We terminated about 25 site-to-site VPN tunnels on the Cisco ASA 5540 (2 GB RAM). It appears that the memory utilization is getting higher when adding the tunnel. We are planing to remove those 25 VPN tunnels out 5540, and soon we will add additional 40 VPN tunnels on it. So it will be totall around 65 tunnels, and maybe add couple tunnels per year for the future grow, but about 25 VPN tunnels are using at all the time, the others are just backup purpose, standby only. We are looking for the new network device (router or ASA) to accomadate the needs. Can anyone recommend which network device is better to handle VPN tunnel for this infrastructure? Please provide more details as possible. Your help is greatly appreciated.