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Release Notes: Junos® OS Release 20.4R3 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

 

14 October 2021

Table of Contents

Introduction
Junos OS Release Notes for ACX Series
What's New
What’s New in Release 20.4R3
What's New in Release 20.4R2
What's New in Release 20.4R1
Hardware
High Availability (HA) and Resiliency
Junos Telemetry Interface
Routing Protocols
Timing and Synchronization
What's Changed
What’s Changed in 20.4R3
Layer 2 Ethernet Services
Network Management and Monitoring
What’s Changed in 20.4R2
EVPN
Junos XML API and Scripting
What’s Changed in 20.4R1
General Routing
MPLS
Network Management and Monitoring
Routing Protocols
User Interface and Configuration
Known Limitations
General Routing
Timing and Synchronization
Open Issues
General Routing
Class of Service (CoS)
Interfaces and Chassis
Network Management and Monitoring
Timing and Synchronisation
User Interface and Configuration
Virtual Chassis
VPNs
Resolved Issues
Resolved Issues: 20.4R3
General Routing
Platform and Infrastructure
Routing Protocols
Resolved Issues: 20.4R2
General Routing
Class of Service (CoS)
Infrastructure
Routing Protocols
Resolved Issues: 20.4R1
Forwarding and Sampling
General Routing
Interfaces and Chassis
Layer 2 Features
Routing Protocols
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 20.4R3
What's New in Release 20.4R2
What's New in Release 20.4R1
What's Changed
What’s Changed in Release 20.4R3
What’s Changed in Release 20.4R2
What’s Changed in Release 20.4R1
Platform and Infrastructure
Known Limitations
Open Issues
Resolved Issues
Resolved Issues: 20.4R3
Resolved Issues: 20.4R2
Resolved Issues: 20.4R1
Junos OS Release Notes for EX Series
What's New
What’s New in Release 20.4R3
What’s New in Release 20.4R2
What’s New in Release 20.4R1
Authentication, Authrorization, and Accounting
EVPN
Interfaces and Chassis
Junos OS XML, API, and Scripting
Network Management and Monitoring
Routing Protocols
Software Installation and Upgrade
Subscriber Management and Services
What's Changed
What's Changed in Release 20.4R3
Layer 2 Ethernet Services
Network Management and Monitoring
What's Changed in Release 20.4R2
EVPN
General Routing
Junos XML API and Scripting
What's Changed in Release 20.4R1
MPLS
Network Management and Monitoring
Platform and Infrastructure
User Interface and Configuration
Known Limitations
EVPN
Platform and Infrastructure
Open Issues
Forwarding and Sampling
General Routing
Infrastructure
Layer 2 Features
Platform and Infrastructure
Routing Policy and Firewall Filters
User Interface and Configuration
Resolved Issues
Resolved Issues: 20.4R3
Class of Service (CoS)
EVPN
General Routing
Infrastructure
Interfaces and Chassis
Layer 2 Ethernet Services
Layer 2 Features
Junos Fusion Enterprise
MPLS
Platform and Infrastructure
Routing Protocols
User Interface and Configuration
Virtual Chassis
Resolved Issues: 20.4R2
Forwarding and Sampling
General Routing
Infrastructure
Interfaces and Chassis
Layer 2 Ethernet Services
MPLS
Platform and Infrastructure
Routing Protocols
User Interface and Configuration
Virtual Chassis
Resolved Issues:20.4R1
Authentication and Access Control
EVPN
Infrastructure
Layer 2 Features
Network Management and Monitoring
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 20.4R3
What's New in Release 20.4R2
What's New in Release 20.4R1
Routing Protocols
What's Changed
Known Limitations
Routing Protocols
Open Issues
Resolved Issues
Resolved Issues: 20.4R3
General Routing
Resolved Issues: 20.4R2
Resolved Issues: 20.4R1
General Routing
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 20.4R3
What's New in Release 20.4R2
What's New in Release 20.4R1
What's Changed
What’s Changed in Release 20.4R3
What’s Changed in Release 20.4R2
What’s Changed in Release 20.4R1
Known Limitations
Open Issues
Resolved Issues
Resolved Issues: 20.4R3
Resolved Issues: 20.4R2
Resolved Issues: 20.4R1
Junos OS Release Notes for Junos Fusion for Enterprise
What’s New
What's Changed
Known Limitations
Open Issues
Resolved Issues
Resolved Issues: 20.4R3
Resolved Issues: 20.4R2
Resolved Issues: 20.4R1
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 for Provider Edge
What's New
What's New in Release 20.4R3
What's New in Release 20.4R2
What's New in Release 20.4R1
Hardware
What's Changed
Known Limitations
Open Issues
Resolved Issues
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 20.4
Junos OS Release Notes for MX Series
What's New
What’s New in Release 20.4R3
What’s New in Release 20.4R2
What’s New in Release 20.4R1
Hardware
EVPN
High Availability (HA) and Resiliency
Interfaces and Chassis
Juniper Extension Toolkit (JET)
Junos OS, XML, API, and Scripting
Junos Telemetry Interface
MPLS
Network Management and Monitoring
Routing Policy and Firewall Filters
Routing Protocols
Services Applications
Software Defined Networking
Software Installation and Upgrade
Software Licensing
Subscriber Management and Services
System Management
System Logging
What's Changed
What's Changed in Release 20.4R3
General Routing
Layer 2 Ethernet Services
Network Management and Monitoring
What's Changed in Release 20.4R2
EVPN
General Routing
Interfaces and Chassis
Junos XML API and Scripting
Layer 2 Ethernet Services
Network Management and Monitoring
VPNs
What's Changed in Release 20.4R1
Class of Service (CoS)
EVPN
General Routing
High Availability (HA) and Resiliency
Interfaces and Chassis
J-Web
MPLS
Network Management and Monitoring
Platform and Infrastructure
Routing Protocols
User Interface and Configuration
Known Limitations
Class of Service (CoS)
General Routing
Interfaces and Chassis
J-Web
MPLS
Network Management and Monitoring
Platform and Infrastructure
VPNs
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
Juniper Extension Toolkit (JET)
Layer 2 Ethernet Services
MPLS
Network Management and Monitoring
Platform and Infrastructure
Routing Policy and Firewall Filters
Routing Protocols
Services Applications
Subscriber Access Management
User Interface and Configuration
VPNs
Resolved Issues
Resolved Issues: 20.4R3
Authentication and Access Control
Class of Service (CoS)
EVPN
Forwarding and Sampling
General Routing
Infrastructure
Interfaces and Chassis
J-Web
Layer 2 Features
Layer 2 Ethernet Services
MPLS
Multicast
Network Address Translation (NAT)
Network Management and Monitoring
Platform and Infrastructure
Routing Policy and Firewall Filters
Routing Protocols
Services Applications
Subscriber Access Management
User Interface and Configuration
Virtual Chassis
VPNs
Resolved Issues: 20.4R2
General Routing
Class of Service (CoS)
EVPN
Forwarding and Sampling
General Routing
Infrastructure
Interfaces and Chassis
Juniper Extension Toolkit (JET)
Layer 2 Ethernet Services
MPLS
Network Management and Monitoring
Platform and Infrastructure
Routing Policy and Firewall Filters
Routing Protocols
Services Applications
User Interface and Configuration
VPNs
Resolved Issues: 20.4R1
EVPN
Forwarding and Sampling
General Routing
Infrastructure
Interfaces and Chassis
Intrusion Detection and Prevention (IDP)
Juniper Extension Toolkit (JET)
J-Web
Layer 2 Ethernet Services
Layer 2 Features
MPLS
Network Address Translation (NAT)
Network Management and Monitoring
Platform and Infrastructure
Routing Policy and Firewall Filters
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 20.4R3
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 20.4R3
Junos OS Release Notes for NFX Series
What’s New
What's New in Release 20.4R2
What's New in Release 20.4R1
Application Security
High Availability
Flow-Based and Packet-Based Processing
Logical Systems and Tenant Systems
Routing Protocols
Security
What's Changed
Junos OS XML API and Scripting
Known Limitations
Interfaces
Open Issues
High Availability
Virtual Network Functions (VNFs)
Resolved Issues
Resolved Issues: 20.4R2
General Routing
Interfaces
Platform and Infrastructure
Resolved Issues: 20.4R1
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 20.4
Junos OS Release Notes for PTX Series
What's New
What’s New in Release 20.4R3
What’s New in Release 20.4R2
What’s New in Release 20.4R1
Junos OS XML, API, and Scripting
Junos Telemetry Interface
MPLS
Network Management and Monitoring
Routing Policy and Firewall Filters
Routing Protocols
Software Installation and Upgrade
System Logging
What's Changed
What’s Changed in Release 20.4R3
General Routing
Unresolved xref
Network Management and Monitoring
What's Changed in Release 20.4R2
General Routing
Interfaces and Chassis
Junos XML API and Scripting
What's Changed in Release 20.4R1
Class of Service (CoS)
General Routing
MPLS
Network Management and Monitoring
User Interface and Configuration
Known Limitations
General Routing
Routing Protocols
Open Issues
General Routing
Layer 2 Ethernet Services
MPLS
Network Management and Monitoring
Platform and Infrastructure
Routing Protocols
User Interface and Configuration
Resolved Issues
Resolved Issues: 20.4R3
General Routing
Unresolved xref
Forwarding and Sampling
General Routing
MPLS
Multicast
Platform and Infrastructure
Routing Protocols
Resolved Issues: 20.4R2
Forwarding and Sampling
General Routing
Infrastructure
Layer 2 Ethernet Services
MPLS
MPLS
Network Management and Monitoring
Platform and Infrastructure
Routing Policy and Firewall Filters
Routing Protocols
VPNs
Resolved Issues: 20.4R1
General Routing
Infrastructure
Interfaces and Chassis
MPLS
Network Management and Monitoring
Routing Protocols
Documentation Updates
Migration, Upgrade, and Downgrade Instructions
Basic Procedure for Upgrading to Release 20.4
Upgrade and Downgrade Support Policy for Junos OS Releases
Upgrading a Router with Redundant Routing Engines
Junos OS Release Notes for the QFX Series
What's New
What’s New in Release 20.4R3
What’s New in Release 20.4R2
What’s New in Release 20.4R1
Hardware
Class of Service (CoS)
EVPN
Flow-Based and Packet-Based Processing
High Availability (HA) and Resiliency
Interfaces and Chassis
IP Tunneling
Juniper Extension Toolkit
Junos OS XML, API, and Scripting
Junos Telemetry Interface
Network Management and Monitoring
Platform and Infrastructure
Routing Policy and Firewall Filters
Routing Protocols
Software Defined Networking (SDN)
Software Installation and Upgrade
System Management
System Logging
What's Changed
What’s Changed in Release 20.4R3
Class of Service (CoS)
EVPN
Interfaces and Chassis
Layer 2 Ethernet Services
Network Management and Monitoring
What’s Changed in Release 20.4R2
EVPN
General Routing
Junos XML API and Scripting
Software Licensing
What’s Changed in Release 20.4R1
Class of Service (CoS)
General Routing
MPLS
Network Management and Monitoring
User Interface and Configuration
Known Limitations
Class of Service (CoS)
EVPN
Layer 2 Features
Platform and Infrastructure
Routing Protocols
Open Issues
Class of Service (CoS)
EVPN
High Availability (HA) and Resiliency
Infrastructure
Interfaces and Chassis
Junos Fusion Satellite Software
Layer 2 Features
Layer 2 Ethernet Services
Platform and Infrastructure
Routing Policy and Firewall Filters
Routing Protocols
VPNs
Resolved Issues
Resolved Issues: 20.4R3
Class of Service (CoS)
EVPN
Interfaces and Chassis
Layer 2 Features
Layer 2 Ethernet Services
Network Management and Monitoring
Platform and Infrastructure
Routing Policy and Firewall Filters
Routing Protocols
Resolved Issues: 20.4R2
EVPN
Forwarding and Sampling
General Routing
Interfaces and Chassis
Layer 2 Features
Layer 2 Ethernet Services
Platform and Infrastructure
Routing Policy and Firewall Filters
Routing Protocols
Resolved Issues: 20.4R1
EVPN
General Routing
Infrastructure
Interfaces and Chassis
Layer 2 Features
Platform and Infrastructure
Routing Policy and Firewall Filters
Routing Protocols
Virtual Chassis
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 20.4R3
What's New in Release 20.4R2
What's New in Release 20.4R1
Application Layer Gateways (ALGs)
Application Security
ATP Cloud
Authentication and Access Control
Chassis Clustering
Flow-Based and Packet-Based Processing
Interfaces and Chassis
Intrusion Detection and Prevention
Juniper Extension Toolkit (JET)
Junos OS XML and API Scripting
J-Web
Layer 2 Features
Logical Systems and Tenant Systems
Multinode High Availability
Network Management and Monitoring
Securing GTP and SCTP Traffic
Security
Unified Threat Management (UTM)
VPNs
What's Changed
What’s Changed in Release 20.4R3
Network Management and Monitoring
What’s Changed in Release 20.4R2
Flow-Based and Packet-Based Processing
Junos XML API and Scripting
VPNs
What’s Changed in Release 20.4R1
Class of Service (CoS)
Flow-Based and Packet-Based Processing
Intrusion Detection and Prevention (IDP)
Interfaces and Chassis
J-Web
Network Address Translation (NAT)
Network Management and Monitoring
Platform and Infrastructure
Securing GTP and SCTP Traffic
User Interface and Configuration
VPNs
Known Limitations
Flow-Based and Packet-Based Processing
General Routing
J-Web
Routing Policy and Firewall Filters
VPNs
Open Issues
Flow-Based and Packet-Based Processing
General Routing
Infrastructure
Intrusion Detection and Prevention (IDP)
Platform and Infrastructure
Routing Policy and Firewall Filters
VPNs
Resolved Issues
Resolved Issues: 20.4R3
Authentication and Access Control
Chassis Clustering
Class of Service (CoS)
EVPN
Flow-Based and Packet-Based Processing
General Routing
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
Services Applications
User Interface and Configuration
VPNs
Resolved Issues: 20.4R2
Chassis Clustering
Flow-Based and Packet-Based Processing
Forwarding and Sampling
General Routing
Interfaces and Chassis
Intrusion Detection and Prevention (IDP)
J-Web
Platform and Infrastructure
Routing Policy and Firewall Filters
Unified Threat Management (UTM)
User Interface and Configuration
VPNs
Resolved Issues: 20.4R1
Application Layer Gateways (ALGs)
Flow-Based and Packet-Based Processing
Interfaces and Chassis
Intrusion Detection and Prevention (IDP)
J-Web
Layer 2 Ethernet Services
Network Address Translation (NAT)
Platform and Infrastructure
Routing Policy and Firewall Filters
Routing Protocols
Subscriber Access Management
Unified Threat Management (UTM)
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 20.4R3
What's New in Release 20.4R2
What's New in Release 20.4R1
EVPN
Juniper Extension Toolkit (JET)
Junos OS XML ,API, and Scripting
Network Management and Monitoring
Routing Protocols
What's Changed
What’s Changed in Release 20.4R3
Network Management and Monitoring
Platform and Infrasturcture
What’s Changed in Release 20.4R2
What’s Changed in Release 20.4R1
Licensing
Known Limitations
Platform and Infrastructure
Open Issues
General Routing
Resolved Issues
Resolved Issues: 20.4R3
Platform and Infrastructure
Resolved Issues: 20.4R2
General Routing
Resolved Issues: 20.4R1
Interfaces and Chassis
Network Management and Monitoring
Licensing
Upgrade Instructions
Junos OS Release Notes for vRR
What’s New
What's New in Release 20.4R3
What's New in Release 20.4R2
What's New in Release 20.4R1
Routing Protocols
What's Changed
What’s Changed in Release 20.4R3
What’s Changed in Release 20.4R2
What’s Changed in Release 20.4R1
Known Limitations
Open Issues
Resolved Issues
Resolved Issues: 20.4R3
General Routing
Resolved Issues: 20.4R2
General Routing
Resolved Issues: 20.4R1
Junos OS Release Notes for vSRX
What’s New
What's New in Release 20.4R3
What's New in Release 20.4R2
Platform and Infrastructure
What's New in Release 20.4R1
ATP Cloud
Flow-Based Packet-Based Processing
High Availability
Juniper Extension Toolkit (JET)
Junos OS XML ,API, and Scripting
Network Management and Monitoring
Platform and Infrastructure
Routing Protocols
VPNs
What's Changed
What’s Changed in Release 20.4R3
Network Management and Monitoring
What’s Changed in Release 20.4R2
What’s Changed in Release 20.4R1
Platform and Infrastructure
Known Limitations
Open Issues
Platform and Infrastructure
Resolved Issues
Resolved Issues: 20.4R3
Authentication and Access Control
Flow-Based and Packet-Based Processing
General Routing
Intrusion Detection and Prevention (IDP)
J-Web
Platform and Infrastructure
Resolved Issues: 20.4R2
J-Web
Platform and Infrastructure
Routing Protocols
Resolved Issues: 20.4R1
Application Security
Chassis Clustering
CLI
Flow-Based and Packet-Based Processing
Install and Upgrade
Interfaces and Chassis
Intrusion Detection and Prevention (IDP)
Platform and Infrastructure
Routing Policy and Firewall Filters
User Access and Authentication
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