cautious-broccoli

Juniper SRX340 notes

Recover root password

When the following prompt appears, press the Spacebar to access the router’s bootstrap loader command prompt.

Hit [Enter] to boot immediately, or space bar for command prompt.

Booting [kernel] in 9 seconds...

At the following prompt, type boot -s to start the system in single-user mode.

boot -s

At the following prompt, type recovery to start the root password recovery procedure.

“Enter full pathname of shell or ‘recovery’ for root password recovery or RETURN for /bin/sh: recovery”

recovery

Enter configuration mode in the CLI.

cli

Set the root password.

edit

set system root-authentication plain-text-password

At the following prompt, enter the new root password.

your new password

commit password to disk

commit

Exit configuration mode in the CLI.

exit

Exit operational mode in the CLI.

exit

At the prompt, type y to reboot the router.

Disable “Auto Image Upgrade” feature.

Console in and switch to cli

enter delete chassis auto-image-upgrade and commit

Factory Reset Procedure

Either press and hold the Rest Config button on the front of the chassis for 15 seconds.

Or console in to the firewall and run the following command from the cli mode and then enter configure

load factory-default

Next step, set new root password.

set system root-authentication plain-text-password

Type the new password and then commit changes and quit.

commit and-quit

This will factory reset the device, the reason you have to set a new root password is commit won’t let you commit any changes unless a password is set for root

Juniper SRX340 JunOS Installation Steps

Install new JunOS image via bootloader and USB.

Copy the tgz file to a usb drive.

Reboot the box and stop it at the bootloader, not during u-boot.

The following command will perform a clean install of the JunOS version on the device.

install file:///<image-path-on-usb>

install file:///junos-srxsme-20.2R3-S2.5.tgz

The bootloader verifies, formats and copies the JunOS image to the device in a dual-root partition configuration.

Disable SRX HA Cluster

To disable chassis cluster, enter the following command:

set chassis cluster disable reboot

To restore the chassis cluster, set the cluster-id by entering the following command:

set chassis cluster cluster-id node node-number reboot

You can also use the below CLI commands to disable chassis cluster:

set chassis cluster cluster-id 0 node 0 reboot

set chassis cluster cluster-id 0 node 1 reboot