公开(公告)号：US11902166B2

公开(公告)日：2024-02-13

申请号：US16984924

申请日：2020-08-04

Applicant: Cisco Technology, Inc.

Inventor： Raja Janardanan ,  Rajeev Kumar ,  Sanjay Kumar Hooda ,  Prakash C. Jain

IPC: H04L47/20 ,  H04L12/46 ,  H04L45/745 ,  H04L45/02

CPC classification number: H04L47/20 ,  H04L12/4641 ,  H04L45/02 ,  H04L45/745

Abstract: Routing of a traffic in a fabric network may be provided. A first traffic may be received at a first node. It may be determined that the first traffic is coming from a provider virtual network. In response to determining that the first traffic is coming from the provider virtual network, it may be determined that a first subnet associated with the first traffic is associated with a subscriber virtual network. In response to determining that the first subnet associated with the first traffic is associated with the subscriber virtual network, a first virtual network associated with the first traffic may be changed to the subscriber virtual network. A lookup for the first traffic may be changed to a first virtual routing and forwarding of the subscriber virtual network.

公开(公告)号：US12021748B2

公开(公告)日：2024-06-25

申请号：US17390677

申请日：2021-07-30

Applicant: Cisco Technology, Inc.

Inventor： Sanjay Kumar Hooda ,  Anoop Vetteth ,  Himanshu Mehra ,  Rajeev Kumar

IPC: H04L12/721 ,  H04L12/26 ,  H04L43/0829 ,  H04L43/0852 ,  H04L43/087 ,  H04L45/00

CPC classification number: H04L45/70 ,  H04L43/0829 ,  H04L43/0858 ,  H04L43/087

Abstract: Systems, methods, and computer-readable media are provided for performing secure frame encryption as a service. For instance, a network edge device can determine at least a first path and a second path for routing a data packet. The network edge device can obtain a first plurality of values for at least one network metric, wherein the first plurality of values corresponds to the first path and at least a first backup path associated with the first path. The network edge device can obtain a second plurality of values for the at least one network metric, wherein the second plurality of values corresponds to the second path and at least a second backup path associated with the second path. The network edge device can select one of the first path or the second path for routing the data packet based on a comparison of the first plurality of values and the second plurality of values.

公开(公告)号：US11863521B2

公开(公告)日：2024-01-02

申请号：US17486501

申请日：2021-09-27

Applicant: Cisco Technology, Inc.

Inventor： Rajeev Kumar ,  Sanjay Kumar Hooda ,  Ramesh Chandra Yeevani-Srinivas

IPC: H04L61/5014

CPC classification number: H04L61/5014

Abstract: Automated techniques for converting network devices from a Layer 2 (L2) network into a Layer 3 (L3) network in a hierarchical manner are described herein. The network devices may be configured to boot such that their ports are in an initialization mode in which the ports are unable to transmit locally generated DHCP packets. When a network device detects that a neighbor (or “peer”) device has acquired an IP address or has been configured by a network controller, then the port on which the neighbor device is detected can then be transitioned from the initialization mode into a forwarding mode. In the forwarding mode, the port can be used to transmit packets to obtain an IP address. Thus, the network devices are converted from an L2 device to an L3 device in a hierarchical order such that upstream devices are discovered and converted into L3 devices before downstream devices.

公开(公告)号：US20230327972A1

公开(公告)日：2023-10-12

申请号：US18334947

申请日：2023-06-14

Applicant: Cisco Technology, Inc.

Inventor： Rajagopal Venkatraman ,  Rajeev Kumar ,  Roberto Mitsuo Kobo ,  Vikash Agarwal

IPC: H04L43/12 ,  H04L45/02 ,  H04L45/74

CPC classification number: H04L43/12 ,  H04L45/02 ,  H04L45/74

Abstract: In one embodiment, network node-to-node connectivity verification is performed in a network including data path processing of packets within a packet switching device. In one embodiment, an echo request connectivity test packet, emulating an echo request connectivity test packet received from a first connected network node, is inserted by the packet switching device prior in its data processing path prior to ingress processing performed for packets received from the first connected network node. A correspondingly received echo reply connectivity test packet is intercepted by the packet switching device during data path egress processing performed for packets to be forwarded to the first connected network node.

公开(公告)号：US20230291680A1

公开(公告)日：2023-09-14

申请号：US18317576

申请日：2023-05-15

Applicant: Cisco Technology, Inc.

Inventor： Rajeev Kumar ,  Rajagopal Venkatraman

IPC: H04L45/16 ,  H04L12/18 ,  H04L45/00 ,  H04L43/12

CPC classification number: H04L45/16 ,  H04L12/1886 ,  H04L43/12 ,  H04L45/20 ,  H04L45/66

Abstract: A method may include bridging in, via a fabric, a multicast data packet from a source device to a first edge device of a plurality of edge devices and flooding the multicast data packet to the plurality of edge devices within a mutual subnetwork of the fabric. The method further includes bridging out the multicast data packet from a second edge device of the plurality of edge devices to a receiving device. The source device and the receiving device are located within the mutual subnetwork.

公开(公告)号：US11729280B2

公开(公告)日：2023-08-15

申请号：US18045202

申请日：2022-10-10

Applicant: Cisco Technology, Inc.

Inventor： Prakash C. Jain ,  Sanjay Kumar Hooda ,  Rajeev Kumar ,  Ramesh Yeevani-Srinivas

IPC: G06F15/173 ,  H04L67/51 ,  H04L65/1073

CPC classification number: H04L67/51 ,  H04L65/1073

Abstract: Services with policy control may be provided. A computing device may receive registration information associated with a border device. The registration information may comprise information identifying a service provided by a server associated with the border device, information identifying the border device, and policies associated with the service. Then an address for the server may be determined. Next a request may be received comprising the information identifying the service provided by the server. In response to receiving the request comprising the information identifying the service provided by the server, the address for the server, the information identifying the border device, and the policies associated with the service may be provided.

公开(公告)号：US11652734B2

公开(公告)日：2023-05-16

申请号：US17368503

申请日：2021-07-06

Applicant: Cisco Technology, Inc.

Inventor： Rajeev Kumar ,  Rajagopal Venkatraman

IPC: H04L45/16 ,  H04L45/00 ,  H04L43/12 ,  H04L12/18

CPC classification number: H04L45/16 ,  H04L12/1886 ,  H04L43/12 ,  H04L45/20 ,  H04L45/66

Abstract: A method may include bridging in, via a fabric, a multicast data packet from a source device to a first edge device of a plurality of edge devices and flooding the multicast data packet to the plurality of edge devices within a mutual subnetwork of the fabric. The method further includes bridging out the multicast data packet from a second edge device of the plurality of edge devices to a receiving device. The source device and the receiving device are located within the mutual subnetwork.

公开(公告)号：US20230114157A1

公开(公告)日：2023-04-13

申请号：US18045202

申请日：2022-10-10

Applicant: Cisco Technology, Inc.

Inventor： Prakash C. Jain ,  Sanjay Kumar Hooda ,  Rajeev Kumar ,  Ramesh Yeevani-Srinivas

IPC: H04L67/51 ,  H04L65/1073

Abstract: Services with policy control may be provided. A computing device may receive registration information associated with a border device. The registration information may comprise information identifying a service provided by a server associated with the border device, information identifying the border device, and policies associated with the service. Then an address for the server may be determined. Next a request may be received comprising the information identifying the service provided by the server. In response to receiving the request comprising the information identifying the service provided by the server, the address for the server, the information identifying the border device, and the policies associated with the service may be provided.

公开(公告)号：US20230100682A1

公开(公告)日：2023-03-30

申请号：US17486501

申请日：2021-09-27

Applicant: Cisco Technology, Inc.

Inventor： Rajeev Kumar ,  Sanjay Kumar Hooda ,  Ramesh Chandra Yeevani-Srinivas

IPC: H04L29/12

Abstract: Automated techniques for converting network devices from a Layer 2 (L2) network into a Layer 3 (L3) network in a hierarchical manner are described herein. The network devices may be configured to boot such that their ports are in an initialization mode in which the ports are unable to transmit locally generated DHCP packets. When a network device detects that a neighbor (or “peer”) device has acquired an IP address or has been configured by a network controller, then the port on which the neighbor device is detected can then be transitioned from the initialization mode into a forwarding mode. In the forwarding mode, the port can be used to transmit packets to obtain an IP address. Thus, the network devices are converted from an L2 device to an L3 device in a hierarchical order such that upstream devices are discovered and converted into L3 devices before downstream devices.

公开(公告)号：US11502959B2

公开(公告)日：2022-11-15

申请号：US16950315

申请日：2020-11-17

Applicant: Cisco Technology, Inc.

Inventor： Prakash C. Jain ,  Sanjay Kumar Hooda ,  Karthik Kumar Thatikonda ,  Denis Neogi ,  Rajeev Kumar

IPC: H04L47/20 ,  H04L61/58 ,  H04L67/63 ,  H04L43/026 ,  H04L45/74 ,  H04L45/745 ,  H04L47/32 ,  H04L61/103

Abstract: A traffic flow based map cache refresh may be provided. A computing device may receive a dropped packet message when a packet associated with a flow having a destination and a source was dropped before it reached the destination. Next, in response to receiving the dropped packet message, a map request message may be sent to a Map Server (MS). In response to sending the map request message, a map response message may be received indicating an updated destination for the flow. A map cache may then be refreshed for the source of the flow based on the updated destination from the received map response message.