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Symmetric-based SDN is popular since it enables tighter control over the virtual network. This is crucial as organizations ranging from large-scale corporations to small businesses rely on analytics to establish their business models and require better control over the data flowing through their networks.
"SDN is considered best suited for data centers as conventional networks that depend on different tiers of Ethernet switches are unable to satisfy the computing, storage and flexibility needs of huge storage data centers," said
The most important driver for SDN adoption is cost effectiveness. It allows customers to use their network assets with greater efficiency and fully utilize existing infrastructure through advanced virtualization capabilities.
In several cases, however, incompatibility with existing infrastructure curbs SDN deployment. Accountability concerns, the dominance of physical components, and the use of questionable software components add to the challenge. While SDN empowers users to build their own appliances, such as firewalls over the network, it also provides hackers with extra points of entry, making the underlying hardware more prone to malicious attacks.
"The potential of SDN can be realized only when research organizations form consortiums and consolidate knowledge to develop various aspects of this nascent technology," advised Vendhan. "For now, SDN urgently requires a strong set of standards and protocols that can guide its evolution, which is possible only through strategic relationships, partnerships and joint ventures among organizations, vendors and developers."
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