The Cisco ASR 1000 Series Embedded Service Processors (ESPs) are based on the innovative, industry-leading Cisco QuantumFlow Processor for next-generation forwarding and queuing in silicon. These modules use the first generation of the hardware and software architecture known as Cisco QuantumFlow Processor.The Cisco ASR 1000 Series ESPs are responsible for the data-plane processing tasks, and all network traffic flows through them. The modules perform all baseline packet routing operations, including MAC classification, Layer 2 and Layer 3 forwarding, quality-of-service (QoS) classification, policing and shaping, security access control lists (ACLs), VPNs, load balancing, and NetFlow.The Cisco ASR 1000 Series 20-Gbps Embedded Services Processor (ESP) is based on the innovative Cisco QuantumFlow Processor for next-generation forwarding and queuing in silicon. The Cisco ASR 1000 Series ESP is responsible for data-plane processing tasks, and all network traffic flows through them, enhancing a range of advanced services from service provider broadband and edge services to enterprise-level WAN aggregation and IP gateway services.