Telemetry Components and Process
Telemetry consists of four key elements:
Data Collection - Telemetry data is collected from the database in branches of the object model specified using distinguished name (DN) paths. The data can be retrieved periodically (frequency- based). You can use the NX-API to collect frequency-based data.
Data Encoding - The telemetry encoder encapsulates the collected data into the desired format for transporting. NX-OS encodes telemetry data in the Google Protocol Buffers (GPB).
Data Transport - NX-OS transports telemetry data using the Google remote procedure call (gRPC) protocol for GPB encoding. The gRPC receiver supports message sizes greater than
4MB.
Telemetry Receiver - A telemetry receiver is a remote management system or application that stores the telemetry data.
Reference:
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus7000/sw/programmability/guide/ cisco_nexus7000_programmability_guide_8x/cisco_nexus7000_programmability_guide_8x_chap ter_01010.html