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 with Enhanced Services 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 256 MB. To use the J-Web interface for an upgrade, you must have 512 MB or more.

• For J-series Services Routers with a 256-MB compact flash:

  • You must perform the upgrade with the CLI. Do not use the J-Web interface for the upgrade.
  • Before upgrading, see the important information in Special Instructions for J-series Routers with a 256-MB Compact Flash.
  • To upgrade without copying the software image to the router—as we recommend—you need at least 68 MB of available space on the compact flash. To copy the software image to the router and upgrade using that image, you need at least 130 MB of available space on the compact flash.

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
• Special Instructions for J-series Routers with a 256-MB Compact Flash
• Cleaning Up Files
• Verifying Available Compact Flash Space
• Removing the Swap Partition