The study was focused on a service provider typically serving 75,000 small, 5000 medium, and 2,000 large businesses. The unit cost of virtual CPE comes out to be 72% lower than traditional CPE.
b) Real-Time Network Self-Optimization
Self-Optimization is not possible with traditional network architecture because of many manual interventions. The study shows 27% TCO savings compared to a manual engineered network which comes lower cost per port, transport, and edge power savings. The automation reduces network engineering labor
c) Elastic Traffic Engineering
Elastic traffic engineering enables dynamic traffic optimization by having a global view of all possible paths in the network. This results in efficient utilization of capacity. In the study done, this use case realized 35% reduction in link CAPEX savings when compared with the present mode of operations.
NFV deployment challenges
Deploying NFV can be very challenging, and the crucial ones have been highlighted in ETSI* drafts: