Router Virtualization in Service Providers
Several factors are contributing to a growing need for virtualization in the Point Of Presence (POP) and data center: a desire to reduce capital costs by buying fewer chassis, a desire to reduce operational costs by deploying fewer chassis and simplifying topologies, and a strong push to decrease the environmental impact by using less power. These goals must coincide with existing requirements of stability, resiliency, and service isolation. This paper discusses how the needs of POP deployments compare and contrast with those of the data center and which virtualization architectures are available to address those needs. It then covers the architectural benefits of virtualization in Cisco IOS XR Software that contribute to these goals.