The Juniper Apstra device agent is a software component installed on managed network devices. Its primary responsibilities are to act as the intermediary between the Apstra controller and the device's operating system. The telemetry agent component collects real-time state, statistics, and logs from the device and streams this data back to the controller for analysis and validation. The deployment agent component is responsible for rendering the intended network configuration based on the blueprint and applying it to the device, ensuring the device's configuration matches the golden configuration.

A. Routing agent: The device's native network operating system (e.g., Junos OS) handles all routing functions. The Apstra agent configures routing protocols but does not perform routing itself.

B. Authentication agent: Device authentication (e.g., SSH, TACACS+) is managed by the device's OS. The Apstra agent authenticates to the device, but it is not an authentication service.

1. Juniper Apstra Documentation, "Device Agents". This document describes the agent's function: "The agent is responsible for all interaction between the device and Apstra, including configuration deployment and telemetry collection."

2. Juniper Apstra User Guide, "Agents". This section explains that agents "execute the generated configuration" (deployment) and "collect telemetry" from the devices they manage.