Methods and apparatus for using received signal strength information in a wireless system
Granted: April 20, 2021
Patent Number:
10986606
Disclosed are methods and systems for estimating a location of a wireless device. In some embodiments, received signal strength indication (RSSI) values of signals from a first wireless device are determined. A rate of motion of the first wireless device is then determined based on a rate at which the RSSI values vary with time. A machine learning model is conditionally updated based on the determined rate of motion, and path loss parameters are then derived from the machine learning…
Dynamic prefix list for route filtering
Granted: April 20, 2021
Patent Number:
10986024
In general, techniques are described for a dynamic prefix list for route filtering. In one example, a network device comprises a control unit comprising one or more processors; one or more interface cards coupled to the control unit; a routing protocol process configured to execute on the control unit to exchange, using the interface cards, routing protocol advertisements with a peer network device in accordance with a routing protocol; and a configuration database comprising a routing…
Systems and methods for a virtual network assistant
Granted: April 20, 2021
Patent Number:
10985969
Methods and apparatus for identifying the root cause of deterioration of system level experience (SLE). Offending network components that caused the SLE deterioration are identified and corrective actions are taken.
Optical protection switch with broadcast multi-directional capability
Granted: April 20, 2021
Patent Number:
10985859
An apparatus includes a first reconfigurable optical add/drop multiplexer (ROADM) to receive a first optical signal and a second ROADM to receive a second optical signal. The apparatus also includes a reconfigurable optical switch that includes a first switch, switchable between a first state and a second state, to transmit the first optical signal at the first state and block the first optical signal at the second state. The reconfigurable optical switch also includes a second switch,…
Methods and apparatus for a colorless directionless and super-channel contentionless (CDSC) optical network architecture
Granted: April 13, 2021
Patent Number:
10979788
In some embodiments, a system includes a super-channel multiplexer (SCM) and an optical cross connect (OXC) switch. The SCM is configured to multiplex a set of optical signals into a super-channel optical signal with a wavelength band. The OXC switch is configured to be operatively coupled to the SCM and a reconfigurable optical add-drop multiplexer (ROADM) degree. The OXC switch is configured to be located between the SCM and the ROADM degree and the OXC switch, the SCM, and the ROADM…
Node representations of packet forwarding path elements
Granted: April 13, 2021
Patent Number:
10979339
In one example, a method comprises receiving, by a forwarding manager for an internal forwarding path executed by at least one packet processor of a forwarding unit of a network device, one or more packet processing operations from a control unit of the network device; generating, by the forwarding manager based on the one or more packet processing operations, a plurality of nodes each comprising a unique token, wherein a first node of the plurality of nodes includes a token reference…
Dynamic application SLA metric generation, distribution, and intent-based SD-WAN link selection
Granted: April 13, 2021
Patent Number:
10979316
In general, the disclosure describes techniques for dynamic application service level agreement (SLA) metric generation, distribution, and intent-based Software-Defined Wide Area Network (SD-WAN) link selection. For instance, a network device may determine a metric associated with an application or application-group. The network device may send the metric to a controller, and in response may receive from the controller a recommended SLA metric associated with the application or…
Methods and apparatus relating to the supply of power to power over ethernet devices
Granted: April 13, 2021
Patent Number:
10976791
An access point, which is a Power over Ethernet (PoE) Powered Device (PD) measures input voltage and input current. The access point determines a power requirement of the access point based on the measured current, measured voltage, and information about power requirements of access point components or devices coupled to the access point a power requirement of the access point. The access point communicates the determined power request to a power sourcing equipment (PSE), e.g., a network…
Multi-layer statistical wireless terminal location determination
Granted: April 13, 2021
Patent Number:
10976406
Disclosed are embodiments for determining a location of a wireless terminal. The wireless terminal measures signal strength of a plurality of wireless transmitters. Based on this information, a plurality of location probability surfaces are generated. Each location probability surface indicates a plurality of probabilities that the wireless terminal is in each of a corresponding plurality of geographic regions. These probability surfaces are then averaged to determine a composite…
Generating a network security policy based on behavior detected after identification of malicious behavior
Granted: April 6, 2021
Patent Number:
10972508
A device receives information identifying malicious behavior by a compromised endpoint device associated with a network and traffic associated with the compromised endpoint device after the malicious behavior is identified. The device receives endpoint device information identifying other endpoint devices associated with the network, wherein the compromised endpoint device is not one of the other endpoint devices. The device receives network device information identifying network devices…
Distributed predictive packet quantity threshold reporting
Granted: April 6, 2021
Patent Number:
10972442
A first line card of a first network device may receive packets to be transmitted to a second line card of a second network device. The first line card may predict an earliest satisfaction time for satisfaction of a first packet quantity threshold of one or more packet quantity thresholds. The first line card may transmit the packets to the second line card. The first line card may determine whether a quantity of transmitted packets transmitted by the first line card satisfies the first…
Dynamic management of inline entries in hardware across protocols in a scaled environment
Granted: April 6, 2021
Patent Number:
10972402
Techniques within a network device to execute periodic packet management (PPM) used to determine the health of a network. The inline mode of periodic packet management may be more efficient than other modes of periodic packet management such as centralized mode or distributed mode. The number of inline entries for a given hardware table may be limited, which means that once the number of inline entries in the table has reached the size limit, then any new entries must be managed in the…
Scalable multi-tenant underlay network supporting multi-tenant overlay network
Granted: April 6, 2021
Patent Number:
10972386
Techniques are disclosed for scalable virtualization of tenants and subtenants on a virtualized computing infrastructure. In one example, a first controller for the virtualized computing infrastructure configures underlay network segments in the virtualized computing infrastructure by configuring respective Virtual Extensible Local Area Network (VXLAN) segments of a plurality of VXLAN segments of a VXLAN in a switch fabric comprising network switches. Each VXLAN segment provides underlay…
Network device configuration using a message bus
Granted: April 6, 2021
Patent Number:
10972342
In general, techniques are described for managing, with a network controller for a computer network, the configuration of network devices within the computer network using one or more message buses. In some examples, a controller includes processing circuitry coupled to memory. The processing circuitry is configured to generate data for implementing a configuration change for a network device and store, to a configuration database, the data for implementing the configuration change for…
Maintaining a DNS store for control plane restart or failover
Granted: April 6, 2021
Patent Number:
10969984
A network device may store domain name system (DNS) information in a DNS file in a first DNS store of a first control plane component included in the network device, the DNS information being associated with a plurality of DNS entries stored in a first DNS memory of the first control plane component; may transfer, based on storing the DNS information in the DNS file in the first DNS store, a copy of the DNS file from the first DNS store to a second DNS store of a second control plane…
Display screen or portion thereof with graphical user interface
Granted: April 6, 2021
Patent Number:
D915423
Duplicate address detection for ranges of global IP addresses
Granted: March 30, 2021
Patent Number:
10965637
An example network device determines to assign a number of global Internet protocol (IP) addresses to respective network interfaces, determines a subnetwork for the network interfaces, determines a prefix corresponding to the subnetwork, determines a first global IP address having the prefix, determines a range value that is equal to or greater than the number of global IP addresses, generates a message according to Duplicate Address Detection Protocol (DAD) including data indicating…
Inter-network service chaining
Granted: March 30, 2021
Patent Number:
10965592
Techniques are described in which a centralized controller constructs a service chain between a bare metal server (BMS) and a virtual execution element (e.g., virtual machine or container), or in some instances a remote BMS, across a plurality of networks. In some examples, the controller may construct a service chain between a BMS and a virtual execution element or remote BMS using Ethernet Virtual Private Network (EVPN)—Virtual Extensible Local Area Network (VXLAN) and Internet…
Normal incidence photodetector with self-test functionality
Granted: March 30, 2021
Patent Number:
10965369
Photonically integrated normal incidence photodetectors (NIPDs) and associated in-plane waveguide structures optically coupled to the NIPDs can be configured to allow for both in-plane and normal-incidence detection. In photonic circuits with light-generation capabilities, such as integrated optical transceivers, the ability of the NIPDs to detect in-plane light is used, in accordance with some embodiments, to provide self-test functionality.
Real-time application-driven synthetic probing
Granted: March 23, 2021
Patent Number:
10958555
In general, the disclosure describes techniques for evaluating application quality of experience metrics over a software-defined wide area network. For instance, a network device may receive an application data packet of a data flow for an application and send a first set of probe packets, configured according to an initial probing profile, over each of one or more links. The network device may monitor the data flow to determine one or more characteristics of the data flow and generate…
