As VPNs become mainstream for WAN connectivity, the demands on network security devices for high performance, feature richness, and investment protection have increased dramatically. The Cisco 7200 Series Security Router bundles provide best-in-class VPN and security services by combining the strength of Cisco 7200 Series features and the Cisco VPN Acceleration Module 2 (VAM2) with Cisco IOS Software network services. To better address requirements specific to the evolving VPN market, the Cisco 7200 Series provides an extensible platform, with modular processor and I/O subsystems, that allows for simple upgrades in VPN performance and system scalability as demands change. Additional expansion capabilities, such as increased density of LAN/WAN interfaces and integration with Multiprotocol Label Switching (MPLS) for service provider deployments, make the Cisco 7200 Series Security Router bundles an excellent choice for high-throughput VPN systems.VPNs are an alternative WAN infrastructure. They replace or augment existing private networks using leased lines, Frame Relay, or ATM to connect remote and branch offices and central sites more cost-effectively and with increased flexibility. Interconnecting multiple sites meets specific requirements such as accommodating diverse traffic types, ensuring ubiquitous access and reliability of all devices in the network, providing a framework for managing numerous geographically dispersed devices, and ensuring scalability at the VPN aggregation hub site. Many VPN devices on the market today focus on remote-access VPN applications and do not accommodate these specific site-to-site VPN requirements.