- Introduction
- Cover Page
- play_arrow Junos OS Release Notes for ACX Series
- play_arrow Junos OS Release Notes for cPCE
- play_arrow Junos OS Release Notes for cRPD
- play_arrow Junos OS Release Notes for cSRX
- play_arrow Junos OS Release Notes for EX Series
- play_arrow Junos OS Release Notes for JRR Series
- play_arrow Junos OS Release Notes for MX Series
- play_arrow What's New
- Hardware
- Authentication and Access Control
- Chassis
- Class of Service
- Dynamic Host Configuration Protocol
- EVPN
- Forwarding Options
- High Availability
- Interfaces
- Juniper Extension Toolkit (JET)
- Junos OS API and Scripting
- Junos Telemetry Interface
- MPLS
- Network Management and Monitoring
- Precision Time Protocol (PTP)
- Public Key Infrastructure (PKI)
- Routing Policy and Firewall Filters
- Routing Protocols
- Securing GTP and SCTP Traffic
- Serviceability
- Services Applications
- Source Packet Routing in Networking (SPRING) or Segment Routing
- Software Installation and Upgrade
- Subscriber Management and Services
- Additional Features
- What's Changed
- Known Limitations
- Open Issues
- Resolved Issues
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for QFX Series
-
- play_arrow What's New
- Hardware
- Application Identification (AppID)
- Chassis
- Flow-Based and Packet-Based Processing
- High Availability
- Interfaces
- Juniper Advanced Threat Prevention Cloud (ATP Cloud)
- Juniper Extension Toolkit (JET)
- J-Web
- Network Management and Monitoring
- Public Key Infrastructure (PKI)
- Serviceability
- Software Installation and Upgrade
- VPNs
- Additional Features
- What's Changed
- Known Limitations
- Open Issues
- Resolved Issues
- Migration, Upgrade, and Downgrade Instructions
- Documentation Updates
- play_arrow Junos OS Release Notes for vSRX
- Licensing
- Finding More Information
- Requesting Technical Support
- Revision History
Migration, Upgrade, and Downgrade Instructions
This section contains the procedure to upgrade Junos OS, and the upgrade and downgrade policies for Junos OS for the NFX Series. Upgrading or downgrading Junos OS might take several hours, depending on the size and configuration of the network.
For information about NFX product compatibility, see NFX Product Compatibility.
Upgrade and Downgrade Support Policy for Junos OS Releases
We have two types of releases, standard EOL and EEOL:
Standard End of Life (EOL) releases have engineering support for twenty four months after the first general availability date and customer support for an additional six more months.
Extended End of Life (EEOL) releases have engineering support for sixty months after the first general availability date and customer support for an additional six more months.
Note:The sixty months of support for EEOL releases is introduced in Junos OS 23.2 release and is available for all later releases. For releases prior to 23.2, the support for EEOL releases continues to be thirty six months.
For both standard EOL and EEOL releases, you can upgrade to the next three subsequent releases or downgrade to the previous three releases. For example, you can upgrade from 21.2 to the next three releases – 21.3, 21.4 and 22.1 or downgrade to the previous three releases – 21.1, 20.4 and 20.3.
For EEOL releases only, you have an additional option - you can upgrade directly from one EEOL release to the next two subsequent EEOL releases, even if the target release is beyond the next three releases. Likewise, you can downgrade directly from one EEOL release to the previous two EEOL releases, even if the target release is beyond the previous three releases. For example, 21.2 is an EEOL release. Hence, you can upgrade from 21.2 to the next two EEOL releases – 21.4 and 22.2 or downgrade to the previous two EEOL releases – 20.4 and 20.2.
Release Type | End of Engineering (EOE) | End of Support (EOS) | Upgrade/Downgrade to subsequent 3 releases | Upgrade/Downgrade to subsequent 2 EEOL releases |
---|---|---|---|---|
Standard End of Life (EOL) | 24 months | End of Engineering + 6 months | Yes | No |
Extended End of Life (EEOL) | 60 months | End of Engineering + 6 months | Yes | Yes |
For more information about EOL and EEOL releases, see https://www.juniper.net/support/eol/junos.html.
For information about software installation and upgrade, see the Installation and Upgrade Guide.
Basic Procedure for Upgrading to Release 24.2
When upgrading or downgrading Junos OS, use the jinstall
package. For
information about the contents of the jinstall
package and details of the
installation process, see the Installation and Upgrade Guide. Use other packages, such as the
jbundle
package, only when so instructed by a Juniper Networks support
representative.
The installation process rebuilds the file system and completely reinstalls Junos OS. Configuration information from the previous software installation is retained, but the contents of log files might be erased. Stored files on the device, such as configuration templates and shell scripts (the only exceptions are the juniper.conf and ssh files), might be removed. To preserve the stored files, copy them to another system before upgrading or downgrading the device. For more information, see the Software Installation and Upgrade Guide.
We recommend that you upgrade all software packages out of band using the console because in-band connections are lost during the upgrade process.
To download and install Junos OS Release 24.2R1:
Using a Web browser, navigate to the All Junos Platforms software download URL on the Juniper Networks webpage:
Select the name of the Junos OS platform for the software that you want to download.
Select the Software tab.
Select the release number (the number of the software version that you want to download) from the Version drop-down list to the right of the Download Software page.
In the Install Package section of the Software tab, select the software package for the release.
Log in to the Juniper Networks authentication system using the username (generally your e-mail address) and password supplied by Juniper Networks representatives.
Review and accept the End User License Agreement.
Download the software to a local host.
Copy the software to the device or to your internal software distribution site.
Install the new package on the device.