Scalable Network Slicing over SR Networks

Multiple network slices can be realized on top of a single shared network. A router that requires forwarding of a packet that belongs to a network slice may have to decide on the forwarding action to take based on selected next-hop(s), and the forwarding treatment (e.g. scheduling and drop policy) to enforce based on the slice aggregate per-hop behavior. Segment Routing is a technology that enables the steering of packets in a network by encoding pre- established segments within the network into the packet header. This document introduces mechanisms to enable forwarding of packets over a specific network slice along a Segment Routing (SR) path.