configure site-to-site VPN between TZ180 / TZ 105W and NetScreen concentrator

configure site-to-site VPN between TZ180 / TZ 105configure site-to-site VPN between TZ180 / TZ 105W and NetScreen concentratorW and NetScreen concentrator

configure site-to-site VPN between TZ180 / TZ 105W and NetScreen concentrator
this is a drama
after a client site changed their internet connection to another ISP
the result is the Site-to-site VPN is broken between TZ180 and a NetScreen
the error is remote party time-out ....
I changed lots of settings on the sonicwall side, no luck.
the netscreen guy on the other side said noothing to change at their end... phew ... their configure file is so simple
at some stage , tz180 does show the tunnel is up, but I can't ping the other side, weird ....
long story short ...
the client eventually decided to get a new TZ105
I program the TZ105 like the TZ180....
if the shared secret not typed correctly or a protocol mismatch, you can also get pair-time-out errors in the log
once get the shared secret right, booom.... the VPN is up and running.
btw, for those shared secrets, you better manually type those in...