How can you Proactively plan for change … before there is a need to change?CEO’s are more uncertain than ever about future of market conditions, they crave the ability to make their overall business more agile in responding to market conditions. CIO’s align to CEO priority with cloud infrastructures initiatives to unleash agility in IT resources. The network is blocking the CIO’s cloud vision today because of its manual nature. The primary protocol for configuring the network is still a human interface called the “work ticket.” SDN makes cloud networks possible.
Network has hindered full cloud/virtualization adoption because… Network services are bound to physical network hardware and topologyBogged down with an old model designed for manual provisioning on a device-by-device basisHundreds of individual network devices tied together with no programmatic interface for network-wide controlProblem this is causing…“Thanks to virtualization, a new server can be fired up in a matter of hours, but the networking aspect still takes two weeks.” – Computer Weekly“Application access/delivery is dependent on underlying network which will need to become more dynamic/flexible with SDN” - IDCToday,complex manual reconfiguration of network hardware is needed to extend the network in cloud environments. While provisioning a VM may take only 2 min, provisioning the associated network and networking services can add days or even weeks to the process. Furthermore, cloud computing benefits from applications’ ability to move all around a datacenter (or even across datacenters). However, physical network topology limits workload mobility within the scope of a top-of-the-rack switch and a handful of servers. While compute and storage can be quickly provisioned – the network is the last thing we can't currently rapidly deploy.
Centralize management extract services that were formerly on network devices but would now run on a common platform as virtual machines, leverage a centralized controller enabling a new broad range of network capabilitiessimplify the network device.