We have ASA 5505 installed for our office and one Internet 2MBPS lease line for Internel and have 16 public IP's. One of the Public IP is assigned to ASA outside Interface and other are using by NAT. We have 10 branches connected via STS VPN Tunnel. Now we are going to have the second lease link for backup purpose and want to use both lines simultaneously. Is it possible by ASA 5505 or do i need to buy an extra device for that. Pls advice.