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DevOps & Automation · Advanced

Model-Driven Telemetry (MDT)

Streaming YANG-modeled operational data from network devices to collectors, replacing periodic SNMP polling.

Definition

Devices push data periodically or on-change over gRPC, gNMI, or NETCONF, often encoded with Protobuf (GPB/kvGPB) or JSON. A common open-source stack is Telegraf (collector), InfluxDB (storage), and Grafana (visualization), known as TIG.

Example

An IOS XE switch streams CPU utilization every 10 seconds to Telegraf via gRPC dial-out.

Exam tip

MDT is push-based and near real-time; SNMP is pull-based polling.

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