3. Is SDN the Same as Network Function Virtualization?
No. SDN is all about redesigning data center networks. Network function virtualization is about moving middleware, such as firewalls, network address translation and load balancers, into your virtualization environment without using traditional specialized hardware. Virtualizing middleware functions can be easier in a data center that has SDN.
4. How Can Government Networks Benefit from SDN?
The most advanced SDN products are designed for data centers. When an application doesn’t have only three tiers, but dozens of moving parts that must be tightly and securely connected, SDN can create optimized paths and security separations that are hard to build manually using traditional virtual LANs, dynamic routing and switching.
5. Can I Use SDN in My WAN?
SDN products for branch office WANs are different. Software-defined WAN can build more reliable and cost-effective networks on top of different WAN technologies — and make routing decisions based on applications, user load, congestion, link cost and more. This isn’t the same SDN found in a data center, but a shared objective applies: increasing intelligence of the control plane.