MX router upgrade enquiry

‎09-05-2016 02:32 AM

I'm running Junos ver 12.1R3.5 on MX80 router. I want to upgrade it to 14.1R7. what would be the upgradation path.


12.1--> 12.3 ----> 13.3R9 or 14.1 R7.


Please confirm it if it is possible


Re: MX router upgrade enquiry

‎09-06-2016 05:39 PM

You can use your propsed upgrade path.


You could also go directly from 12.3 to 14.1 if you wanted.

Steve Puluka BSEET - Juniper Ambassador
IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP)

Re: MX router upgrade enquiry

[ Edited ]
‎10-12-2016 10:44 PM

You can upgrade from 12.1 to 12.3 first. Since 12.3 is extended end of life release, you can upgrade it directly to 14.1. Please refer to the following document :




You can find Junos upgrade/downgrade policy here : http://www.juniper.net/techpubs/en_US/junos12.3/information-products/topic-collections/release-notes...


Support for upgrades and downgrades that span more than three Junos OS releases at a time is not provided, except for releases that are designated as Extended End-of-Life (EEOL) releases. EEOL releases provide direct upgrade and downgrade paths—you can upgrade directly from one EEOL release to the next EEOL release even though EEOL releases generally occur in increments beyond three releases.

You can upgrade or downgrade to the EEOL release that occurs directly before or after the currently installed EEOL release, or to two EEOL releases before or after. For example, Junos OS Releases 10.0, 10.4, and 11.4 are EEOL releases. You can upgrade from Junos OS Release 10.0 to Release 10.4 or even from Junos OS Release 10.0 to Release 11.4. However, you cannot upgrade directly from a non-EEOL release that is more than three releases ahead or behind. For example, you cannot directly upgrade from Junos OS Release 10.3 (a non-EEOL release) to Junos OS Release 11.4 or directly downgrade from Junos OS Release 11.4 to Junos OS Release 10.3.

To upgrade or downgrade from a non-EEOL release to a release more than three releases before or after, first upgrade to the next EEOL release and then upgrade or downgrade from that EEOL release to your target release.