Original Cisco ASR1000-ESP20 ASR 1000 Embedded Services Processor  The Cisco ASR 1000 Series Embedded Services Processors (ESPs) handle all the network data-plane traffic‑processing tasks of Cisco ASR 1000 Series Aggregation Services Routers. These ESPs allow the activation of concurrent enhanced network services, such as cryptography, firewall, Network Address Translation (NAT), quality of service (QoS), NetFlow, and many others while maintaining line speeds. Cisco ASR 1000 Series Routers are placed at the WAN edge of your enterprise data center or large office, as well as in service provider points of presence (POPs). The routers rely on the power of the ESPs to aggregate multiple traffic flows and network services, including encryption and traffic management, and forward them across WAN connections at line speeds. With router options that run from 2.5 to 200 Gbps, the Cisco ASR Family contains many models and licensing options to meet the speed and budget requirements of different types of organizations and various-sized locations.