After performing a commit, the QFX5120-48Y switches crashed. Applied the commit several times, and each time the switch crashed approximately 30 seconds afterward. Following the crash, the switch entered a boot loop.

The only way to recover and boot the switch was to unplug and replug the power cable.

QFX5120-48Y crashing after commit.

{master:0}[edit]

user@Switch> show version | match :

localre:

Hostname: Switch

Model: qfx5120-48y-8c

Family: junos-qfx

Junos: 24.4R2.23

user@Switch> show system core-dumps no-forwarding

/var/tmp/*core*: No such file or directory
Host Crash Info:
--------------------------------------------------------------------------
-rw-------  1 root  root    95281469 <timestamp> /var/crash/vmcore
-rw-------  1 root  root    93965912 <timestamp> /var/crash/vmcore
-rw-------  1 root  root    98436894 <timestamp> /var/crash/vmcore
-rw-------  1 root  root    90909838 <timestamp> /var/crash/vmcore

The BIOS version is v25.

user@Switch> show chassis firmware no-forwarding

Part                     Type       Version
FPC 0                    U-Boot      ***
                         loader     FreeBSD/i386 bootstrap loader 1.2
                         BIOS       CBDE_P_LIG1_00.25.01
                         TMC FPGA   7.2.0
                         Optics CPLD 0.1.4
                         RE FPGA    0.3.3
                         Power CPLD 2.0

Issue was resolved after upgrading the BIOS from v25 to v29.

Please contact JTAC to get the necessary steps to upgrade the BIOS version.