeep Kumar Kathail, Eric Voit, David A. Maluf
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Patent number: 11948728Abstract: In one embodiment, an apparatus includes an array of transformers and common mode chokes each comprising a magnetic core and windings wound around the magnetic core at opposing locations on the magnetic core, and a retaining groove on each of the magnetic cores to maintain the windings in their opposing locations on the magnetic core. The transformers and common mode chokes are positioned in the array with the windings on each of the magnetic cores located offset to the windings of adjacent magnetic cores in the array to reduce crosstalk and improve common mode noise rejection.Type: GrantFiled: March 4, 2021Date of Patent: April 2, 2024Assignee: CISCO TECHNOLOGY, INC.Inventors: Jianquan Lou, Xiaoxia Zhou, Hailong Zhang, Yingchun Shu, Alpesh U. Bhobe
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Patent number: 11949596Abstract: Data defining egress bandwidth utilization on an interface of a node may be obtained and a congestion event may be detected based at least in part on an average interface utilization (Y) being greater than a first threshold (X1). A plurality of alternate links that can accommodate excess bandwidth without exceeding the first threshold may be identified. Flows associated with the plurality of alternate links may be filtered based at least in part on business logic macro flow filtering. It may be determined whether the plurality of alternate links pass a diffusing update algorithm (DUAL)-based loop-free path-finding algorithm (LPA) analysis for the destination node prefixes whether the destination node prefixes pass the DUAL-based LPA analysis for the at least one of the plurality of alternate links and a plurality of next hops associated with the at least one of the plurality of alternate links.Type: GrantFiled: July 17, 2023Date of Patent: April 2, 2024Assignee: Cisco Technology, Inc.Inventors: Navin Ashok Suvarna, Sridhar Vaidyanathan, Praveen Shrinivas Poojary, Dhrumil Prajapati
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Patent number: 11950218Abstract: Presented herein are techniques to facilitate the configuration of hybrid cells to support shared cell and unique cell operating modes for user equipment. In one example, a method may include obtaining a registration request for a user equipment (UE) in which the mobile network includes a radio access network (RAN) comprising a plurality of radio units (RUs) in which each RU provides a shared cell that is shared with at least one other RU and each RU also provides a unique cell that is not shared with any other RU. The method may further include determining an operating mode for the UE in which the operating mode indicates whether the UE is to operate in a shared cell or a unique cell operating mode, and facilitating connection of the UE to one of the shared cell or the unique cell of an RU based on the operating mode.Type: GrantFiled: May 14, 2021Date of Patent: April 2, 2024Assignee: CISCO TECHNOLOGY, INC.Inventors: Srinath Gundavelli, Indermeet Singh Gandhi, Mark Grayson, Arun G. Khanna
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Publication number: 20240106622Abstract: In one embodiment, the disclosure includes a network node synchronization system. The system may include a first node. The first node may include a first host card comprising a first (TOD) time of day counter, a first digital signal processor (DSP) comprising a first DSP counter; and a first optical communication device comprising a first DSP communication channel, wherein the first DSP communication channel transports DSP frames. In various embodiments, the DSP is a coherent DSP.Type: ApplicationFiled: September 12, 2023Publication date: March 28, 2024Applicant: Cisco Technology, Inc.Inventors: Mike A. Sluyski, Glen W. Miller, Jim Duda, Markus Weber
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Publication number: 20240106745Abstract: Personal network Software Defined-Wide Area Networks (SD-WANs) with attested permissions may be provided. A first one of a plurality Personal Area Network (PAN) devices in a PAN may seed a routing table entry for at least one application that the first one of the plurality PAN devices supports. The routing table entry may include at least one characteristic associated with an egress link between the first one of the plurality PAN devices and a device outside of the PAN. The routing table entry may be exchanged among the plurality of PAN devices in the PAN. Then data may be routed, based on the exchanged routing table entry, in the PAN through the first one of the plurality PAN devices through the egress link to the device outside of the PAN.Type: ApplicationFiled: September 26, 2022Publication date: March 28, 2024Applicant: Cisco Technology, Inc.Inventors: Eric Voit, Pascal Thubert, Pradeep Kumar Kathail
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Patent number: 11943078Abstract: Techniques for a hub node, provisioned in a site of a hub and spoke overlay network, to receive, store, and/or forward network routing information associated with a spoke, and send packets directly to spoke(s) that are remote from the hub node. A first hub node may receive a network advertisement including a border gateway protocol (BGP) large community string from a first spoke local to the first hub node. The first hub node may send the BGP large community string to a second hub node remote from the first hub node. The second hub node may decode network routing information from the BGP large community string and store the network routing information locally. The second hub node may send a packet from a second spoke local to the second hub node directly to the first spoke without the data packet being routed via the first hub node.Type: GrantFiled: July 8, 2022Date of Patent: March 26, 2024Assignee: Cisco Technology, Inc.Inventors: Hari Shankar, Rashmi Garg, Benoit Ganne, Jerome Tollet, Nathan Skrzypczak
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Patent number: 11941710Abstract: According to one or more embodiments of the disclosure, a device obtains one or more System Configuration Description Language files regarding a power utility automation network. The device also obtains traffic data regarding traffic in the power utility automation network. The device trains, using the one or more System Configuration Description Language files and the traffic data, a behavioral model for the power utility automation network that models traffic in the power utility automation network. The device initiates use of the behavioral model in the power utility automation network to identify anomalous traffic behavior in the power utility automation network.Type: GrantFiled: January 14, 2021Date of Patent: March 26, 2024Assignee: CISCO TECHNOLOGY, INC.Inventors: Maik Guenter Seewald, Laurent Jean Charles Hausermann, André Guérard
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Patent number: 11943137Abstract: Systems, methods, and computer-readable media are disclosed for proactively and adaptively rerouting data to a healthier path through network, as part of flow provisioning, based on environmental variables associated with devices in the network. The present technology includes identifying a routing path for forwarding traffic flows in a network, receiving diagnostic data of a routing device on the routing path. The diagnostic data include one or more environmental parameters associated with internal state and surroundings of the routing device. Further, the present technology includes comparing the diagnostic data of the routing device with a predetermined threshold and modifying, prior to a failure of the routing device, the routing path to bypass the routing device for at least a portion of the traffic flows based on the comparison between the diagnostic data of the routing device and the predetermined threshold.Type: GrantFiled: April 15, 2022Date of Patent: March 26, 2024Assignee: Cisco Technology, Inc.Inventors: Hemamalini Subash, David John Zacks, N Shalini Srinivasan, Rashmi Nikhil Patil, Joel Abraham Obstfeld
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Patent number: 11940233Abstract: In one embodiment, a thermal management device includes a heat sink base and heat sink fins comprising a single element formed from a plurality of graphene layers with carbon nanotubes interposed between the graphene layers. A method is also disclosed herein.Type: GrantFiled: January 21, 2021Date of Patent: March 26, 2024Assignee: CISCO TECHNOLOGY, INC.Inventors: M. Baris Dogruoz, Mehmet Onder Cap, D. Brice Achkir, Joel Richard Goergen
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Patent number: 11943329Abstract: Parallel Redundancy Protocol (PRP) using non-overlapping Resource Unit (RU) groupings may be provided. A first computing device may associate to a first Access Point (AP) at a virtual Media Access Control (MAC) address. Next, the first computing device may associate to a second AP at the virtual MAC address. Then data from a data frame may be replicated to a first one or more RUs in a channel. The first one or more RUs may be assigned to the first AP. Data from the data frame may then be replicated to a second one or more RUs in the channel. The second one or more RUs may be assigned to the second AP and may not overlap the first one or more RUs.Type: GrantFiled: February 22, 2022Date of Patent: March 26, 2024Assignee: Cisco Technology, Inc.Inventors: Robert E. Barton, Vishal Satyendra Desai, Jerome Henry, Malcolm Muir Smith
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Patent number: 11940661Abstract: A split enclosure apparatus for fan-less cooling may be provided. The apparatus may comprise a device and a housing. The device may comprise a plurality of components. The housing may enclose the device and may comprise a first external surface, a second external surface, and a joint between the first external surface and the second external surface. The first external surface may be dedicated to cooling a first one of the plurality of components. The second external surface may be dedicated to cooling a second one of the plurality of components. The joint between the first external surface and the second external surface may be electrically conductive and thermally resistive.Type: GrantFiled: December 17, 2021Date of Patent: March 26, 2024Assignee: Cisco Technology, Inc.Inventors: Joseph F. Jacques, Edward John Kliewer, Harrison S. Teplitz
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Patent number: 11943131Abstract: A method comprises: by a controller to communicate with devices of a network, storing classifiers assigned to groups of the devices to identify device commonality for each group; associating, to the classifiers, historical probabilities of success with which an automated response executed by one or more of the devices remediates a device alarm event; when a device of the devices reports the device alarm event, identifying each classifier to which the device belongs, each historical probability for each classifier, and a rule with classifier thresholds for the automated response; determining to execute the automated response on the device by evaluating the rule using each historical probability and the classifier thresholds; after the automated response is executed, performing a service test supported across the devices, and monitoring test results from the service test; and after the service test, updating each historical probability using the test results.Type: GrantFiled: July 26, 2023Date of Patent: March 26, 2024Assignee: CISCO TECHNOLOGY, INC.Inventors: Steven Michael Holl, Jason A. Kuhne, Jason Michael Coleman, Gonzalo A. Salgueiro