I have just finished configuring two sites over GRE tunnels. Configurations of the two sites are attached as well... My problem is that both the sites are accessing each other upto routing interface only... When I attach any machine on remote site and give the IP of pool 192.168.x.x... it never reaches there (ping timeout)... same is the case with the remote site... Remote site is accessing me on the pool 172.16.2.x but results in ping failure.. All the necessary routes are there.. gre tunnels is up.. I can ping GRE tunnel IPs as well but the problem persist.. Any help please.