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Release Notes: Junos® OS Release 20.3R3 for the ACX Series, cSRX, EX Series, JRR Series, Juniper Secure Connect, Junos Fusion, MX Series, NFX Series, PTX Series, QFX Series, SRX Series, vMX, vRR, and vSRX

 

24 March 2022

Table of Contents

Introduction
Junos OS Release Notes for ACX Series
What's New
What's New in Release 20.3R3
What's New in Release 20.3R2
What's New in Release 20.3R1
Hardware
EVPNS
Multicast
Network Management and Monitoring
Routing Protocols
Segment Routing
What's Changed
What’s Changed in Release 20.3R3
Junos OS XML API and Scripting
What’s Changed in Release 20.3R2
Junos XML API and Scripting
MPLS
User Interface and Configuration
What’s Changed in Release 20.3R1
Junos OS, XML, API, and Scripting
Routing Protocols
Known Limitations
General Routing
Open Issues
General Routing
Interfaces and Chassis
Network Management and Monitoring
Virtual Chassis
Resolved Issues
Resolved Issues: 20.3R3
General Routing
Class of Service (CoS)
Infrastructure
Platform and Infrastructure
Resolved Issues: 20.3R2
General Routing
Class of Service
Forwarding and Sampling
Layer 2 Features
Resolved Issues: 20.3R1
General Routing
Interfaces and Chassis
MPLS
Routing Protocols
VPNs
Documentation Updates
Migration, Upgrade, and Downgrade Instructions
Upgrade and Downgrade Support Policy for Junos OS Releases
Junos OS Release Notes for cSRX
What’s New
What's New in Release 20.3R3
What's New in Release 20.3R2
What's New in Release 20.3R1
Installation and Upgrade
What's Changed
What’s Changed in Release 20.3R3
What’s Changed in Release 20.3R2
What’s Changed in Release 20.3R1
Download Juniper Signature Pack on cSRX
Known Limitations
Open Issues
Resolved Issues
Resolved Issues: 20.3R3
Resolved Issues: 20.3R2
Resolved Issues: 20.3R1
Junos OS Release Notes for EX Series
What's New
What’s New in Release 20.3R3
What’s New in Release 20.3R2
What’s New in Release 20.3R1
Hardware
Class of Service (CoS)
EVPN
Junos OS XML, API, and Scripting
Junos Telemetry Interface
MPLS
Network Management and Monitoring
open-config
Routing Policy and Firewall Filters
Software Installation and Upgrade
What's Changed
What’s Changed in Release 20.3R3
Junos OS XML API and Scripting
Software Licensing
What’s Changed in Release 20.3R2
Junos XML API and Scripting
MPLS
Platform and Infrastructure
Software Licensing
User Interface and Configuration
What’s Changed in Release 20.3R1
Class of Service (CoS)
Junos OS, XML, API, and Scripting
Routing Protocols
Subscriber Management and Services
Known Limitations
General Routing
EVPN
Infrastructure
Platform and Infrastructure
Open Issues
General Routing
Authentication and Access Control
EVPN
Forwarding and Sampling
Infrastructure
Layer 2 Features
Network Management and Monitoring
Platform and Infrastructure
User Interface and Configuration
Resolved Issues
Resolved Issues: 20.3R3
General Routing
Class of Service (CoS)
Forwarding and Sampling
High Availability (HA) and Resiliency
Infrastructure
Interfaces and Chassis
Layer 2 Features
Layer 2 Ethernet Services
MPLS
Platform and Infrastructure
Routing Protocols
Virtual Chassis
Resolved Issues: 20.3R2
Forwarding and Sampling
General Routing
Infrastructure
Layer 2 Features
Platform and Infrastructure
Routing Protocols
User Interface and Configuration
Resolved Issues: 20.3R1
Authentication and Access Control
EVPN
General Routing
Infrastructure
Interfaces and Chassis
Layer 2 Ethernet Services
Layer 2 Features
MPLS
Platform and Infrastructure
Routing Protocols
User Interface and Configuration
Virtual Chassis
Documentation Updates
Migration, Upgrade, and Downgrade Instructions
Upgrade and Downgrade Support Policy for Junos OS Releases
Junos OS Release Notes for JRR Series
What's New
What's New in Release 20.3R3
What's New in Release 20.3R2
What's New in Release 20.3R1
Routing Protocols
What's Changed
Known Limitations
Open Issues
Resolved Issues
Resolved Issues: 20.3R3
General Routing
Resolved Issues: 20.3R2
General Routing
Resolved Issues: 20.3R1
Documentation Updates
Migration, Upgrade, and Downgrade Instructions
Upgrade and Downgrade Support Policy for Junos OS Releases
Junos OS Release Notes for Juniper Secure Connect
What’s New
What's New in Release 20.3R3
What's New in Release 20.3R2
What's New in Release 20.3R1
Juniper Secure Connect
What's Changed
What’s Changed in Release 20.3R3
What’s Changed in Release 20.3R2
What’s Changed in Release 20.3R1
Known Limitations
Open Issues
Resolved Issues
Resolved Issues: 20.3R3
Resolved Issues: 20.3R2
Resolved Issues: 20.3R1
Junos OS Release Notes for Junos Fusion for Enterprise
What’s New
What’s New in Release 20.3R3
What’s New in Release 20.3R2
What’s New in Release 20.3R1
What's Changed
What’s Changed in Release Junos OS 20.3R3
What’s Changed in Release Junos OS 20.3R2
What’s Changed in Release Junos OS 20.3R1
Known Limitations
Open Issues
Resolved Issues
Resolved Issues: Release 20.3R3
Resolved Issues: Release 20.3R2
Resolved Issues: Release 20.3R1
Documentation Updates
Migration, Upgrade, and Downgrade Instructions
Basic Procedure for Upgrading Junos OS on an Aggregation Device
Upgrading an Aggregation Device with Redundant Routing Engines
Preparing the Switch for Satellite Device Conversion
Converting a Satellite Device to a Standalone Switch
Upgrade and Downgrade Support Policy for Junos OS Releases
Downgrading Junos OS
Junos OS Release Notes for Junos Fusion Provider Edge
What's New
What's Changed
Known Limitations
Open Issues
Resolved Issues
Resolved Issues: 20.3R3
Resolved Issues: 20.3R2
Resolved Issues: 20.3R1
Junos Fusion Provider Edge
Documentation Updates
Migration, Upgrade, and Downgrade Instructions
Basic Procedure for Upgrading an Aggregation Device
Upgrading an Aggregation Device with Redundant Routing Engines
Preparing the Switch for Satellite Device Conversion
Converting a Satellite Device to a Standalone Device
Upgrading an Aggregation Device
Upgrade and Downgrade Support Policy for Junos OS Releases
Downgrading from Junos OS Release 20.1
Junos OS Release Notes for MX Series
What's New
New and Changed Features: 20.3R3
New and Changed Features: 20.3R2
New and Changed Features: 20.3R1
Hardware
Authentication, Authorization, and Accounting
Class of Service (CoS)
EVPN
High Availability (HA) and Resiliency
Interfaces and Chassis
IP Tunneling
Juniper Extension Toolkit
Junos OS XML, API, and Scripting
Junos Telemetry Interface
Layer 2 Features
Layer 2 VPN
Layer 3 Features
MPLS
Multicast
Network Management and Monitoring
Next Gen Services
Port Security
Routing Protocols
Segment Routing
Services Applications
Software Defined Networking (SDN)
System Management
What's Changed
What’s Changed in Release 20.3R3
Junos OS XML API and Scripting
Layer 2 Ethernet Services
What’s Changed in Release 20.3R2
General Routing
Junos XML API and Scripting
MPLS
User Interface and Configuration
What’s Changed in Release 20.3R1
EVPN
General Routing
High Availability (HA) and Resiliency
Infrastructure
Interfaces and Chassis
Junos OS, XML, API, and Scripting
J-Web
Routing Protocols
Services Applications
Subscriber Management and Services
Known Limitations
EVPN
General Routing
Interfaces and Chassis
MPLS
Platform and Infrastructure
Routing Protocols
Network Management and Monitoring
Platform and Infrastructure
Routing Protocols
Subscriber Management and Services
Open Issues
Class of Service (CoS)
EVPN
Flow-based and Packet-based Processing
Forwarding and Sampling
General Routing
High Availability (HA) and Resiliency
Infrastructure
Interfaces and Chassis
Intrusion Detection and Prevention (IDP)
Layer 2 Ethernet Services
MPLS
Network Management and Monitoring
Platform and Infrastructure
Routing Protocols
Subscriber Access Management
User Interface and Configuration
Resolved Issues
Resolved Issues: 20.3R3
Class of Service (CoS)
EVPN
Forwarding and Sampling
General Routing
Interfaces and Chassis
Layer 2 Ethernet Services
Multicast
Network Management and Monitoring
Platform and Infrastructure
Routing Policy and Firewall Filters
Routing Protocols
Services Applications
User Interface and Configuration
VPNs
Resolved Issues: 20.3R2
EVPN
Forwarding and Sampling
General Routing
Infrastructure
Interfaces and Chassis
MPLS
Network Address Translation (NAT)
Network Management and Monitoring
Platform and Infrastructure
Routing Policy and Firewall Filters
Routing Protocols
Services Applications
Subscriber Access Management
VPNs
Resolved Issues: 20.3R1
Application Layer Gateways (ALGs)
Class of Service (CoS)
EVPN
Forwarding and Sampling
General Routing
Infrastructure
Interfaces and Chassis
Intrusion Detection and Prevention (IDP)
J-Web
Juniper Extension Toolkit (JET)
Junos Fusion Provider Edge
Layer 2 Ethernet Services
MPLS
Network Management and Monitoring
Platform and Infrastructure
Routing Protocols
Services Applications
Subscriber Access Management
User Interface and Configuration
VPNs
Documentation Updates
Migration, Upgrade, and Downgrade Instructions
Basic Procedure for Upgrading to Release 20.3R3
Procedure to Upgrade to FreeBSD 11.x-Based Junos OS
Procedure to Upgrade to FreeBSD 6.x-Based Junos OS
Upgrade and Downgrade Support Policy for Junos OS Releases
Upgrading a Router with Redundant Routing Engines
Downgrading from Release 20.3R3
Junos OS Release Notes for NFX Series
What’s New
What’s New in Release 20.3R3
What’s New in Release 20.3R2
What’s New in Release 20.3R1
Application Security
Wireless WAN
What's Changed
What’s Changed in Release 20.3R3
What’s Changed in Release 20.3R2
What’s Changed in Release 20.3R1
Known Limitations
Open Issues
Platform and Infrastructure
Resolved Issues
Resolved Issues: 20.3R3
General Routing
Platform and Infrastructure
Resolved Issues: 20.3R2
Interfaces
Platform and Infrastructure
Resolved Issues: 20.3R1
Application Security
High Availability
Interfaces
Platform and Infrastructure
Documentation Updates
Migration, Upgrade, and Downgrade Instructions
Upgrade and Downgrade Support Policy for Junos OS Releases
Basic Procedure for Upgrading to Release 20.3
Junos OS Release Notes for PTX Series
What's New
What’s New in Release 20.3R3
What’s New in Release 20.3R2
What’s New in Release 20.3R1
Hardware
Authentication, Authorization, and Accounting
IP Tunneling
Juniper Extension Toolkit (JET)
Junos OS XML, API, and Scripting
Junos Telemetry Interface
Layer 3 Features
MPLS
Network Management and Monitoring
Port Security
Routing Protocols
Segment Routing
Services Applications
What's Changed
What's Changed in Release 20.3R3
General Routing
Interfaces and Chassis
Junos OS XML API and Scripting
Layer 2 Ethernet Services
Network Management and Monitoring
What's Changed in Release 20.3R2
General Routing
Junos OS XML API and Scripting
MPLS
User Interface and Configuration
What's Changed in Release 20.3R1
Class of Service (CoS)
General Routing
High Availability (HA) and Resiliency
Junos OS XML, API, and Scripting
Juniper Extension Toolkit (JET)
MPLS
Routing Protocols
Known Limitations
General Routing
MPLS
Routing Protocols
Open Issues
General Routing
Layer 2 Ethernet Services
MPLS
Routing Protocols
Resolved Issues
Resolved Issues: 20.3R3
General Routing
Infrastructure
Multicast
Network Management and Monitoring
Platform and Infrastructure
Routing Policy and Firewall Filters
Routing Protocols
Resolved Issues: 20.3R2
General Routing
Forwarding and Sampling
Infrastructure
Interfaces and Chassis
Network Management and Monitoring
Platform and Infrastructure
Routing Policy and Firewall Filters
Routing Protocols
Resolved Issues: 20.3R1
General Routing
Interfaces and Chassis
MPLS
Network Management and Monitoring
Routing Protocols
Documentation Updates
Migration, Upgrade, and Downgrade Instructions
Basic Procedure for Upgrading to Release 20.3
Upgrade and Downgrade Support Policy for Junos OS Releases
Upgrading a Router with Redundant Routing Engines
Junos OS Release Notes for QFX Series
What's New
What’s New in Release 20.3R3
What’s New in Release 20.3R2
What’s New in Release 20.3R1
Hardware
EVPN
High Availability (HA) and Resiliency
IP Tunneling
Juniper Extension Toolkit (JET)
alpha
Junos Telemetry Interface
Layer 3 Features
MPLS
Network Management and Monitoring
Routing Policy and Firewall Filters
Routing Protocols
Security
Services Applications
Software Licensing
Virtual Chassis
What's Changed
What’s Changed in Release 20.3R3
Interfaces and Chassis
Junos OS XML API and Scripting
Layer 2 Ethernet Services
Network Management and Monitoring
What’s Changed in Release 20.3R2
General Routing
Junos XML API and Scripting
MPLS
User Interface and Configuration
What’s Changed in Release 20.3R1
Class of Service (CoS)
General Routing
High Availability (HA) and Resiliency
Interfaces and Chassis
Junos OS XML, API, and Scripting
Routing Protocols
Known Limitations
Class of Service (CoS)
Layer 2 Features
Layer 2 Ethernet Services
Platform and Infrastructure
Routing Protocols
Open Issues
EVPN
High Availability (HA) and Resiliency
Infrastructure
Layer 2 Features
Platform and Infrastructure
Routing Protocols
User Interface and Configuration
Resolved Issues
Resolved Issues: Release 20.3R3
Class of Service (CoS)
EVPN
Forwarding and Sampling
Interfaces and Chassis
Layer 2 Ethernet Services
Layer 2 Features
Network Management and Monitoring
Platform and Infrastructure
Routing Policy and Firewall Filters
Routing Protocols
User Interface and Configuration
Resolved Issues: Release 20.3R2
EVPN
Forwarding and Sampling
Interfaces and Chassis
Infrastructure
Layer 2 Features
Platform and Infrastructure
Routing Policy and Firewall Filters
Routing Protocols
User Interface and Configuration
Virtual Chassis
Resolved Issues: Release 20.3R1
Class of Service (CoS)
EVPN
Infrastructure
Interfaces and Chassis
Layer 2 Features
Layer 2 Ethernet Services
MPLS
Platform and Infrastructure
Routing Protocols
User Interface and Configuration
Documentation Updates
Migration, Upgrade, and Downgrade Instructions
Upgrading Software on QFX Series Switches
Installing the Software on QFX10002-60C Switches
Installing the Software on QFX10002 Switches
Upgrading Software from Junos OS Release 15.1X53-D3X to Junos OS Release 15.1X53-D60, 15.1X53-D61.7, 15.1X53-D62, and 15.1X53-D63 on QFX10008 and QFX10016 Switches
Installing the Software on QFX10008 and QFX10016 Switches
Performing a Unified ISSU
Preparing the Switch for Software Installation
Upgrading the Software Using Unified ISSU
Upgrade and Downgrade Support Policy for Junos OS Releases
Junos OS Release Notes for SRX Series
What’s New
What's New in Release 20.3R3
What's New in Release 20.3R2
What's New in Release 20.3R1
Application Security
Authentication and Access Control
Chassis Clustering
Flow-Based and Packet-Based Processing
Installation and Upgrade
Interfaces and Chassis
Intrusion Detection and Prevention (IDP)
Junos Telemetry Interface
Junos OS XML API and Scripting
J-Web
Layer 2 Features
Logical Systems and Tenant Systems
Network Management and Monitoring
Routing and Forwarding Options
Security
Unified Threat Management (UTM)
VPNs
What's Changed
What’s Changed in Release 20.3R3
Junos OS XML API and Scripting
What’s Changed in Release 20.3R2
Flow-Based and Packet-Based Processing
General Routing
MPLS
Junos XML API and Scripting
User Interface and Configuration
VPNs
What’s Changed in Release 20.3R1
Authentication and Access Control
Junos OS XML API and Scripting
J-Web
Network Address Translation (NAT)
System Logs
Known Limitations
General Routing
J-Web
VPNs
Open Issues
Flow-Based and Packet-Based Processing
General Routing
Interfaces and Chassis
Intrusion Detection and Prevention (IDP)
J-Web
User Interface and Configuration
VPNs
Resolved Issues
Resolved Issues: 20.3R3
Forwarding and Sampling
General Routing
Interfaces and Chassis
Intrusion Detection and Prevention (IDP)
Network Management and Monitoring
Routing Policy and Firewall Filters
Unified Threat Management (UTM)
VPNs
Resolved Issues: 20.3R2
Application Layer Gateways (ALGs)
Chassis Clustering
Flow-Based and Packet-Based Processing
General Routing
Interfaces and Chassis
Intrusion Detection and Prevention (IDP)
J-Web
Platform and Infrastructure
Routing Policy and Firewall Filters
Subscriber Access Management
Unified Threat Management (UTM)
VPNs
Resolved Issues: 20.3R1
Application Security
Chassis Clustering
Flow-Based and Packet-Based Processing
Infrastructure
Interfaces and Chassis
Intrusion Detection and Prevention (IDP)
J-Web
MPLS
Network Address Translation (NAT)
Platform and Infrastructure
Routing Policy and Firewall Filters
Routing Protocols
VPNs
Documentation Updates
Migration, Upgrade, and Downgrade Instructions
Upgrade and Downgrade Support Policy for Junos OS Releases and Extended End-Of-Life Releases
Junos OS Release Notes for vMX
What’s New
What's New in Release 20.3R3
What's New in Release 20.3R2
What's New in Release 20.3R1
Installation and Upgrade
Juniper Extension Toolkit (JET)
System Management
What's Changed
What’s Changed in Release 20.3R3
Junos OS XML API and Scripting
What’s Changed in Release 20.3R2
What’s Changed in Release 20.3R1
Known Limitations
Open Issues
Platform and Infrastructure
Resolved Issues
Resolved Issues: 20.3R3
Resolved Issues: 20.3R2
Routing Protocols
Resolved Issues: 20.3R1
Licensing
Upgrade Instructions
Junos OS Release Notes for vRR
What’s New
What's New in Release 20.3R3
What's New in Release 20.3R2
What's New in Release 20.3R1
Routing Protocols
What's Changed
What’s Changed in Release 20.3R3
What’s Changed in Release 20.3R2
What’s Changed in Release 20.3R1
Known Limitations
Routing Protocols
Open Issues
Resolved Issues
Resolved Issues: 20.3R3
Resolved Issues: 20.3R2
General Routing
Resolved Issues: 20.3R1
Junos OS Release Notes for vSRX
What’s New
What's New in Release 20.3R3
What's New in Release 20.3R2
What's New in Release 20.3R1
Interfaces and Chassis
Juniper ATP Cloud
Junos Telemetry Interface
Management
Performance and Scaling
VPNs
What's Changed
What’s Changed in Release 20.3R3
Junos OS XML API and Scripting
What’s Changed in Release 20.3R2
What’s Changed in Release 20.3R1
Known Limitations
Intrusion Detection and Prevention (IDP)
J-Web
Open Issues
J-Web
User Access and Authentication
Resolved Issues
Resolved Issues: 20.3R3
Intrusion Detection and Prevention (IDP)
Platform and Infrastructure
Routing Protocols
VPNs
Resolved Issues: 20.3R2
Application Security
Chassis Clustering
CLI
Intrusion Detection and Prevention (IDP)
Platform and Infrastructure
VPNs
Resolved Issues: 20.3R1
Application Security
Intrusion Detection and Prevention (IDP)
J-Web
Platform and Infrastructure
Routing Policy and Firewall Filters
Unified Threat Management (UTM)
VPNs
Migration, Upgrade, and Downgrade Instructions
Upgrading Software Packages
Validating the OVA Image
Upgrading Using ISSU
Licensing
Compliance Advisor
Finding More Information
Documentation Feedback
Requesting Technical Support
Revision History