The Cisco^® ASR 9000 Series Aggregation Services Routers (ASR 9000 Series) represent an exciting new paradigm in edge and core routing, with exceptional scalability, carrier-class reliability, environmentally conscious design, incredible flexibility, and an attractive price-to-performance benchmark. The Cisco ASR 9000 Series has a wide product portfolio, ranging from the Cisco ASR 9001 (2 Rack Units [2RU]) to the Cisco ASR 9922 (44RU), with each system designed to provide true carrier-class reliability using the Cisco IOS^® XR operating system, comprehensive system redundancy, and a full complement of network resiliency schemes. Finally, the Cisco ASR 9000 Series is designed to simplify and enhance the operational and deployment aspects of service-delivery networks.