The Cisco Carrier Routing System (CRS) provides outstanding economical scale, IP and optical network convergence, and a proven architecture. The Cisco CRS continues to evolve with the needs of the network, becoming more elastic and programmable. As part of an evolving and programmable network, the Cisco CRS delivers highly reliable operations and scales easily from a single-chassis to a massive multichassis system. The Cisco CRS design offers industry-leading efficiency in power consumption, cooling, and rack-space resources, while providing intelligent service-rich bandwidth capacity.
Cisco CRS forwarding processor cards provide distributed forwarding-engine capabilities and scalability, which are important for supporting the Internet of Everything. The Cisco CRS forwarding engine is responsible for data-plane processing tasks and handling all network traffic flows through the system. The forwarding processor card performs all baseline packet-routing operations, including Layer 3 forwarding, quality-of-service (QoS) classification, policing and shaping, security access control lists (ACLs), VPNs, load balancing, and Cisco NetFlow. Performance highlights of the forwarding processor cards include hardware-assisted policing and jitter- and latency-reducing multicast packet replication.