Subscriptions are items that create associations between telemetry roles, and define the data that is sent between them. Subscriptions allow applications to subscribe to updates (automaticĪnd continuous updates) from a YANG datastore, and this enables the publisher to push and in effect stream those updates. The data to be streamed is driven through subscription.
Then, either periodically, or as objects change, a subscribed set of YANG objects
Need for the periodic polling of network elements instead, a continuous request for information to be delivered to a subscriber Telemetry uses a subscription model to identify information sources and destinations. Model-driven telemetry provides a mechanism to stream data fromĪ model-driven telemetry-capable device to a destination. Points and transmitted to receiving equipment for monitoring. Telemetry is an automated communications process by which measurements and other data are collected at remote or inaccessible Information About Model-Driven Telemetry Model-Driven Telemetry Overview This capability is advertised only on devices that support IETF telemetry. The urn:ietf:params:netconf:capability:notification:1.1 capability must be listed in the hello message. The process pubd is the model-driven telemetry process, and if it is not running, model-driven telemetry will not work. Verify that the following processes are running, by using the show platform software yang-management process command :ĭevice# show platform software yang-management process NETCONF-YANG must be configured and running on the device.Knowledge of standards and principles defined by the IETF dynamic telemetry specification. Knowledge of XML, XML namespaces, and XML XPath. For more information, see theįor more information on NETCONF-YANG, see the Datamodels chapter. Sending/receiving YANG XML remote procedure calls (RPCs) over the established NETCONF session. Sending/receiving hello and capabilities messages. Knowledge of NETCONF-YANG and how to use it, including:
Feature Information for Model-Driven Telemetry.Additional References for Model-Driven Telemetry.Prerequisites for Model-Driven Telemetry.Structured data is published at a defined cadence, or on-change, based upon the subscription criteria and data type. Model-driven telemetry allows network devices to continuously stream real time configuration and operating state informationĪpplications can subscribe to specific data items they need, by using standard-based YANG data models over NETCONF-YANG.
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