The Avaya Virtual Services Platform 4000 Series (VSP 4000) are products that, in computer networking terms, are standalone Switch/Routers (Layer 2/Layer 3) designed and manufactured by Avaya for Ethernet-based networks. The VSP 4000 hardware is a derivative of the earlier Ethernet Routing Switch 4000 Series, leveraging certain shared components, but implementing a new, completely different, operating system derived from the Virtual Service Platform 9000 Series. The role of the VSP 4000 is to extend Fabric-based network virtualization services to smaller, remote locations, thereby creating a single service delivery network.