Junos OS Evolved Release 25.2R1 Release Notes

Published: 2025-06-27

Introduction

This document provides essential information regarding Junos OS Evolved Release 25.2R1. It details new and updated features, identifies software limitations, and outlines known issues for this release. The notes cover various Juniper Networks platforms, including ACX Series, PTX Series, and QFX Series.

For comprehensive details on this release and its features, users can refer to the Introducing Junos OS Evolved documentation.

Key Areas Covered

The release notes delve into several critical areas of Junos OS Evolved, including:

  • What's New: Highlights new functionalities and enhancements.
  • What's Changed: Details modifications and updates from previous versions.
  • Known Limitations: Lists any identified constraints or issues.
  • Open Issues: Documents unresolved problems.
  • Resolved Issues: Lists issues that have been fixed in this release.

Specific technical topics covered include Authentication and Access Control, Chassis features, Class of Service (CoS), EVPN, High Availability, Interfaces, Junos Telemetry Interface, Multicast, Network Management and Monitoring, Precision Time Protocol (PTP), Routing Policy and Firewall Filters, and more.

Platform Support

This release is applicable to a range of Juniper Networks devices, including:

  • ACX Series (e.g., ACX7024, ACX7024X, ACX7100-32C, ACX7100-48L, ACX7332, ACX7348, ACX7509)
  • PTX Series
  • QFX Series

For detailed information on specific model support and features, please consult the relevant sections within the full release notes.

Further Information

Users can find more information, including software upgrade procedures, licensing details, and documentation feedback channels, within the complete release notes document.

For technical support, Juniper Networks provides resources to assist users with their inquiries.

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