JTAC recommended versions of Junos software are listed to assist with determining which version of software to download and install.
This article applies to the following devices:
M, T and MX Series
MAG Series Chassis Management Module MAG-CM060
For other Junos devices, refer to the Release Notes and the Alerts column on the Download Software pages.
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Problem or Goal:
For customers planning an upgrade or initial installation, JTAC recommends that customers consider the following Junos software versions. These versions are selected using input from Juniper Engineering, customers, and analysis of field usage data.
Exceptions to this include:
JTAC has specifically recommended that customers use a version of Junos software that is different from what is listed.
You require specific features that are only available in another version of Junos software. In this case, please be sure to download the latest maintenance release.
Your currently installed version of Junos is working well.
1. It is highly recommended to refer to the Release Notes, Technical Documentation, and KB articles for any outstanding and resolved issues in Junos 12.3R3 or 12.2R5 before making the upgrade decision. Contact JTAC if there are any queries.
Notes: 1. Junos 12.3R3 and 12.3R4 are not recommended to be deployed on MX5, MX10, MX40, MX80 and all MX-3D FPC. Please see PR896592 or contact JTAC for additional information. 2. For T4000, JTAC currently does not recommend a Junos version older than Junos 12.1R5.5.