s. Proper components, including service rout- ers and routing switches, are necessary to migrate existing networks. Servicing this market completely requires an end-to-end approach that includes components, interworking, and end-to-end management. Attributes of the Multiservice Edge The multiservice edge has the following attributes: Support for traditional and emerging Layer 2 and Layer 3 services- These services include IP VPNs, broadband remote access servers, Internet access, Virtual Private LAN Services (VPLS), virtual private wire service (VPWS), ATM, Frame Relay, and security services. The multiservice edge is required to support today's revenue streams and emerging services over a cost-reduced infrastructure. High reliability-The multiservice edge must support true carrier-grade reliability at the nodal, network, and service levels to provide high service availability and support mission-critical, converged voice, video, and data traffic. A modular, flexible hardware and software architecture-The multiservice edge must have distributed input/output, and it needs a control and data plane that has the ability to independently scale switching capacity and the control plane. This is required to enable pay-as-you-grow deployment in any size POP, flexible sparing (or backup) strategies, and performance Chapter 10 Next-Generation Networks improvements. Multiservice optimized traffic management must have very granular integrated Layer 2/Layer 3 traffic management that is consistent across all media and services. This is required to enable differentiated ser- vices through service bundling and unique SLAs. Intelligent integration into the existing architecture-The multiservice edge must provide interworking with existing platforms, management sys- items, and operational support systems, and it must support current SLAs and service definitions. Service and Protocol Integration at the Intelligent Edge Multiservice edge platforms are a new category of product designed to deliver con- vergence, revenue generation, and