Juniper Networks J2350 manual Recovering Primary Boot Devices

JUNOS Software with Enhanced Services Hardware Guide

Reboot the system? [y/n] y

Recovering Primary Boot Devices

All Services Routers use a compact flash to store JUNOS Enhanced Services, router configuration files, and log files. The internal compact flash is not hot-swappable and is accessible only after you remove the cover on the back panel of the router chassis. In addition to the internal compact flash, J2320 and J2350 Services Routers have a slot in the front of the chassis for external flash media. All Services Routers also support externally pluggable USB storage devices. If the primary storage medium becomes corrupted and no secondary medium is in place, you can reload the JUNOS recovery software package onto the corrupted compact flash card with a desktop or laptop computer running either a UNIX, Microsoft Windows 2000, or Windows XP operating system.

This section contains the following topics:

■Why Compact Flash Recovery Might Be Necessary on page 164

■Recommended Recovery Hardware and Software on page 164

■Configuring Internal Compact Flash Recovery on page 165

Why Compact Flash Recovery Might Be Necessary

For media redundancy, we recommend that you keep a secondary storage medium attached and updated at all times. Use the request system snapshot command to perform the update. (For instructions, see the JUNOS Software Administration Guide.)

If the internal compact flash fails at startup, the Services Router automatically boots itself from the external compact flash or USB storage device. When a redundant storage medium is not available, the router is unable to boot and does not come back online. This situation can occur if the power fails during a JUNOS Enhanced Services upgrade and the physical or logical storage media on the router are corrupted.

If the primary storage medium becomes corrupted and no secondary medium is in place, you can reload the JUNOS Enhanced Services image onto the corrupted compact flash with a desktop or laptop computer running either a UNIX, Microsoft Windows 2000, or Windows XP operating system.

CAUTION: This procedure does not recover any router configuration files. After you reinstall JUNOS Enhanced Services, all the information on the original internal compact flash is lost.

Recommended Recovery Hardware and Software

Before configuring compact flash recovery, assemble the equipment and software listed in Table 48 on page 165.

164■ Recovering Primary Boot Devices