As with server virtualization before it, network virtualization is a transformative architecture f that overcomes previous limitations to deliver unprecedented performance, flexibility and economics.
In contrast to “software-defined networking,” in which hardware remains the driving force, our technology truly decouples network resources from underlying hardware. Virtualization principles are applied to physical network infrastructure, abstracting network services to create a flexible pool of transport capacity that can be allocated, utilized and repurposed on demand.
In a close analogy to the virtual machine, a virtual network is a software container that presents logical network components—logical switches, routers, firewalls, load balancers, VPNs and more—to connected workloads. These virtual networks are programmatically created, provisioned and managed, with the underlying physical network serving as a simple packet-forwarding backplane. Network and security services are allocated to each VM according to its needs, and stay attached to it as the VM moves among hosts in the dynamic virtualized environment.