I have established a site-to-site tunnel between our two office bldg's, but I'm unable to ping between the two. Both IPSec and IKE negotiate and show active connections, but if I check the IPSec tunnels in the VPN status monitor, there are no decapsulated packets. There are plenty of encapsulated packets (21296), but 0 decapsulated....packets along with 155 Send Error Packets. The hardware used is a 2811 Integrated services router and an ASA 5505. Any ideas as to why this connection would be performing this way?