Model-Driven Telemetry Overview:
Traditional SNMP polling helped build the network monitoring tools. However, SNMP is interrupt driven and has proven to be inefficient and insecure. Model-Driven Telemetry (MDT) allows administrators to tell the device exactly what to collect and how frequently. The device publishes those stats periodically. Since it’s pre-scheduled and often hardware assisted, the MDT is much more forgiving to the device.
MDT is granular and uses efficient Google Protocol buffers that minimize the overall bandwidth needs. Many new network devices from vendors such as Arista, Cisco and Juniper already support MDT.