The Junos Telemetry Interface (JTI) is a modern framework for streaming telemetry data from a Junos device to an external collector. It uses a push model to provide high-frequency, granular data. JTI supports two primary transport protocols for exporting this data. The first is UDP, which provides a simple, connectionless method for streaming. The second, and more commonly used, is gRPC (Google Remote Procedure Call), a high-performance, open-source RPC framework that runs over TCP and provides a reliable, session-based transport for telemetry data.

A. REST (Representational State Transfer) is a pull-based architectural style for APIs, distinct from the push-based streaming model of JTI.

C. SNMP (Simple Network Management Protocol) is a legacy, pull-based protocol. JTI was developed as a modern, more scalable alternative to SNMP.

1. Juniper Networks TechLibrary. (2024). Junos Telemetry Interface User Guide. "Understanding the Junos Telemetry Interface". The overview section explicitly states, "The Junos Telemetry Interface supports two transport protocols to export data: User Datagram Protocol (UDP) and gRPC."

2. Juniper Networks TechLibrary. (2024). Junos OS API, Automation, and Telemetry Library. "Junos Telemetry Interface". This document describes the architecture and states, "Data can be streamed through either UDP or gRPC transport."