公开(公告)号：US12284108B2

公开(公告)日：2025-04-22

申请号：US18343931

申请日：2023-06-29

Applicant: Cisco Technology, Inc.

Inventor： Prakash Jain ,  Sanjay K. Hooda ,  Victor Moreno

IPC: H04L45/02 ,  H04L9/40 ,  H04L12/66 ,  H04L45/00

Abstract: Techniques for network routing border convergence are described. Backup paths for external connections for a network are established and provide for a temporary path for network traffic during network routing convergence, preventing traffic loss at network border nodes.

公开(公告)号：US12113698B2

公开(公告)日：2024-10-08

申请号：US17446918

申请日：2021-09-03

Applicant: Cisco Technology, Inc.

Inventor： Rajeev Kumar ,  Sanjay K. Hooda ,  Balaji Pitta Venkatachalapathy ,  Prakash C. Jain ,  Rajagopal Venkatraman

IPC: H04L45/64 ,  H04L45/02 ,  H04L45/745

CPC classification number: H04L45/02 ,  H04L45/64 ,  H04L45/745

Abstract: Techniques and apparatus for allowing a network fabric to accept network devices associated with other fabric networks are described. An example technique involves establishing a communication session between a first network node and a first control plane of the network fabric, wherein the first network node supports a second control plane different from the first control plane; First routing information from the first network node is imported into a first routing table of the first control plane. Second routing information from a second network node is imported into a second routing table of the first network node.

公开(公告)号：US11729089B2

公开(公告)日：2023-08-15

申请号：US17304672

申请日：2021-06-24

Applicant: Cisco Technology, Inc.

Inventor： Prakash Jain ,  Sanjay K. Hooda ,  Victor Moreno

IPC: H04L45/02 ,  H04L12/66 ,  H04L45/00 ,  H04L9/40

CPC classification number: H04L45/02 ,  H04L12/66 ,  H04L45/22 ,  H04L63/0227

Abstract: Techniques for network routing border convergence are described. Backup paths for external connections for a network are established and provide for a temporary path for network traffic during network routing convergence, preventing traffic loss at network border nodes.

公开(公告)号：US20230171662A1

公开(公告)日：2023-06-01

申请号：US17536874

申请日：2021-11-29

Applicant: Cisco Technology, Inc.

Inventor： Victor M. Moreno ,  Sanjay K. Hooda ,  Errol Fenton Roberts

IPC: H04W36/18 ,  H04W36/00 ,  H04W36/32

CPC classification number: H04W36/18 ,  H04W36/0061 ,  H04W36/0058 ,  H04W36/00835 ,  H04W36/32

Abstract: A wireless telemetry process (WTP) may obtain telemetry data which includes signal strength information associated with a plurality of fabric wireless access points (APs) of a network fabric. The WTP may identify that a signal strength between a current AP and a wireless endpoint is below a threshold. In response, the WTP may select addresses of a set of handoff candidate APs for the wireless endpoint based on the signal strength information. The WTP may communicate, to a map server, a message to register, as entries in a replication list, a plurality of routing locators associated with the addresses of the set of handoff candidate APs for association with an address of the wireless endpoint. The map server may notify a router of the replication list, for replicating packets intended for the wireless endpoint to a plurality of routers that are connected to the set of handoff candidate APs.

公开(公告)号：US11265239B1

公开(公告)日：2022-03-01

申请号：US16566769

申请日：2019-09-10

Applicant: Cisco Technology, Inc.

Inventor： Shashank Vinchurkar ,  Sanjay K. Hooda ,  Chiragkumar P. Desai

IPC: H04L12/707 ,  H04L12/751 ,  H04L45/00 ,  H04L45/02

Abstract: Techniques for extended network configuration conversion and reconfiguration are described. A network controller proceeds through a set of extended network nodes in an extended network and reconfigures ports in at the various nodes from a first configuration to a second configuration while preventing network traffic looping and maintaining data and management traffic connection to the nodes during the reconfiguration.

公开(公告)号：US20190312809A1

公开(公告)日：2019-10-10

申请号：US15949398

申请日：2018-04-10

Applicant: Cisco Technology, Inc.

Inventor： Sanjay K. Hooda ,  Victor M. Moreno ,  Satish Kumar Kondalam

IPC: H04L12/741 ,  H04L12/933 ,  H04L12/715

Abstract: In one embodiment, a method generally includes a first edge (E) node in a network receiving an encapsulated data packet, wherein the encapsulated data packet comprises an outer header and a data packet, wherein the outer header comprises a first router locator (RLOC) corresponding to the first E node, wherein the data packet comprises an internet protocol (IP) header, and wherein the IP header comprises a destination endpoint identification (EID) corresponding to a host H. The first E node determines whether the host H is attached to the first E node. And in response to the first E node determining the host is attached to the first E node, the first E node forwards the data packet to the host H. The first E node receives a message from another node after the host H detaches from the first E node and reattaches to another E node, wherein the message comprises the destination EID.

公开(公告)号：US20250023807A1

公开(公告)日：2025-01-16

申请号：US18349799

申请日：2023-07-10

Applicant: Cisco Technology, Inc.

Inventor： Prakash C. Jain ,  Sanjay K. Hooda ,  Kabiraj Sethi ,  Vinay Saini

IPC: H04L43/0876

Abstract: Described herein are systems and methods for optimizing energy efficiency in a network utilizing a control plane or other network administration device or software suite. The control plane continuously monitors end-to-end network paths and collects real-time data about network topology, traffic patterns, and connected devices. By analyzing the collected network data, the control plane identifies power needs for network nodes and generates energy saving recommendations or instructions tailored to each node's specific capabilities. Network nodes can subscribe to the energy efficiency service provided by the control plane, receive network usage data, and execute energy saving operations based on the recommendations. The control plane dynamically updates the energy saving recommendations in response to changes in network conditions, enabling network nodes to optimize their energy efficiency without compromising network performance and availability. These updates can be based on current network conditions but can be generated from historical data and/or machine learning processes.

公开(公告)号：US12003348B2

公开(公告)日：2024-06-04

申请号：US17649955

申请日：2022-02-04

Applicant: Cisco Technology, Inc.

Inventor： Anand Oswal ,  Muninder S. Sambi ,  Sanjay K. Hooda ,  Gangadharan Byju Pularikkal ,  Kedar Karmarkar

IPC: H04L12/46 ,  H04L12/18 ,  H04L61/5014 ,  H04L61/58 ,  H04L101/668

CPC classification number: H04L12/4679 ,  H04L12/1886 ,  H04L12/4633 ,  H04L61/5014 ,  H04L61/58 ,  H04L2101/668 ,  H04L2212/00

Abstract: Secure network segmentation using logical subnet segments is described. A single network segment or subnet provided by a third party is mapped into multiple layer-3 virtual or logical segments without requiring separate subnets. This mapping is accomplished by using virtual routing functions (VRFs) per logical subnet segment while retaining a single subnet across the segments. The logical subnet segments interact with the single network segment provided by the third party (ISP). The layer-3 VRF instances are created without the need for separate IP subnet pools per layer-3 segment. Each VRF instance for the various logical subnet segments is mapped to an identifier and tag.

公开(公告)号：US11916778B2

公开(公告)日：2024-02-27

申请号：US17650151

申请日：2022-02-07

Applicant: Cisco Technology, Inc.

Inventor： Shashank Vinchurkar ,  Sanjay K. Hooda ,  Chiragkumar P. Desai

IPC: H04L45/00 ,  H04L45/02

CPC classification number: H04L45/22 ,  H04L45/02

Abstract: Techniques for extended network configuration conversion and reconfiguration are described. A network controller proceeds through a set of extended network nodes in an extended network and reconfigures ports in at the various nodes from a first configuration to a second configuration while preventing network traffic looping and maintaining data and management traffic connection to the nodes during the reconfiguration.

公开(公告)号：US11277282B2

公开(公告)日：2022-03-15

申请号：US16746903

申请日：2020-01-19

Applicant: Cisco Technology, Inc.

Inventor： Anand Oswal ,  Muninder S. Sambi ,  Sanjay K. Hooda ,  Gangadharan Byju Pularikkal ,  Kedar Karmarkar

IPC: H04L12/46 ,  H04L12/18 ,  H04L61/5014 ,  H04L61/58 ,  H04L101/668

Abstract: Secure network segmentation using logical subnet segments is described. A single network segment or subnet provided by a third party is mapped into multiple layer-3 virtual or logical segments without requiring separate subnets. This mapping is accomplished by using virtual routing functions (VRFs) per logical subnet segment while retaining a single subnet across the segments. The logical subnet segments interact with the single network segment provided by the third party (ISP). The layer-3 VRF instances are created without the need for separate IP subnet pools per layer-3 segment. Each VRF instance for the various logical subnet segments is mapped to a Virtual Network Identifier (VNI) and Scalable Group Tag (SGT).