You have been hired by a small company that has set up a VPN. The VPN is used by two business partners with which the company needs to communicate on a regular basis. You set up a simple mesh configuration, going from office to office to do the initial configuration, which includes SA table listings for all devices in the VPN. The VPN operates smoothly until your company purchases another business that has branch offices located overseas. You are given the assignment of expanding the VPN to include the new employees. You are told that all internal LANs should be able to communicate with one another and are told in confidence that more acquisitions may be in store. You are happy about the prospect of traveling overseas to extend the VPN, but the prospect of updating four or more VPN devices around the world on a regular basis seems impractical. 

What should you do to help the VPN grow?