I have a problem:   One of our sites has a ASA5505, which created several IPSEC vpn.  Now we need to add one public IP into the ASA5505 for the people of that site to access one static IP (or to internet.)  As I am not very familar with the ASA5505, ...

One of our ASA5505 can not ping the gateway today.But when I use a notepad , using the same IPs, it can ping the gateway !!!It is so strange, the ASA5505 was working ok before until today.Is there anyting I can do to check whether the ASA is ok ?

I meant a strange problem.The toplogy is below:I have set up two IPSEC VPN ,  "106.0" to "53.0" is strange: I can't ping 172.29.53.13 from "106.0",but can ping other IPs. Meantime, 172.29.53.13 can't ping any IPs in "106.0". "21.0" to "53.0" is okHer...