Configuring the General Authentication Service Processes Trace Log Filename
By default, the name of the file that records trace output for general authentication service is authd. You can specify a different name by including the file statement at the [edit system processes general-authentication-service] hierarchy level:
To configure the filename for general authentication service tracing operations:
Specify the name of the file used for the trace output.
[edit system processes general-authentication-service traceoptions]user@host# set file aap_logfile_1