Critical high-bandwidth business applications have driven the need for ubiquitous connectivity and increased bandwidth for large main offices. Many enterprises are augmenting or replacing their traditional WANs with site-to-site virtual private networks (VPN) to better accommodate these new connectivity requirements.The Cisco IPSec VPN Services Module delivers cost-effective VPN performance for head-end locations on the Cisco Catalyst 6500 Series and the Cisco 7600 Series Internet Routers.