To avoid upgrading failure due to freebsd version difference from target Junos release, "no-validate" option selected .

This will bypass configuration validation, if there is configuration is not compatible with the target release, will result as partial configuration activated after upgrading reboot.

Creating initial configuration: ...

<output>

[edit services flow-monitoring version-ipfix template mpls tunnel-observation]

 'ipv4'

  Tunnel observation must be set to ipv4 only for mpls template

[edit services flow-monitoring version-ipfix template mpls tunnel-observation]

 'ipv6'

  Tunnel observation must be set to ipv6 only for mpls template

[edit services flow-monitoring version-ipfix template mpls]

 'tunnel-observation'

  Tunnel observation must be configured only for ipv4,mpls and mpls-ipvx templates

</output>

mgd: error: commit failed: (statements constraint check failed)

Warning: Failed to commit active configuration.

Warning: Trying to commit recovery mode configuration.

mgd: error: Unable to find the rescue configuration file: /config/rescue.conf

Warning: Commit failed, activating partial configuration.

Warning: Edit the router configuration to fix these errors.

lab@router# show services flow-monitoring

flow-monitoring {

  version-ipfix {

    template mpls {

      nexthop-learning {

        enable;

      }

      template-refresh-rate {

        seconds 600;

      }

      mpls-ipv4-template; <<<<<<<<<<<<<<< replace mpls-ipv4-template with mpls-template

      ##

      ## Warning: Tunnel observation must be configured only for ipv4,mpls and mpls-ipvx templates

      ##

      tunnel-observation {

        ##

        ## Warning: Tunnel observation must be set to ipv4 only for mpls template

        ##

        ipv4;

        ##

        ## Warning: Tunnel observation must be set to ipv6 only for mpls template

        ##

        ipv6;

      }

    }

Configuration modified as:

lab@router# show services

flow-monitoring {

  version-ipfix {

    template ipv4 {

      nexthop-learning {

        enable;

      }

      template-refresh-rate {

        seconds 600;

      }

      ipv4-template;

    }

    template mpls {

      nexthop-learning {

        enable;

      }

      template-refresh-rate {

        seconds 600;

      }

      mpls-template;

      tunnel-observation {

        ipv4;

        ipv6;

      }

    }

Then commit.