公开(公告)号：US12244560B2

公开(公告)日：2025-03-04

申请号：US18478942

申请日：2023-09-29

Applicant: Cisco Technology, Inc.

Inventor： Prakash C. Jain ,  Sanjay Kumar Hooda ,  Satish Kumar Kondalam ,  Vikram Vikas Pendharkar ,  Anoop Vetteth ,  Solomon T Lucas

IPC: H04L9/40 ,  H04L41/0894 ,  H04L47/70

Abstract: This disclosure describes techniques to operate a control plane in a network fabric. The techniques include determining a stateless rule corresponding to communication between a first segment of the network fabric and a second segment of the network fabric. The techniques further include configuring the control plane to enforce the stateless rule.

公开(公告)号：US12244514B2

公开(公告)日：2025-03-04

申请号：US17858530

申请日：2022-07-06

Applicant: Cisco Technology, Inc.

Inventor： Feng Cao ,  Harikrishnan Pillai ,  Jonathan Rosen

IPC: H04L47/762 ,  G06F11/34 ,  H04L45/00 ,  H04L47/80

Abstract: Intelligent distribution of packet flows may be provided. Compute resource data may be received. Next, packets may be classified into flows that may be persistently mapped to compute resources for a lifetime of the flows. Based on the compute resource data, the flows may then be allocated to the compute resources.

公开(公告)号：US12244450B1

公开(公告)日：2025-03-04

申请号：US18461267

申请日：2023-09-05

Applicant: Cisco Technology, Inc.

Inventor： Swapna Anandan ,  Elango Ganesan ,  Flemming S Andreasen

IPC: H04L41/06 ,  H04L67/12

Abstract: Embodiments relate to a method for enhancing and prioritizing operation technology (OT) control systems in a safety instrumented system (SIS) environment by incorporating safety levels. The method includes receiving network packets associated with OT systems by network interface. From network packets, OT systems associated with safety integrity level (SIL) values are identified. In response to identifying OT control systems associated with SIL values, determining priority levels from SIL values of OT systems. The method includes identifying, among OT control systems, network packets associated with a critical OT system associated with a SIL value having a higher priority level. The critical OT system may be prioritized that comprises encoding the network packets of the critical OT system, with corresponding SIL value. The prioritized critical OT system may be prioritized based on SIL value and classified into a network group associated with a network tag to deliver traffic with higher priority.

公开(公告)号：US20250071088A1

公开(公告)日：2025-02-27

申请号：US18237574

申请日：2023-08-24

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Eric A. Voit ,  Eric Levy-Abegnoli

IPC: H04L61/5007 ,  H04L61/2503

Abstract: Techniques for using Home Addresses, Mobile Internet Protocol (MIP), and/or other techniques in conjunction with Domain Name System (DNS) to obfuscate server-side addresses in data communications. Rather than having DNS provide a client device with an IP address of an endpoint device, such as a server, the DNS instead returns a Home Address that is mapped to the client device and at least one server IP address of the endpoint device. In this way, IP addresses of servers are obfuscated by a network mapping of the Home Addresses and the server IP addresses. The client device may then communicate data packets to the server using the Home Addresses as the destination address, and a virtual network service that works in conjunction with DNS can encapsulate the data packet with the server IP addresses and forward the data packet onto the server.

公开(公告)号：US20250071061A1

公开(公告)日：2025-02-27

申请号：US18456266

申请日：2023-08-25

Applicant: Cisco Technology, Inc.

Inventor： Satish Kumar Mahadevan ,  Sheikh M Qumruzzaman ,  Ravi Kiran Chintallapudi ,  Prosenjit Sarkar ,  Sourav Sen ,  Balaji Sundararajan ,  Rahul P Hardikar

IPC: H04L45/76

Abstract: Systems and methods are provided for re-balancing and healing of an SD-WAN in an unbalanced state and/or experiencing one or more failure states. In response to a request to connect to a new controller resulting from OMP load shedding from a first controller, the system can identify other controllers capable of handling the load requirements of the edge router. The system can incorporate the controller group preference of the edge router and select a second controller based on the identified other controllers and within the preferred controller group. If not possible, the system can temporarily assign the edge router to non-preferred controller groups and move them back to controllers in the preferred controller group once it becomes viable. The system further enhances OMP graceful restart (GR) logic to incorporate the load shedding effect and avoid unnecessary route retention that GR entails.

公开(公告)号：US20250070715A1

公开(公告)日：2025-02-27

申请号：US18456373

申请日：2023-08-25

Applicant: Cisco Technology, Inc.

Inventor： Abhishek BHAT ,  Joseph V. PAMPANIN

IPC: H03B5/12 ,  H03L7/099

Abstract: A voltage-controlled oscillator (VCO) is disclosed that includes an inductor-capacitor (LC) tank coupled with a first voltage supply node, a pair of cross-coupled transistors that are coupled with the LC tank and coupled with each other at a tail node, and a high-frequency current return path to the first voltage supply node. The high-frequency return path includes a first decoupling capacitor coupled with the first voltage supply node and a second voltage supply node, and a first inductor coupled with the tail node and the second voltage supply node. The first inductor is formed as a first conductive trace and has a quality factor (Q) value of 25 or greater.

公开(公告)号：US12238208B2

公开(公告)日：2025-02-25

申请号：US18175807

申请日：2023-02-28

Applicant: Cisco Technology, Inc.

Inventor： Stephen Magno DiAdamo ,  Alireza Shabani ,  Bing Qi ,  Reem M. Mandil

IPC: H04L9/08

Abstract: A network element in a quantum network receives a hybrid frame including a classical header and a quantum payload. The network element processes the classical header for a length of time and generates a new classical header. The network element drops a portion of the quantum payload based on the length of time spent processing the classical header and updates the hybrid frame to include the new classical header and the quantum payload without the dropped portion.

公开(公告)号：US12238006B1

公开(公告)日：2025-02-25

申请号：US18456266

申请日：2023-08-25

Applicant: Cisco Technology, Inc.

Inventor： Satish Kumar Mahadevan ,  Sheikh M Qumruzzaman ,  Ravi Kiran Chintallapudi ,  Prosenjit Sarkar ,  Sourav Sen ,  Balaji Sundararajan ,  Rahul P Hardikar

IPC: G06F15/173 ,  H04L45/76

Abstract: Systems and methods are provided for re-balancing and healing of an SD-WAN in an unbalanced state and/or experiencing one or more failure states. In response to a request to connect to a new controller resulting from OMP load shedding from a first controller, the system can identify other controllers capable of handling the load requirements of the edge router. The system can incorporate the controller group preference of the edge router and select a second controller based on the identified other controllers and within the preferred controller group. If not possible, the system can temporarily assign the edge router to non-preferred controller groups and move them back to controllers in the preferred controller group once it becomes viable. The system further enhances OMP graceful restart (GR) logic to incorporate the load shedding effect and avoid unnecessary route retention that GR entails.

公开(公告)号：US12237643B2

公开(公告)日：2025-02-25

申请号：US17302964

申请日：2021-05-17

Applicant: Cisco Technology, Inc.

Inventor： Norbert Schlepple ,  Jock T. Bovington ,  Mary Nadeau ,  Mittu Pannala ,  Jarrett S. Neiman

IPC: H01S5/024 ,  H01S5/02 ,  H01S5/02326

Abstract: Heatsinking in laser devices may be improved via a device, including: a header disk having a first face with a circumference; a header post that is thermally conductive, and having: a second face connected to the first face coterminously with the circumference; a third face opposite to the second face; and a fourth face perpendicular to the second face and the third face; a lens holder, having a fifth face connected to the third face; and an optical subassembly connected to the fourth face and optically aligned with the lens holder. The device may also be understood to comprise: a header disk having a circumference; a header post that is thermally conductive, the header post having: an arc coterminous to a portion of the circumference; a mounting face, perpendicular to a plane in which the arc and the circumference are defined; and a bonding face perpendicular to the mounting face.

公开(公告)号：US20250063014A1

公开(公告)日：2025-02-20

申请号：US18936837

申请日：2024-11-04

Applicant: Cisco Technology, Inc.

Inventor： Kyle Andrew Donald Mestery ,  Vincent E. Parla

IPC: H04L61/2557 ,  H04L9/40 ,  H04L61/256 ,  H04L61/4511

Abstract: Techniques for binding communication flows to unique addresses and/or ports, and configuring networking devices internal to a network to apply policy without the need to further introspect a given stream. Further, by creating mappings of unique addresses and/or ports to flows, the network devices are able to enforce policy without needing to coordinate with an edge node of the network at which the communication session terminates. Further, the techniques may include providing an SDN controller with a mapping between a unique address/port and a network flow, determining flow-specific policy to enforce on the flow, and programming one or more network devices to enforce the flow-specific policy in the network using the unique address/port.