Request system reboot command is no more available on the CLI
Model: srx1600
Junos: 23.4R1.9
root@srx1600> request system ?
Possible completions:
certificate Manage X509 certificates
commit Perform commit related operations
configuration Request operation on system configuration
convert-json-configuration Convert the given JSON configuration file as per Junos
decrypt Decrypt a $ABC456 or $ABC123 -encrypted password
download Manage downloads
firmware Upgrade or downgrade firmware
license Manage feature licenses
logout Forcibly end user's CLI login session
malware-scan Scan for malware
personality-file Execute commands related to personality of a device
process Request operation on system process
scripts Manage scripts (commit, op, event)
software Perform system software extension or upgrade
storage Request operation on system storage
yang Perform YANG schema operations
The "request system reboot" command is deprecated on SRX1600 and "request vmhost reboot" command can be used instead.
More Info:
https://www.juniper.net/documentation/us/en/software/junos/cli-reference/topics/ref/command/request-vmhost-reboot.html
root@srx1600> request system reboot
error: command is not valid on the srx1600 <<<<<<
root@srx1600> request vmhost reboot ?
<[Enter]> Execute this command
disk1 Boot off disk1(primary) device
in Number of minutes to delay before reboot operation
network Network boot via PXE
usb Boot off USB device
| Pipe through a command