- 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 Release 20.2R3-S3
- play_arrow What's Changed in Release 20.2R3
- play_arrow What’s Changed in Release 20.2R2
- play_arrow What’s Changed in Release 20.2R1
- play_arrow Known Limitations
- play_arrow Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- play_arrow Junos OS Release Notes for cSRX
- 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 20.2R3
- play_arrow What’s Changed in Release 20.2R2
- play_arrow What’s Changed in Release 20.2R1
- play_arrow Known Limitations
- play_arrow Open Issues
- play_arrow Resolved Issues
- play_arrow Resolved Issues: 20.2R3
- play_arrow Resolved Issues: 20.2R2
- play_arrow Resolved Issues: 20.2R1
- 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: 20.2R3
- play_arrow Resolved Issues: 20.2R2
- play_arrow Resolved Issues: 20.2R1
- Documentation Updates
-
- 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
- play_arrow 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 20.1
- play_arrow Junos OS Release Notes for MX Series
- play_arrow What's New
- What’s New in Release 20.2R3
- play_arrow What’s New in Release 20.2R2-S3
- play_arrow What’s New in Release 20.2R2-S2
- What’s New in Release 20.2R2
- play_arrow What’s New in Release 20.2R1-S1
- play_arrow What’s New in Release 20.2R1
- Class of Service (CoS)
- EVPN
- High Availability (HA) and Resiliency
- Interfaces and Chassis
- Juniper Extension Toolkit (JET)
- Junos Telemetry Interface
- Layer 2 VPN
- Layer 3 Features
- Management
- MPLS
- Multicast
- Network Management and Monitoring
- Next Gen Services
- Operation, Administration, and Maintenance (OAM)
- Routing Policy and Firewall Filters
- Routing Protocols
- Services Applications
- Software-Defined Networking (SDN)
- Subscriber Management and Services
- System Logging
- System Management
- Virtual Chassis
- play_arrow What's Changed
- play_arrow What’s Changed in Release 20.2R3
- play_arrow What’s Changed in Release 20.2R2
- play_arrow What’s Changed in Release 20.2R1
- play_arrow Known Limitations
- play_arrow Open Issues
- Class of Service (CoS)
- EVPN
- Forwarding and Sampling
- General Routing
- High Availability (HA) and Resiliency
- Infrastructure
- Interfaces and Chassis
- Layer 2 Ethernet Services
- MPLS
- 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: 20.2R3
- Class of Service (CoS)
- EVPN
- Forwarding and Sampling
- General Routing
- Infrastructure
- Interfaces and Chassis
- 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: 20.2R2
- Application Layer Gateways (ALGs)
- EVPN
- Forwarding and Sampling
- General Routing
- Infrastructure
- Interfaces and Chassis
- Intrusion Detection and Prevention (IDP)
- Junos Fusion for Provider Edge
- Layer 2 Ethernet Services
- MPLS
- Network Address Translation (NAT)
- Network Management and Monitoring
- Platform and Infrastructure
- Routing Protocols
- Services Applications
- Subscriber Access Management
- User Interface and Configuration
- VPNs
- play_arrow Resolved Issues: 20.2R1
- Application Layer Gateways (ALGs)
- Class of Service (CoS)
- EVPN
- Forwarding and Sampling
- General Routing
- High Availability (HA) and Resiliency
- Infrastructure
- Interfaces and Chassis
- Intrusion Detection and Prevention (IDP)
- J-Web
- Junos Fusion for Enterprise
- Junos Fusion Satellite Software
- Layer 2 Ethernet Services
- Layer 2 Features
- MPLS
- Platform and Infrastructure
- Routing Policy and Firewall Filters
- Routing Protocols
- Services Applications
- Subscriber Access Management
- VPNs
- play_arrow Documentation Updates
- play_arrow Junos OS Release Notes for NFX Series
- play_arrow What’s New
- play_arrow What's Changed
- Known Limitations
- play_arrow Open Issues
- play_arrow Resolved Issues
- play_arrow Resolved Issues: 20.2R3
- play_arrow Resolved Issues: 20.2R2
- play_arrow Resolved Issues: 20.2R1
- Documentation Updates
- play_arrow Junos OS Release Notes for PTX Series
- play_arrow What's New
- play_arrow What's Changed
- play_arrow Known Limitations
- play_arrow Open Issues
- play_arrow Resolved Issues
- play_arrow Resolved Issues: 20.2R3
- play_arrow Resolved Issues: 20.2R2
- play_arrow Resolved Issues: 20.2R1
- Documentation Updates
- play_arrow Junos OS Release Notes for the QFX Series
- play_arrow What's New
- What’s New in Release 20.2R3
- What’s New in Release 20.2R2
- play_arrow What’s New in Release 20.2R1-S1
- play_arrow What’s New in Release 20.2R1
- Hardware
- Authentication, Authorization, and Accounting
- Class of Service
- EVPN
- High Availability (HA) and Resiliency
- Interfaces and Chassis
- Juniper Extension Toolkit (JET)
- Junos Telemetry Interface
- Layer 2 Features
- Multicast
- Network Management and Monitoring
- Routing Policy and Firewall Filters
- Virtual Chassis
- play_arrow What's Changed
- play_arrow What’s Changed in Release 20.2R3
- play_arrow What’s Changed in Release 20.2R2
- play_arrow What’s Changed in Release 20.2R1
- play_arrow Known Limitations
- play_arrow Open Issues
- play_arrow Resolved Issues
- play_arrow Resolved Issues: 20.2R3
- Resolved Issues: 20.2R2-S2
- play_arrow Resolved Issues: 20.2R2
- play_arrow Resolved Issues: 20.2R1
- 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 20.2R3
- What’s New in Release 20.2R2
- play_arrow What’s New in Release 20.2R1
- Application Security
- Authentication and Access Control
- Flow-Based and Packet-Based Processing
- General Packet Radio Switching (GPRS)
- Intrusion Detection and Prevention (IDP)
- Junos Telemetry Interface
- Juniper Extension Toolkit (JET)
- J-Web
- ATP Cloud
- Logical Systems and Tenant Systems
- Multicast
- Network Address Translation (NAT)
- Network Management and Monitoring
- Platform and Infrastructure
- Port Security
- Security
- Software Installation and Upgrade
- Unified Threat Management (UTM)
- play_arrow What's Changed
- play_arrow What's Changed in Release 20.2R3
- play_arrow What's Changed in Release 20.2R2
- play_arrow What's Changed in Release 20.2R1-S1
- play_arrow What's Changed in Release 20.2R1
- play_arrow Known Limitations
- play_arrow Open Issues
- play_arrow Resolved Issues
- play_arrow Resolved Issues: 20.2R3
- play_arrow Resolved Issues: 20.2R2
- 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
- Unified Threat Management (UTM)
- VPNs
- play_arrow Resolved Issues: 20.2R1
- Application Layer Gateways (ALGs)
- Authentication and Access Control
- Flow-Based and Packet-Based Processing
- Intrusion Detection and Prevention (IDP)
- J-Web
- Layer 2 Ethernet Services
- Multiprotocol Label Switching (MPLS)
- Network Address Translation (NAT)
- Network Management and Monitoring
- Platform and Infrastructure
- Routing Policy and Firewall Filters
- Routing Protocols
- 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
- Known Limitations
- 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: 20.2R3
- play_arrow Junos OS Release Notes for vSRX
- play_arrow What’s New
- play_arrow What's Changed
- play_arrow Known Limitations
- play_arrow Open Issues
- play_arrow Resolved Issues
- Upgrading Using ISSU
- Licensing
- Compliance Advisor
- Finding More Information
- Documentation Feedback
- Requesting Technical Support
- Revision History
Introduction
Junos OS runs on the following Juniper Networks® hardware: ACX Series, cSRX, EX Series, JRR Series, Junos fusion for enterprise, Junos Fusion for provider edge, MX Series, NFX Series, PTX Series, QFX Series, SRX Series, vMX, vRR, and vSRX.
These release notes accompany Junos OS Release 20.2R3 for the ACX Series, cSRX, EX Series, JRR Series, Junos fusion for enterprise, Junos fusion for provider edge, MX Series, NFX Series, PTX Series, QFX Series, SRX Series, vMX, vRR, and vSRX. They describe new and changed features, limitations, and known and resolved problems in the hardware and software.
In Focus guide
Important Information: