Why easier? Because SDNs centralize control and eliminate the need to touch hundreds of devices to effect change, the bugaboo that limits network customization today, says Karl May, CEO of Vello Systems, a maker of OpenFlow and SDN cloud switches.
Then there is the promise on the wide-area side. How would you like to increase link utilization from the 30%-40% common today to close to 100%, the level Google reports it is getting with its new SDN/OpenFlow backbone (see Q&A)?
No wonder Cisco is taking SND/OpenFlow seriously. The promise is hard to ignore.
Read more about lan and wan in Network World's LAN & WAN section.