Cisco Patent Grants

Liquid cooling distribution in a modular electronic system

Granted: January 14, 2025
Patent Number: 12200906
A network communications device includes a chassis, a plurality of modules removably inserted into a plurality of slots in the chassis. A coolant is delivered to a first group of the plurality of modules with a first flow control valve in a first cooling loop and the coolant is delivered to a second group of the plurality of modules with a second flow control valve in a second cooling loop. The network communication device further includes a plurality of sensors for monitoring a…

Network environment health monitoring

Granted: January 14, 2025
Patent Number: 12200475
Network environment health monitoring is provided by receiving an alert indicating that a first station (STA) is experiencing a connection with a first Access Point (AP) below a quality threshold; identifying a set of APs connected to a shared network with the first AP within one hop of the first AP; aggregating signal metrics for the first STA from the first AP and each AP of the set of APs; identifying a cause for the connection performing below the quality threshold based on the…

Confidence scoring for detectors used to detect anomalous behavior

Granted: January 14, 2025
Patent Number: 12199996
A computer-implemented method of determining whether to configure a detection comprised within a query is disclosed. The method includes analyzing a query to determine clauses within the query that identify logs relevant to the detection comprised within the query. The method further includes determining a statistical distribution for modeling a likely hit rate of the detection. Additionally, the method includes updating the statistical distribution with information associated with an…

Network enclave attestation for network and compute devices

Granted: January 14, 2025
Patent Number: 12199969
An enclave manager of a network enclave obtains a request to retrieve configuration information and state information corresponding to compute devices and network devices comprising a network enclave. The request specifies a set of parameters of the configuration information and the state information usable to generate a response to the request. The enclave manager evaluates the compute devices, the network devices, and network connections among these devices within the network enclave…

Optimizing IPSec for hierarchical SD-WAN

Granted: January 14, 2025
Patent Number: 12199868
According to some embodiments, a method is performed by a software defined wide area network (SD-WAN) edge router in a hierarchical SD-WAN network comprising a plurality of edge routers and a plurality of border routers. The method comprises: originating a SD-WAN system route for advertising reachability to the edge router, the system route comprising an encryption key associated with the edge router; and transmitting the system route to one or more SD-WAN border routers. The method may…

Data network duplicate flow detection in hardware with line rate throughput

Granted: January 14, 2025
Patent Number: 12199859
Techniques for detecting duplicate data flows. A data packet of a data flow is received by computer hardware the data packet having a first five tuple, an ingress interface and a VLAN tag. Data is sent to a central processing unit. The central processing unit installs policy tiles into a policy tile database of the computer hardware, the policy tiles including the first five tuple, the first ingress interface and the first VLAN tag. A second data packet is received and compared with the…

Integration of cloud-based and non-cloud-based data in a data intake and query system

Granted: January 14, 2025
Patent Number: 12197442
A software module ingests data into a data intake and query system. At least a portion of the data is cloud data. The software module includes an event type definition that specifies a type of data to be ingested by the software module, a first tag that associates ingested data of the event type with a data model, and a second tag that designates ingested data of the event type as cloud data. The ingested data is stored in a data repository, and subsequently a search query that includes…

Using persistent memory to enable restartability of bulk load transactions in cloud databases

Granted: January 14, 2025
Patent Number: 12197396
Systems, methods, and computer-readable media for managing storing of data in a data storage system using a client tag. In some examples, a first portion of a data load as part of a transaction and a client identifier that uniquely identifies a client is received from the client at a data storage system. The transaction can be tagged with a client tag including the client identifier and the first portion of the data load can be stored in storage at the data storage system. A first log…

Method and apparatus for efficient synchronization of search heads in a cluster using digests

Granted: January 14, 2025
Patent Number: 12197394
Embodiments of the present disclosure provide techniques for efficiently and accurately performing propagation of search-head specific configuration customizations across multiple individual configuration files of search heads of a cluster for a consistent user experience. The cluster of search heads may be synchronized such that the search heads operate to receive the configuration or knowledge object customizations from one or more clients from a central or lead search head. To reduce…

Network slice support of respective transport protocols

Granted: January 7, 2025
Patent Number: 12193078
Techniques are described herein for network slice support of respective transport protocols. In one example, a session management function obtains, from a user equipment, a request for a network slice identifier in a network that includes a plurality of network slices each configured to support a respective transport protocol. In response to the request, the session management function identifies a first transport protocol of the respective transport protocols by which the user equipment…

Clock jitter and spurious tone cancellation system using optical delay

Granted: January 7, 2025
Patent Number: 12191870
Techniques to reduce or eliminate phase noise and jitter from a noisy clock signal. A method includes generating an electrical clock signal, generating a delayed optical clock signal based on the electrical clock signal, detecting a phase difference between the electrical clock signal and the delayed optical clock signal, and processing, based on the phase difference, the electrical clock signal to obtain a reduced phase noise version of the electrical clock signal.

Wireless dynamic file exchange

Granted: January 7, 2025
Patent Number: 12192889
Wireless dynamic file exchange is provided by, in response to a triggering network condition occurring, initiating an exchange of a parameter file including non-layer two content via a 802.11 message, such as a Generic Advertisement Service (GAS) message between an access point (AP) and a station (STA) connected to the AP; and in response to determining that the exchange was unsuccessful, terminating a connection between the AP and the STA. The parameter file may be sent over several…

Identifying rogue wireless devices using MAC address rotation techniques

Granted: January 7, 2025
Patent Number: 12192770
A method is provided that is performed in a wireless network to detect a rogue wireless device. The method comprises detecting a suspect wireless device in the wireless network based on messages transmitted by the suspect wireless device using a first Media Access Control (MAC) address that is also used by a valid wireless device in the wireless network. When a suspect wireless device is detected, the method next includes sending to the valid wireless device in the wireless network a…

Systems and methods for providing dynamic quantum cloud security through entangled particle distribution

Granted: January 7, 2025
Patent Number: 12192344
Disclosed is a method of establishing secure communications between nodes in a cloud environment. The method includes receiving a log-in of a first user, receiving a log-in of a second user and presenting to the first user one or more options to use a secure inter-user communication security service leveraging quantum teleportation in order to communication with the second user, wherein the secure inter-user communication security service optionally uses a quantum EPR processor (QEP).…

Secure access service edge function with configured metric collection intelligence

Granted: January 7, 2025
Patent Number: 12192192
In one embodiment, a method herein comprises: receiving, at a device, a registration request from a telemetry exporter that transmits telemetry data; generating, by the device, a telemetry configuration file for the telemetry exporter, the telemetry configuration file defining a policy for transmission of telemetry data from the telemetry exporter and an authentication token for the telemetry exporter; sharing, by the device, the policy with a security enforcer; and sending, by the…

System and method of assigning reputation scores to hosts

Granted: January 7, 2025
Patent Number: 12192078
A method provides for receiving network traffic from a host having a host IP address and operating in a data center, and analyzing a malware tracker for IP addresses of hosts having been infected by a malware to yield an analysis. When the analysis indicates that the host IP address has been used to communicate with an external host infected by the malware to yield an indication, the method includes assigning a reputation score, based on the indication, to the host. The method can…

Software defined access fabric without subnet restriction to a virtual network

Granted: January 7, 2025
Patent Number: 12192057
Systems, methods, and computer-readable storage media are provided for provisioning a common subnet across a number of subscribers and their respective virtual networks using dynamically generated network policies that provide isolation between the subscribers. The dynamic generation of the network policies is performed when a host (e.g. client) is detected (via a switch) as the host joins the computing network via virtual networks. This ability to configure a common subnet for all the…

Interrupt cognizant RF tuning

Granted: January 7, 2025
Patent Number: 12192053
The disclosed technology relates to determining a period in which a non-urgent RRM update should be deferred. The method may comprise applying a first update to an existing configuration of the plurality of wireless access points in the network based on an analysis of telemetry received from the plurality of wireless access points received over a period spanning at least two busy periods. The method may further comprise applying a second update that modifies the first preferred network…

Differential differencing transimpedance amplifier for coherent applications

Granted: January 7, 2025
Patent Number: 12191915
Techniques for implementing a differential differencing TIA for coherent applications are disclosed. A method includes receiving first and second optical signals from a 90 degree optical hybrid that receives a coherent optical signal, wherein the first and second optical signals each include one pair of sum and difference signals output by the 90 degree optical hybrid, generating, based on the first optical signal and from a first photo diode, a first differential signal, generating,…

Laserless optical transceiver

Granted: January 7, 2025
Patent Number: 12191910
An optical module includes an optical source, a first polarization splitter-rotator, a second polarization splitter-rotator, a first port, a second port, a third port, and a fourth port. The optical source produces an optical signal. The first polarization splitter-rotator generates a first source optical signal based at least in part on the optical signal. The second polarization splitter-rotator generates a second source optical signal based at least in part on the optical signal. The…