Release 12.4(15)T, the sixth release of the 12.4T family, streamlines the Cisco IOS Software upgrade process, provides sub-second link failure detection and faster convergence, delivers next-generation Layer 2-7 flexible packet classification, enhances intrusion protection and SSL VPN capabilities, and provides support for the new Cisco 7201 Router, amongst other features. Like all releases in the 12.4T family, Release 12.4(15)T integrates innovations that span multiple technology areas, including Cisco IOS Security, Voice, Cisco IOS Infrastructure, Access, High Availability, Management Instrumentation, Quality of Service, IP Multicast, Broadband, IP Routing, and IP Services. Release 12.4(15)T delivers these integrated technologies on the broadest range of hardware in the industry, including the Cisco Integrated Services Routers, Cisco 7200 Series, and Cisco 7301 Router.