Upgrade to Release 8.5

When upgrading or downgrading the JUNOS software, always use the jinstall package. Use other packages (such as the jbundle package) only when so instructed by a Juniper Networks support representative. For information about the contents of the jinstall package and details of the installation process, see the JUNOS System Basics Configuration Guide.

Note: Before upgrading, back up the file system and the currently active JUNOS configuration so that you can recover to a known, stable environment in case the upgrade is unsuccessful. Issue the following command: user@host> request system snapshot The installation process rebuilds the file system and completely reinstalls the JUNOS software. Configuration information from the previous software installation is retained, but the contents of log files might be erased. Stored files on the routing platform, such as configuration templates and shell scripts (the only exceptions are the juniper.conf and ssh files) may be removed. To preserve the stored files, copy them to another system before upgrading or downgrading the routing platform. For more information, see the JUNOS System Basics Configuration Guide.

The download and installation process for JUNOS Release 8.5R4 is the same as for previous JUNOS releases.

If you are not familiar with the download and installation process, follow these steps:

1. Using a Web browser, follow the links to the download URL on the Juniper Networks Web page. Choose either Canada and U.S. Version or Worldwide Version:
   • https://www.juniper.net/support/csc/swdist-domestic/ (customers in the United States and Canada)
   • https://www.juniper.net/support/csc/swdist-ww/ (all other customers)
2. Log in to the Juniper Networks authentication system using the username (generally your e-mail address) and password supplied by Juniper Networks representatives.
3. Download the software to a local host.
4. Copy the software to the routing platform or to your internal software distribution site.
5. Install the new jinstall package on the routing platform.

   Note: We recommend that you upgrade all software packages out-of-band using the console because in-band connections are lost during the upgrade process.

   Customers in the United States and Canada use the following command:

   user@host> request system software add validate reboot source/jinstall-8.5R4.3-domestic-signed.tgz

   All other customers use the following command:

   user@host> request system software add validate reboot source/jinstall-8.5R4.3-export-signed.tgz

   Replace source with one of the following values:

   • /pathname—For a software package that is installed from a local directory on the router.

   • For software packages that are downloaded and installed from a remote location:

     • ftp://hostname/pathname
     • http://hostname/pathname
     • scp://hostname/pathname (available only for Canada and U.S. version)

   The validate option validates the software package against the current configuration as a prerequisite to adding the software package to ensure that the router reboots successfully. This is the default behavior when the software package being added is a different release.

   Adding the reboot command reboots the router after the upgrade is validated and installed. When the reboot is complete, the router displays the login prompt. The loading process can take 5 to 10 minutes.

   Rebooting occurs only if the upgrade is successful.

Note: After you install a JUNOS 8.5 jinstall package, you cannot issue the request system software rollback command to return to the previously installed software. Instead you must issue the request system software add validate command and specify the jinstall package that corresponds to the previously installed software.