Switch has a hardware fault where it logs out immediately after successfully logging in as follows. Sat Jun 4 05:46:40 UTC 2022 FreeBSD/arm (Amnesiac) (ttyu0) login: root --- JUNOS 20.4R3-S3.4 Kernel 32-bit JNPR-11.0-20220228.d118be0_buil root@:RE:0% Auto Image Upgrade: DHCP INET Client Bound interfaces : Auto Image Upgrade: DHCP INET Client Unbound interfaces : irb.0 vme.0 Auto Image Upgrade: DHCP INET6 Client Bound interfaces : Auto Image Upgrade: DHCP INET6 Client Unbound interfaces : irb.0 Auto Image Upgrade: To stop, on CLI apply "delete chassis auto-image-upgrade" and commit Auto Image Upgrade: No client in bound state, triggered phone-home ZTP Auto Image Upgrade: Phone-home ZTP failed, reset all enabled DHCP clients Auto Image Upgrade: DHCP INET Client State Reset : irb.0 vme.0 Auto Image Upgrade: DHCP INET6 Client State Reset : irb.0 root@:RE:0% cli {master:0} root> configure Entering configuration mode {master:0}[edit] root# delete chassis auto-image-upgrade {master:0}[edit] root# set system root-authentication plain-text-password New password: Retype new password: {master:0}[edit] root# commit configuration check succeeds commit complete {master:0}[edit] root# set system ports console log-out-on-disconnect {master:0}[edit] root# commit configuration check succeeds commit complete {master:0}[edit] root# (THIS IS WHERE ROOT GETS LOGGED OUT AUTOMATICALLY... ON DISCONNECT?) FreeBSD/arm (Amnesiac) (ttyu0) login: root Password: baddBoxx (CURRENTLY CONFIGURED ROOT PASSWORD) Last login: Sat Jun 4 05:48:57 on ttyu0 --- JUNOS 20.4R3-S3.4 Kernel 32-bit JNPR-11.0-20220228.d118be0_buil root@:RE:0% FreeBSD/arm (Amnesiac) (ttyu0) login: root Password: baddBoxx Last login: Sat Jun 4 05:48:57 on ttyu0 --- JUNOS 20.4R3-S3.4 Kernel 32-bit JNPR-11.0-20220228.d118be0_buil root@:RE:0% FreeBSD/arm (Amnesiac) (ttyu0) login: This seems like a hardware failure where it sees a console disconnect and logs out even though console is clearly not disconnected, as shown by continued console output. This is a repeatable failure. You can try it when it gets to the depot.