Sensor Path
The sensor path describes a YANG path or a subset of data definitions in a YANG model with a container. In a YANG model, the sensor path can be specified to end at any level in the container hierarchy.
An MDT-capable device, such as a router, associates the sensor path to the nearest container path in the model. The router encodes and streams the container path within a single telemetry message. A receiver receives data about all the containers and leaf nodes at and below this container path.
Subscription
A subscription binds one or more sensor paths and destinations. An MDT-capable device streams data for each sensor path at the configured frequency (cadence-based streaming) or when the sensor-path content changes (event-based streaming) to the destination.
https://www.cisco.com/c/en/us/td/docs/optical/ncs1001/telemetry/guide/b-telemetry-cg-ncs1000/core-components-model-driven-telemetry-streaming.html#id_36300
The sensor path is where you configure what you want to send.
This blog isn't from Cisco, but it was written by a former Cisco employee while he worked there. He describes the Sensor Path with the exact wording from this question.
https://xrdocs.io/telemetry/tutorials/2017-10-25-ncs1002-telemetry-deep-dive/
Great info!
“Sensor path”. Describes the data you want your Router to stream to a collector.
“Transport protocol”. Describes the protocol you want to use to deliver the info.
“Encoder”. Describes the format of the data on the wire (for example, GPB).
“Initialization of streaming session”. Describes who initiates the streaming of data (dial-in or dial-out).
“Subscription”. Binds everything together for the router to start streaming data on the configured intervals.
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