This article explains the meaning of the below log message seen on the console when the device is rebooting following up with NMI panic message.
Enter full pathname of shell or RETURN for /bin/sh: ^@^@^@^@NMI ISA 30, EISA ffpanic: NMI
The device rebooted unexpectedly due to a power outage and when the device was booting up, the below logs were seen.
Enter full pathname of shell or RETURN for /bin/sh: ^@^@^@^@NMI ISA 30, EISA ffpanic: NMIcpuid = 1Uptime: 33m1sAutomatic reboot in 15 seconds - press a key on the console to abortRebooting...cpu_reset: Restarting BSPcpu_reset: Failed to restart BSPThe device gets stuck in the boot-loop rendering the device unreachable.
In some unexpected power outage events, JUNOS FreeBSD file system may become corrupted and the switch will fail to boot. We have to hard reboot the box to get into recovery mode (recovery image) to recover the device.
Please follow the below KBs for recovering the device.
QFX10K Junos Recovery installation - https://supportportal.juniper.net/s/article/EX-QFX-Recovery-installation-for-QFX10K-and-EX4300-MP?language=en_US
Alternatively, you can proceed with format-install on the device using USB device.
KB for format install - https://supportportal.juniper.net/s/article/QFX10K-Procedure-to-format-install-QFX10002-72Q-device-using-a-USB?language=en_US
2023-09-20 - Initial Publication2024-07-29 - Visibility modified