JUNOS Software with Enhanced Services Upgrade and Downgrade Instructions

Note: This information applies only to upgrading one release of JUNOS software with enhanced services to another. To upgrade from the JUNOS software to JUNOS software with enhanced services, see the JUNOS Software Migration Guide.

In JUNOS Release 8.5, the JUNOS software was extended to use FreeBSD version 6.1. As a result, the following requirements apply when you upgrade your router to JUNOS Release 8.5 and later:

• To upgrade with the JUNOS CLI, the minimum requirement for installation media (such as a compact flash disk, internal flash disk, or PC card) is 512 MB. To use the J-Web interface for an upgrade, you must have 512 MB or more.

• Before upgrading to JUNOS software with enhanced services, perform the following:

  • Upgrade to a 512-MB compact flash. For upgrading the DRAM module or compact flash, see the “Upgrading the DRAM Module or Compact Flash” section of the JUNOS Software Migration Guide. For information on formatting a new, blank compact flash card, see the “Configuring Internal Compact Flash Recovery” section of the JUNOS Software Administration Guide.

This section contains the following topics:

• Upgrade and Downgrade Overview
• Before You Begin
• Downloading Software Upgrades from Juniper Networks
• Installing Software Upgrades with the J-Web Interface
• Installing Software Upgrades with the CLI
• Downgrade Instructions