Cisco Technology, Inc.

Benoit Claise

Carlos M Pignataro

Joseph Michael Clarke

Eric G Vyncke

Emmanuel P Tychon

Paul J Aitken

Andrew G Johnson

Harjinder Singh

Mioljub Jovanovic

Nagendra Kumar Nainar

Stefano Benedetto Previdi

Paul Atkins

Ulrica De Fort-Menares

Jean-Philippe Vasseur

David Delano Ward

Clarence Filsfils

Randall R Stewart

Aamer Saeed Akhter

John Parello

Peter Lei

Ludwig Alexander Clemm

Kui Zhang

Tirthankar Ghose

Stanford Louis Yates

Charles B Schoening

Santiago Alvarez

Zhipu Jin

Erik De Kegel, Iii

Richard Wellum

Munish Nayyar

Feng Ye

Adithya Reddy Sesani

Gowri Dhandapani

Nagaraj Varadharajan

Dimitri Bouianovski

Eric Vyncke

A method is performed at one or more entities configured to configure and provide assurance for a service enabled on a network. The service is configured as a collection of subservices on network devices of the network. A definition of the service is decomposed into a subservice dependency graph that indicates the subservices and dependencies between the subservices that collectively implement the service. Based on the subservice dependency graph, the subservices are configured to record and report subservice metrics indicative of subservice health states of the subservices. The subservice metrics are obtained from the subservices, and the subservice health states of the subservices are determined based on the subservice metrics. A health state of the service is determined based on the subservice health states. One or more of the subservices are reconfigured based on the health state of the service.

Closed loop automation for intent-based networking

A network device is provisioned with a first data model of a first type and that models first properties for the network device, a second data model of a second type and that models second properties for the network device, and mappings that indicate mapped first properties among the first properties that are mapped to mapped second properties of the second properties. Upon receiving a request from a network for data for the first data model, the network device retrieves first data for the first properties of the first data model. The network device determines, based on the mappings, unmapped second properties of the second properties that are not mapped to any of the first properties. The network device retrieves, as dynamically augmented data, data for the unmapped second properties. The network device sends a request response including the first data and the dynamically augmented data.

Dynamic augmentation for functionally similar data models on network devices

A method comprises configuring a service as a collection of subservices on network devices of a network, and decomposing a definition of the service into a subservice dependency graph that indicates the subservices and dependencies between the subservices that implement the service. The method further comprises, based on the subservice dependency graph, configuring a subservice among the subservices to record and report a subservice metric as an indicator of subservice performance. The method further comprises determining a rate at which to obtain values of the subservice metric from the subservice, determining a confidence interval for the values of the subservice metric, and obtaining the values of the subservice metric from the subservice at the rate, to produce values for monitoring the subservice. The method also includes determining whether at least one of the values for monitoring the subservice is within the confidence interval.

Baselining service-tagged data from subservices of a service for service assurance

A method is performed to provide assurance for a service enabled on a network. A definition of the service is received. The definition includes a service type, a service instance, and configuration information used to enable the service. From the service type and the service instance, a service tag that is unique to the service is generated so as to distinguish the service from other services on the network. Based on the definition, the service is decomposed into a subservice dependency graph of subservices and dependencies between the subservices. Based on the subservice dependency graph, the subservices are configured to record and report subservice metrics indicative of health states of the subservices. The subservice metrics are obtained from the subservices. The service tag is applied to the subservice metrics to produce service-tagged subservice metrics. The service-tagged subservice metrics are analyzed to determine a health state of the service.

Service tagging optimization for intent-based networking

A method includes configuring services as respective collections of subservices on network devices of a network, and decomposing definitions of the services into subservice dependency graphs each indicating the subservices and dependencies between the subservices that collectively implement a respective one of the services. The method further includes traversing the subservice dependency graphs to identify, at one or more intersections of the subservice dependency graphs, one or more shared subservices among the subservices of the services, wherein the one or more shared subservices are shared by the services. The method also includes monitoring subservice health states of the one or more shared subservices, and determining health states of the services based on the subservice health states of the one or more shared subservices.

Intelligent selection of vantage points for monitoring subservices based on potential impact to services

In one embodiment, a method is provided service aware conditional path monitoring. The method includes determining, for a network that includes a plurality of nodes, which particular nodes of the plurality of nodes forward traffic associated with a service. The method involves identifying relevant forwarding instructions within the particular nodes that are used to forward traffic for the service. The method further includes configuring the particular nodes to perform monitoring of traffic with a higher priority given to the relevant forwarding instructions than other forwarding instructions on the particular nodes. Monitoring results are obtained from the monitoring of traffic on the particular nodes on the relevant forwarding instructions. The monitoring results are analyzed to determine assurance of the service in the network.

Service aware conditional path monitoring

Techniques are presented herein for determining equal cost multi-path (ECMP) performance health in a network. In accordance with an example embodiment, a method is provided that involves obtaining information indicating ECMP paths in a network, the network comprises of a plurality of nodes that includes at least one branch node. The method includes configuring the branch node to obtain ECMP performance metrics, and obtaining the ECMP performance metrics from the branch node. The method further includes analyzing the ECMP performance metrics to determine ECMP performance health of the branch node.

Service-based node-centric ECMP health

A method includes configuring a service on a network, and generating infrastructure definitions that define one or more network topologies configured on the network to implement the service. The method also includes decomposing a service definition of the service into a subservice dependency graph to indicate a collection of subservices and dependencies between the subservices that collectively implement the service. The method further includes, based on the subservice dependency graph and the one or more network topologies defined by the infrastructure definitions, determining infrastructure elements configured in the network to implement the service. The method also includes generating a heatmap that maps the service against the infrastructure elements and that indicates, for the infrastructure elements, respective measures of criticality in a range from a high criticality to a low criticality.

Service heatmap-based telemetry feedback loop

A method is provided in one example embodiment and includes computing energy usage associated with a domain that includes a plurality of endpoints; identifying particular endpoints of the plurality of endpoints that are capable of switching from a first power source to a battery power source; and communicating a broadcast message to the particular endpoints to switch to their corresponding battery power source.

System and method for notifying and for controlling power demand

A method is provided in one example embodiment and includes receiving a plurality of packets and generating a data record that is based on information associated with the packets. The data record includes a synchronized time window field that defines a time boundary at which data aggregation associated with the data record is stopped, where the synchronized time window field remains constant as the data aggregation associated with the data record occurs. In other embodiments, the method includes creating a new cache entry for new packets arriving at a network element, where the new cache entry is created in response to a value of the synchronized time window field changing. The synchronized time window field can include a window size attribute that defines how long the synchronized time window remains unchanged.

System and method for synchronized reporting in a network environment

In one embodiment, a method includes identifying whether there is a first device in a network that is expected to be associated with a discovery protocol but does not have the discovery protocol turned on. The method also includes providing a notification to a management arrangement when the first device is identified. The management arrangement manages the network, and the notification indicates that the first device is expected to be associated with the discovery protocol but does not have the discovery protocol turned on.

Method and apparatus for discovering devices in a network

In one embodiment, a method can include: (i) receiving flow records from a plurality of network devices on asymmetric paths; (ii) reconstructing a network transaction from the received flow records; and (iii) deriving response times using the reconstructed network transaction.

Network response time measurements in an asymmetric routing environment

Methods and apparatus for identifying a best path from a plurality of equal cost paths while accounting for service level agreement (SLA) metrics are disclosed. According to one aspect of the present invention, a method for routing a packet that has a payload using a node includes obtaining the packet, and adding an address of the node to the payload. Adding the address of the node to the payload creates an augmented packet. The method also includes identifying at least one element to which the augmented packet is to be routed, and providing the augmented packet to that element. In one embodiment, the method also includes storing ingress and egress timestamps associated with the node.

Growing community of inventors

Crisnee, Belgium

Benoit Claise