公开(公告)号：US20180205641A1

公开(公告)日：2018-07-19

申请号：US15409249

申请日：2017-01-18

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Carlos M. Pignataro ,  Clarence Filsfils ,  Nagendra Kumar Nainar

IPC: H04L12/723 ,  H04L12/721 ,  H04L12/803

CPC classification number: H04L45/507 ,  H04L45/38 ,  H04L47/125

Abstract: In one embodiment, a method includes receiving at an ingress node in a segment routing network, an entropy prefix segment identifier, generating a label stack comprising the entropy prefix segment identifier and an entropy label beneath the entropy prefix segment identifier, and transmitting a packet comprising the label stack using the entropy prefix segment identifier as a transport label and an entropy label identifier. An apparatus and logic are also disclosed herein.

公开(公告)号：US20180176134A1

公开(公告)日：2018-06-21

申请号：US15386306

申请日：2016-12-21

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/801 ,  H04L12/911 ,  H04L29/06 ,  H04L12/26 ,  H04L12/707 ,  H04L12/24

CPC classification number: H04L47/12 ,  H04L41/12 ,  H04L41/5019 ,  H04L43/045 ,  H04L43/10 ,  H04L43/14 ,  H04L45/24 ,  H04L47/829 ,  H04L67/10 ,  H04L67/12 ,  H04L69/22

Abstract: In one embodiment, a device in a network receives in-situ operations administration and management (iOAM) data regarding a plurality of traffic flows in the network. The iOAM data comprises entropy values for the plurality of traffic flows. The device receives network topology information indicative of network paths available in the network. The device generates a machine learning-based entropy topology model for the network based on the received iOAM data and the received network topology information. The entropy topology model maps path selection predictions for the network paths with entropy values. The device uses the entropy topology model to cause a particular traffic flow to use a particular network path.

公开(公告)号：US09922116B2

公开(公告)日：2018-03-20

申请号：US14529467

申请日：2014-10-31

Applicant: Cisco Technology, Inc.

Inventor： Mark Ammar Rayes ,  Hector Guillermo Trevino ,  Carlos M. Pignataro

IPC: G06F17/30

CPC classification number: G06F17/30663 ,  G06F17/30705 ,  G06F17/30864

Abstract: Techniques are presented herein to monitor a plurality of big data sources in order to dynamically identify keywords. The big data sources are analyzed to classify the keywords as related to either a technical problem or to a solution to the technical problem. In addition, data associated with the keywords is weighted based on one or more attributes of the data and stored in a database in a problem-solution format.

公开(公告)号：US20180026884A1

公开(公告)日：2018-01-25

申请号：US15216334

申请日：2016-07-21

Applicant: Cisco Technology, Inc.

Inventor： Nagendra Kumar Nainar ,  Carlos M. Pignataro ,  Deepak Kumar

IPC: H04L12/715

CPC classification number: H04L45/50 ,  H04L12/4633 ,  H04L41/00 ,  H04L41/04 ,  H04L43/0811 ,  H04L43/10 ,  H04L45/64 ,  H04L67/10

Abstract: Systems, methods, and computer-readable media are provided for facilitating the implementation of an operations, administration, and management (OAM) protocol in a network overlay environment. In particular, aspects of the technology facilitating the transport of OAM communications across overlay environments of different types. Aspects of the technology can include steps for receiving a packet comprising an OAM payload, and encapsulating the packet with an OAM transport header, wherein the transport header is configured to be read by transit nodes of different overlay types.

公开(公告)号：US20180013841A1

公开(公告)日：2018-01-11

申请号：US15203759

申请日：2016-07-06

Applicant: Cisco Technology, Inc.

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

IPC: H04L29/08 ,  H04L12/721

Abstract: Systems, methods, and computer-readable media for improving the reliability of service function (SF) application in a service function chain (SFC) are provided. In some aspects, the subject technology facilitates automatic service function type validation by a service function forwarder (SFF), for example, by using a probe configured to query a function type of a SF module associated with the validating SFF.

公开(公告)号：US20180013638A1

公开(公告)日：2018-01-11

申请号：US15711625

申请日：2017-09-21

Applicant: Cisco Technology, Inc.

Inventor： James Guichard ,  Carlos M. Pignataro ,  David Ward ,  Paul Quinn ,  Surendra Kumar

IPC: H04L12/24 ,  H04L12/26 ,  H04L12/703 ,  H04L29/08 ,  H04L12/723

CPC classification number: H04L41/5009 ,  H04L41/0654 ,  H04L41/0668 ,  H04L41/5038 ,  H04L41/5077 ,  H04L43/0823 ,  H04L43/50 ,  H04L45/28 ,  H04L45/302 ,  H04L45/50 ,  H04L67/10

Abstract: Presented herein are techniques performed in a network comprising a plurality of network nodes each configured to apply one or more service functions to traffic that passes the respective network nodes in a service path. At a network node, an indication is received of a failure or degradation of one or more service functions or applications applied to traffic at the network node. Data descriptive of the failure or degradation is generated. A previous service hop network node at which a service function or application was applied to traffic in the service path is determined. The data descriptive of the failure or degradation is communicated to the previous service hop network node.

公开(公告)号：US09860340B2

公开(公告)日：2018-01-02

申请号：US15606267

申请日：2017-05-26

Applicant: Cisco Technology, Inc.

Inventor： Naiming Shen ,  Keyur P. Patel ,  Carlos M. Pignataro ,  James N. Guichard

IPC: H04L12/28 ,  H04L29/08 ,  H04L12/24 ,  H04L12/721

CPC classification number: H04L67/327 ,  H04L41/0806 ,  H04L41/5054 ,  H04L41/5058 ,  H04L45/306 ,  H04L45/44

Abstract: A system comprising a plurality of service nodes, a controller and a network device in communication with the controller. Each of the plurality of service nodes is configured to support one or more service functions to establish a service function chain that includes a plurality of service functions to be performed by routing traffic among the plurality of service nodes. The controller is configured to generate provisioning information for the service function chain. The provisioning information includes at least one condition upon which a service function reclassification or branching operation is to be performed by at least one service node. The network device is in communication with the controller, and is configured to distribute the provisioning information for the service function chain to the plurality of service nodes using a distributed routing protocol.

公开(公告)号：US20170324651A1

公开(公告)日：2017-11-09

申请号：US15149695

申请日：2016-05-09

Applicant: Cisco Technology, Inc.

Inventor： Reinaldo Penno ,  Carlos M. Pignataro ,  Nagendra Kumar Nainar

IPC: H04L12/721 ,  H04L29/08 ,  H04L12/26 ,  H04L12/733 ,  H04W72/12 ,  H04L29/06

CPC classification number: H04L45/26 ,  H04L41/5009 ,  H04L41/5032 ,  H04L43/06 ,  H04L43/10 ,  H04L67/327 ,  H04L69/22

Abstract: A packet is received at a network device hosting a service function that is part of a service chain. The packet is sent to the network device from an originating network device. The content of the packet is analyzed to determine that the packet comprises a request for statistical values to be aggregated by the network device. The statistical values are aggregated at the network device. A report comprising the statistical values aggregated at the network device is generated. The report is sent to the originating network device.

公开(公告)号：US09806962B2

公开(公告)日：2017-10-31

申请号：US15223235

申请日：2016-07-29

Applicant: Cisco Technology, Inc.

Inventor： James Guichard ,  Carlos M. Pignataro ,  David Ward ,  Paul Quinn ,  Surendra Kumar

IPC: H04L1/00 ,  H04L12/24 ,  H04L12/26 ,  H04L12/703 ,  H04L12/725 ,  H04L12/723 ,  H04L29/08

CPC classification number: H04L41/5009 ,  H04L41/0654 ,  H04L41/0668 ,  H04L41/5038 ,  H04L41/5077 ,  H04L43/0823 ,  H04L43/50 ,  H04L45/28 ,  H04L45/302 ,  H04L45/50 ,  H04L67/10

Abstract: Presented herein are techniques performed in a network comprising a plurality of network nodes each configured to apply one or more service functions to traffic that passes the respective network nodes in a service path. At a network node, an indication is received of a failure or degradation of one or more service functions or applications applied to traffic at the network node. Data descriptive of the failure or degradation is generated. A previous service hop network node at which a service function or application was applied to traffic in the service path is determined. The data descriptive of the failure or degradation is communicated to the previous service hop network node.

公开(公告)号：US20170289032A1

公开(公告)日：2017-10-05

申请号：US15084332

申请日：2016-03-29

Applicant: CISCO TECHNOLOGY, INC.

Inventor： James N. Guichard ,  Carlos M. Pignataro ,  Yixing Ruan ,  Javed Asghar

IPC: H04L12/741 ,  H04L12/723 ,  H04L12/46

CPC classification number: H04L12/4641 ,  H04L45/306

Abstract: Embodiments of the present disclosure are directed to augmenting a Network Service Header (NSH) metadata of a data packet with a virtual routing and forwarding identifier (VRF-ID) and forgoing augmenting a virtual private network (VPN) label into a multiprotocol label switched (MPLS) metadata of the data packet. A provider edge router can use the VRF-ID to identify a next hop for the data packet as a service to be applied prior to forwarding the data packet to a VPN site.