AutoUpdate

https://www.juniper.net/documentation/en_US/junos/topics/example/services-application-identifications-application-package-automatically-updating-cli.html

me@SRX300#set services application-identification download automatic interval 24 start-time 08-02.12:36

me@SRX300#commit and quit

jlk@srx320> show services application-identification status   

Application Identification
Status                            Enabled
Sessions under app detection      0
Engine Version                    4.18.2-97.005 (build date Sep  8 2017)
Max TCP session packet memory     0
Force packet plugin               Disabled
Force stream plugin               Disabled
Statistics collection interval    1 (in minutes)

Application System Cache
Status                            Enabled
Max Number of entries in cache    131072
Cache timeout                     3600 (in seconds)

Protocol Bundle
Download Server                   https://signatures.juniper.net/cgi-bin/index.cgi
AutoUpdate                        Enabled
Interval                          12 (in hours)