vpn problem ( ping )

[israa_nema]

I have a site to site network and use in each site PIX 515 and all the commands are correct because sometimes the connection comes up for few minites and down for weeks . actually I use clear isakm sa and clear ipsec sa but in vain there is no connection and I can't ping the site , please I need your help

[malikasim]

We need following when you try to make a connection

- debug cry isakmp 255

- debug cry ipsec 255

[israa_nema]

thanks to your reply but I would like to know why that happens and how I can resolve this problem if it happens again

[israa_nema]

thanks to your reply but I would like to know why that happens and how I can resolve this problem if it happens again