Segment Routing is the latest technology that replaces MPLS and is based on source routing. Segment Routing provides complete control over the forwarding path from the source node by encoding the path in the header of the packet. Segment Routing is implemented using extensions to the native IGP routing protocols, it does not require any additional protocols and removes unnecessary protocols simplifying the network. Segment Routing runs natively on an MPLS or IPv6 data plane and can coexist with LDP, making for a painless migration. A special thank you to Clarence Filsfils and Kris Michielsen from Cisco Systems for providing the original content for the slides.

Cisco's Crosswork Network Controller or CNC is a Segment Routing SDN Traffic Engineering Controller for transport networks. CNC can create engineered Transport paths using SR-TE parameters and provision and link these paths to VPN services. CNC performs real-time network optimization based on current network conditions utilizing the Crosswork Optimization Engine.