SRX Command Reference Guide

1) PRE-UPGRADE PREPARATION

Essential steps to check current status and clear space before starting an upgrade.

2) USB PREPARATION & MOUNTING

Manual mounting via shell to access external storage devices.

3) INSTALL FIRMWARE FROM USB

Commands to initiate the Junos installation directly from a mounted USB drive.

4) COPY IMAGE TO INTERNAL STORAGE

Moving the firmware to the device's internal flash for a more stable installation.

5) INSTALL FROM INTERNAL STORAGE

Finalizing the software installation using the file stored in /var/tmp/.

6) POST-REBOOT VERIFICATION

Checking the system status and alarms after an upgrade to ensure stability.

7) BOOTLOADER CLEAN INSTALL

Used when the OS is corrupted; installs Junos directly from the loader prompt.

8) REPARTITION / CLEAN INSTALL

Wipes the disk partitions to ensure a fresh, clean software environment.

9) TFTP INSTALL FROM LOADER

Emergency recovery via network if local USB ports or files are unavailable.

10) MIRROR IMAGE TO SECONDARY

Copies the current running OS to the backup partition for redundancy.

11) U-BOOT / VELOADER UPGRADE

Upgrading the low-level firmware responsible for the initial boot process.

12) BACKUP CONFIG TO USB

Saves the current configuration as a rescue point and exports it to USB.

13) SRX345 INITIAL CONFIG

Standard baseline configuration for password, hostname, and SSH management.

14) SOFTWARE UPGRADE (TFTP)

Downloading and installing software via SCP/TFTP from a remote server.

15) POST-UPGRADE VERIFICATION

Comprehensive health checks for hardware, environment, and licenses.

16) COMMON ALARMS & FIXES

Resolving standard "Auto-recovery" or "Rescue config" system alarms.

17) VERIFICATION/TROUBLESHOOTING

Deep dive commands to check system processes and statistics.

18) STORAGE & PARTITIONS

Checking disk space availability and file system health.

19) BACKUP & RESTORE COMMANDS

Saving configuration to a local file and loading it back into the candidate config.

20) DEBUG & LOGS

Viewing system messages and process logs to find errors.

21) INTERFACE & ROUTING

Checking physical port status, routing tables, and security policies.

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A1) CONFIG BACKUP TO INTERNAL STORAGE (CLI)

Saves the active configuration to a specific file in the /var/tmp directory for local staging.

A2) USB MOUNTING VIA CLI (NO SHELL)

Safely mounts an inserted USB drive without needing to enter the FreeBSD shell mode.

A3) VERIFY USB CONTENTS (CLI)

Lists all files present on the mounted USB drive to ensure the correct files are present.

A4) COPY CONFIGURATION TO USB

Moves the saved configuration file from internal storage to the external USB drive.

A5) COPY CONFIGURATION FROM USB

Retrieves a backup configuration from the USB drive and places it in the local staging area.

A6) ENTER CONFIGURATION MODE (EXPLICIT)

Enters the mode where system settings and parameters can be modified.

A7) REVIEW CONFIGURATION CHANGES BEFORE COMMIT

Shows the difference between the running configuration and your new changes to prevent errors.

A8) CLI-ONLY BACKUP & RESTORE WORKFLOW

A complete, safe sequence of commands to backup or restore settings without using shell access.

A9) ADMIN-PC OFFLINE BACKUP STEP

External process: Move the USB to a PC and archive the .conf file for disaster recovery.

(Manual Process: No SRX commands required)

A10) VERIFICATION ENHANCEMENTS ADDED

Displays granular details about storage usage and active system filesystems.

A11) POST-RESTORE PERSISTENCE CHECK

Ensures that the newly restored configuration is saved as the system's official rescue point.

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22) END OF DOCUMENT