公开(公告)号：US10558784B2

公开(公告)日：2020-02-11

申请号：US14845771

申请日：2015-09-04

Applicant: Cisco Technology, Inc.

Inventor： Rajesh Vargheese ,  Carlos M. Pignataro ,  James D. Stanley, III ,  Prashant R. Prabhudesai ,  Matthew R. Engle ,  Gonzalo A. Salgueiro

IPC: G06F19/00 ,  G16H10/60

Abstract: A plurality of time and motion data sets are correlated at a network connected device. The time and motion data sets track an item of interest, and at least one of the time and motion data sets comprises energy consumption data or wireless local area network location data. Physical presence for the item of interest is determined based upon the correlating of the multiple time and motion data sets. Based upon the physical presence of the item of interest, an unacceptable condition for the item of interest may be determined. The unacceptable condition for the item of interest is remedied.

公开(公告)号：US10541893B2

公开(公告)日：2020-01-21

申请号：US15793557

申请日：2017-10-25

Applicant: Cisco Technology, Inc.

Inventor： Nagendra Kumar Nainar ,  Rajiv Asati ,  Carlos M. Pignataro

IPC: G06F15/173 ,  H04L12/26

Abstract: Systems, methods, and computer-readable media are disclosed for use of an overlay network termination endpoint as a proxy to collect telemetry data for micro-services or specific applications provided by containers in overlay data centers. In one aspect of the present disclosure, a method includes receiving, at a controller, a probe for flow statistics associated with a service path, the probe including corresponding flow identification information, extracting the corresponding flow identification information from the probe, obtaining the flow statistics from an agent based on the flow identification information, the agent being configured to manage a plurality of containers, generating a response packet including the flow statistics obtained from the agent and sending the response packet to an initiator from which the query is received.

公开(公告)号：US20190356570A1

公开(公告)日：2019-11-21

申请号：US16531201

申请日：2019-08-05

Applicant: Cisco Technology, Inc.

Inventor： Nagendra Kumar Nainar ,  Carlos M. Pignataro

IPC: H04L12/26 ,  H04L12/741 ,  H04L12/721

Abstract: Dataplane-based Seamless Bidirectional Forwarding Detection (S-BFD) monitoring for network entities is provided. In one embodiment, a method of S-BFD monitoring includes assigning, by a network element, a unique segment identifier (ID) to each entity of a plurality of entities that are monitored by the network element. The method includes receiving an S-BFD control packet at the network element, including a first segment ID associated with a particular entity. The method also includes performing a lookup operation for the first segment ID in stored data of the network element. Based on the lookup operation, when a first action is designated in the stored data for the first segment ID, the method includes returning the S-BFD control packet to its source, and, when a second action is designated in the stored data for the first segment ID, the method includes forwarding the S-BFD control packet to an S-BFD reflector session.

公开(公告)号：US20190327111A1

公开(公告)日：2019-10-24

申请号：US16502572

申请日：2019-07-03

Applicant: Cisco Technology, Inc.

Inventor： Gonzalo Salgueiro ,  Prashanth Patil ,  K. Tirumaleswar Reddy ,  Carlos M. Pignataro

IPC: H04L12/46 ,  H04L12/741 ,  H04L29/08 ,  H04L12/751

Abstract: A network node in a service function chaining system receives multiple media streams of a media session between endpoints. Each media stream is encapsulated with a service header indicating a service function path and a session identifier. The network node determines that multiple service functions connected to the network node perform a particular service function in the service function path. The network node provides all of the media streams of the media session to a single service function instance to ensure that the media session is processed by the single service function.

公开(公告)号：US10417599B2

公开(公告)日：2019-09-17

申请号：US14845777

申请日：2015-09-04

Applicant: Cisco Technology, Inc.

Inventor： Carlos M. Pignataro ,  James D. Stanley, III ,  Rajesh Vargheese ,  Ammar Rayes ,  David Prantl ,  Hazim Hashim Dahir ,  Gonzalo A. Salgueiro

IPC: G06Q10/00 ,  G06Q10/06

Abstract: A plurality of data sets are compiled in a memory. A first data set comprises a location mapping of an item of interest within a predetermined environment, and a second set comprises energy usage data within the predetermined environment. The first data set is correlated, via a processor, with the second data set to locate a subset of energy usage data in the second data set associated with the item of interest. A third data set is generated by combining the first data set with the subset of energy usage data in the second data set to increase an accuracy of the location mapping of the item of interest based upon the subset of energy usage data. The third data set is applied to a computing resource.

公开(公告)号：US20190260657A1

公开(公告)日：2019-08-22

申请号：US16129967

申请日：2018-09-13

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Rakesh Gandhi ,  Zafar Ali ,  Nagendra Kumar Nainar ,  Carlos M. Pignataro

IPC: H04L12/26 ,  H04L12/931

Abstract: Techniques for in-band loss performance measurement are described. In one embodiment, a method includes assigning one of a first indicator or a second indicator to a first plurality of packets and transmitting the first plurality of packets over a first measurement interval. The method also includes receiving one or more packets and determining whether the received one or more packets are assigned the first indicator or the second indicator. The method further includes determining a loss measurement value for the first plurality of packets based on a difference between a number of packets measured by a first counter of a first network element and a number of packets measured by one of a first counter or a second counter of a second network element.

公开(公告)号：US20190222500A1

公开(公告)日：2019-07-18

申请号：US15869322

申请日：2018-01-12

Applicant: Cisco Technology, Inc.

Inventor： Nagendra Kumar Nainar ,  Carlos M. Pignataro

IPC: H04L12/26 ,  H04L12/721 ,  H04L12/741

CPC classification number: H04L43/10 ,  H04L45/72 ,  H04L45/745

Abstract: Dataplane-based Seamless Bidirectional Forwarding Detection (S-BFD) monitoring for network entities is provided. In one embodiment, a method of S-BFD monitoring includes assigning, by a network element, a unique segment identifier (ID) to each entity of a plurality of entities that are monitored by the network element. The method includes receiving an S-BFD control packet at the network element, including a first segment ID associated with a particular entity. The method also includes performing a lookup operation for the first segment ID in stored data of the network element. Based on the lookup operation, when a first action is designated in the stored data for the first segment ID, the method includes returning the S-BFD control packet to its source, and, when a second action is designated in the stored data for the first segment ID, the method includes forwarding the S-BFD control packet to an S-BFD reflector session.

公开(公告)号：US10313153B2

公开(公告)日：2019-06-04

申请号：US15443593

申请日：2017-02-27

Applicant: Cisco Technology, Inc.

Inventor： Nagendra Kumar Nainar ,  Carlos M. Pignataro ,  Alejandro A. Eguiarte Salazar ,  Rajiv Asati

IPC: H04L12/46 ,  H04L29/12

Abstract: In one embodiment, a device in a network monitors Ethernet virtual private network (EVPN) traffic in the network for a plurality of media access control (MAC) addresses. The device generates a machine learning-based traffic model for the MAC addresses based on the monitored EVPN traffic. The device determines a timeout for a particular one of the MAC addresses based on traffic predicted by the machine learning-based traffic model for the particular MAC address. The device causes the particular MAC address to be timed out from one or more forwarding tables in the network based on the determined timeout.

公开(公告)号：US20190158393A1

公开(公告)日：2019-05-23

申请号：US16259435

申请日：2019-01-28

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Nagendra Kumar Nainar ,  Carlos M. Pignataro ,  Faisal Iqbal

IPC: H04L12/723 ,  H04L12/911 ,  H04L12/733 ,  H04L12/721

Abstract: In one embodiment, a method includes generating a trace request at an initiator node configured for segment routing, the trace request comprising an FEC (Forwarding Equivalence Class) query corresponding to a label in an FEC stack with an unknown FEC, transmitting the trace request on a path with the unknown FEC, and receiving a response to the trace request, the response comprising FEC information including an identifier associated with a label and a forwarding path and representing a class or category of packets. An apparatus is also disclosed herein.

公开(公告)号：US20190104058A1

公开(公告)日：2019-04-04

申请号：US15841276

申请日：2017-12-13

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Zafar Ali ,  Syed Kamran Raza ,  Ahmed Refaat Bashandy ,  Nagendra Kumar Nainar ,  Carlos M. Pignataro ,  Jaganbabu Rajamanickam ,  Rakesh Gandhi ,  Bhupendra Yadav ,  Faisal Iqbal

IPC: H04L12/721 ,  H04L12/751 ,  H04L12/26

Abstract: In one embodiment, segment routing (SR) network processing of packets is performed which includes operations signaling and processing of packets in manners providing processing and/or memory efficiencies. One embodiment includes acquiring a segment routing particular packet by a particular router in a network. Responsive to the particular router data plane ascertained during fast path processing by a fast path processing unit that the segment routing particular packet is to be Operations, Administration, and Maintenance (OAM) processed by a different processing unit in the particular router, communicating a time stamp of a current time and the segment routing particular packet including a segment routing header that includes OAM signaling from said fast path processing to the different processing unit, with fast path processing being hardware-based packet processing by the fast path processing unit. The segment routing particular packet is OAM processing by the different processing unit.