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[QFX/PTX] pvi syntax error during Junos OS upgrade



Article ID: KB35190 KB Last Updated: 05 Dec 2019Version: 1.0

When upgrading the Junos OS to an upgraded FreeBSD version in QFX and PTX devices, the device might report a "pvi-model" syntax error and might stop the Junos OS installation.

This article gives the reason for the error and indicates what must be done to successfully perform the upgrade.


For example, upgrade from Junos OS Release 15.1X53-D67 to Junos OS Release 18.4R2-S1.4 may fail with the following error:

root@KB> request system software add /var/tmp/jinstall-host-qfx-10-m-x86-64-18.4R2-S1.4-secure-signed.tgz
Verified jinstall-host-qfx-10-m-x86-64-18.4R2-S1.4-secure-signed signed by PackageProductionEc_2019
ERROR: jinstall-qfx-10-18.4R2-S1.4-secure: product: 'pvi-model' not 'pvi:acx6360* pvi:qfx10002-60c qfx* pvi:qfx* pvi:nfx* pvi:ex46* pvi:ex* pvi:ocp* pvi:ptx10001* pvi:ptx10002-60c pvi:as7816*'


The reason for the above error message could be that Junos OS Release 15.1X53-D67 is old or not updated to grok the pvi:qfx* syntax that is available in the destination Junos OS Release.

The error message could also indicate that a step upgrade is required. For devices running Junos OS Release 15.1X53-D63.9: When the EEOL model was created, there was one EEOL release per year, so the ability to jump two EEOL releases along an upgrade path was very convenient. The release model since Junos OS release 15.1 qualifies every release as EEOL.

See Upgrade and Downgrade Support Policy for Junos OS Releases for more information.



In the above case, the recommended upgrade path to resolve the error would be to perform a step upgrade and not a direct upgrade.

For this example, the upgrade path would be: 15.1X53-D63.9 > 17.1R2-S4 > 17.4R2-S6 > 18.4R2-S1.

Alternatively, upgrading via a USB device by using install-media is an option, although this may involve the drawback of being time-consuming and requiring personnel on-site. On the upside, the install-media formats the SSD, which makes for a very clean installation.

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