Robuta

https://www.juniper.net/documentation/us/en/software/junos/cli-reference/topics/ref/statement/radius-disconnect-edit-dhcp-local-server-reconfigure.html
Configure all DHCP clients or only the DHCP clients serviced by the specified group of interfaces to be reconfigured when a RADIUS-initiated disconnect is...
junos osjuniper networksradiusdisconnectdhcp
https://www.juniper.net/documentation/us/en/software/junos/cli-reference/topics/ref/command/test-access-radius-server-command.html
Verify RADIUS server authentication parameters.
radius serverjunos osjuniper networkstestaccess