Please refer to Juniper knowledge base article
http://kb.juniper.net/InfoCenter/index?page=content&id=KB9221


[ScreenOS] How to Troubleshoot a VPN Tunnel that won't come up
 [KB9221] KB Properties
   
Categories:     
    OS
    Firewalls ISG/NS/SSG Series
    IPSec
    ScreenOS
   
Knowledge Base ID:     KB9221
Last Updated:     02 Jan 2013    
Version:     14.0