- Introduction
- play_arrow Junos OS Release Notes for ACX Series
- play_arrow What's New
- play_arrow What's Changed
- play_arrow What’s Changed in 20.4R3
- play_arrow What’s Changed in 20.4R2
- play_arrow What’s Changed in 20.4R1
- play_arrow Known Limitations
- play_arrow Open Issues
- play_arrow Resolved Issues
- play_arrow Resolved Issues: 20.4R3
- play_arrow Resolved Issues: 20.4R2
- play_arrow Resolved Issues: 20.4R1
- Documentation Updates
- play_arrow Junos OS Release Notes for cSRX
- play_arrow What’s New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- play_arrow Junos OS Release Notes for EX Series
- play_arrow What's New
- play_arrow What's Changed
- play_arrow What's Changed in Release 20.4R3
- play_arrow What's Changed in Release 20.4R2
- play_arrow What's Changed in Release 20.4R1
- play_arrow Known Limitations
- play_arrow Open Issues
- play_arrow Resolved Issues
- play_arrow Resolved Issues: 20.4R3
- play_arrow Resolved Issues: 20.4R2
- play_arrow Resolved Issues:20.4R1
- Documentation Updates
- play_arrow Junos OS Release Notes for JRR Series
- play_arrow What's New
- What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- play_arrow Resolved Issues: 20.4R3
- Resolved Issues: 20.4R2
- play_arrow Resolved Issues: 20.4R1
- Documentation Updates
-
- play_arrow What’s New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
-
- What’s New
- What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
-
- 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
-
- play_arrow What's New
- What's Changed
- Known Limitations
- Open Issues
- Resolved Issues
- Documentation Updates
-
- 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
- play_arrow Junos OS Release Notes for MX Series
- play_arrow What's New
- What’s New in Release 20.4R3
- What’s New in Release 20.4R2
- play_arrow 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
- play_arrow What's Changed
- play_arrow What's Changed in Release 20.4R3-S1
- play_arrow What's Changed in Release 20.4R3
- play_arrow What's Changed in Release 20.4R2-S1
- play_arrow What's Changed in Release 20.4R2
- play_arrow What's Changed in Release 20.4R1
- play_arrow Known Limitations
- play_arrow 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
- play_arrow Resolved Issues
- play_arrow 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
- play_arrow 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
- play_arrow 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
- play_arrow Junos OS Release Notes for NFX Series
- play_arrow What’s New
- play_arrow What's Changed
- play_arrow Known Limitations
- play_arrow Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- play_arrow Junos OS Release Notes for PTX Series
- play_arrow What's New
- play_arrow What's Changed
- play_arrow What’s Changed in Release 20.4R3
- play_arrow What's Changed in Release 20.4R2
- play_arrow What's Changed in Release 20.4R1
- play_arrow Known Limitations
- play_arrow Open Issues
- play_arrow Resolved Issues
- play_arrow Resolved Issues: 20.4R3
- play_arrow Resolved Issues: 20.4R2
- play_arrow Resolved Issues: 20.4R1
- Documentation Updates
- play_arrow Junos OS Release Notes for the QFX Series
- play_arrow What's New
- play_arrow What’s New in Release 20.4R3
- What’s New in Release 20.4R2
- play_arrow 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
- play_arrow What's Changed
- play_arrow What’s Changed in Release 20.4R3
- play_arrow What’s Changed in Release 20.4R2
- play_arrow What’s Changed in Release 20.4R1
- play_arrow Known Limitations
- play_arrow Open Issues
- play_arrow Resolved Issues
- play_arrow Resolved Issues: 20.4R3
- play_arrow Resolved Issues: 20.4R2
- play_arrow Resolved Issues: 20.4R1
- Documentation Updates
-
- 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
- play_arrow Junos OS Release Notes for SRX Series
- play_arrow What’s New
- What's New in Release 20.4R3
- What's New in Release 20.4R2
- play_arrow 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
- play_arrow What's Changed
- play_arrow What’s Changed in Release 20.4R3
- play_arrow What’s Changed in Release 20.4R2
- play_arrow What’s Changed in Release 20.4R1
- play_arrow Known Limitations
- play_arrow Open Issues
- play_arrow Resolved Issues
- play_arrow 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
- play_arrow 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
- play_arrow 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
- play_arrow Junos OS Release Notes for vMX
- play_arrow What’s New
- play_arrow What's Changed
- play_arrow Known Limitations
- play_arrow Open Issues
- play_arrow Resolved Issues
- Licensing
- Upgrade Instructions
- play_arrow Junos OS Release Notes for vRR
- play_arrow What’s New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- play_arrow Resolved Issues: 20.4R3
- play_arrow Resolved Issues: 20.4R2
- Resolved Issues: 20.4R1
- play_arrow Junos OS Release Notes for vSRX
- play_arrow What’s New
- What's New in Release 20.4R3
- play_arrow What's New in Release 20.4R2
- play_arrow What's New in Release 20.4R1
- play_arrow What's Changed
- Known Limitations
- play_arrow Open Issues
- play_arrow Resolved Issues
- play_arrow Resolved Issues: 20.4R3
- play_arrow Resolved Issues: 20.4R2
- play_arrow Resolved Issues: 20.4R1
- Upgrading Using ISSU
- Licensing
- Compliance Advisor
- Finding More Information
- Documentation Feedback
- Requesting Technical Support
- Revision History
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
10 November 2023
Table of Contents
- Introduction
- Junos OS Release Notes for ACX Series
- Junos OS Release Notes for cSRX
- Junos OS Release Notes for EX Series
- Junos OS Release Notes for JRR Series
- Junos OS Release Notes for Juniper Secure Connect
- Junos OS Release Notes for Junos Fusion for Enterprise
- What’s New
- What's Changed
- Known Limitations
- Open Issues
- Resolved Issues
- 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 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
- Known Limitations
- 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
- Junos OS Release Notes for NFX Series
- Junos OS Release Notes for PTX Series
- 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
- Known Limitations
- Open Issues
- Resolved Issues
- 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
- Known Limitations
- Open Issues
- 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
- 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
- Junos OS Release Notes for vMX
- Junos OS Release Notes for vRR
- Junos OS Release Notes for vSRX
- Upgrading Using ISSU
- Licensing
- Compliance Advisor
- Finding More Information
- Documentation Feedback
- Requesting Technical Support
- Revision History