Much before there was a buzz around “Software Defined”, a lot of IT experts had started sharing their perspective around the next big thing in IT. A platform which makes the IT Infrastructure of organizations simplified, responsive and adaptive!
Renato Recio, an IBM Fellow & CTO of IBM System Networking spoke about the state of Software Defined Networking in his blog. As per Recio SDN is in the early adoption phase today, but it is no longer technologies for companies that can spend significant resources in developing their own networks (e.g., Google, Microsoft). Instead smaller companies, such as Tervela and Selerity are using IBM’s SDN solutions in production environments today.
He goes on describe that one of the issues SDN has faced is the lack of a widely available, common platform that application and appliance developers can focus on.
Dr. Casimer DeCusatis also talks about the 5 reasons why software defined networking makes a difference. In his post he describes SDN as: “SDN is fundamentally distinguished from other networking technologies because it abstracts the underlying hardware complexity, separating the management and control planes from the data plane. Some consequences of this abstraction include more centralized management, perhaps through cloud middleware or NaaS such as the Quantum interface for OpenStack, with clustered controllers that achieve eventual state consistency according to Brewer’s Theorem. The SDN configuration can be derived from the global state of the network, and we can dynamically replace physical devices with their functional equivalents.”
As per him a meaningful definition of SDN should be derived from the requirements of a data center network. We don’t need to reinvent all the functions of an existing network, but if SDN allows us to perform some functions better, faster, or more efficiently, then it has tangible value. It’s even better if SDN allows us to do something innovative, something that wasn’t economically practical or technologically feasible until now.
Software Defined Networks could also apply to Hollywood movies. Al Brodie in his blog, spoke about how Moneyball applies to Cloud and Software Defined Networks. Similar to the situation in the movie, enterprises today are struggling with cloud and software defined networks. The character in the movie, Billy Beane is trying to rebuild the Oakland A’s roster, to compete and win a championship with limited financial resources, is akin to the continued struggles facing enterprise IT. Pervasive issues -- shrinking IT budgets, getting the most out of the resources you can afford -- create barriers to success, and loom as large as Art Howe’s refusal to play Scott Hatteberg at first base. Not exactly the obstacles you need when trying to uncover new ways to attract new clients, create market leadership and differentiation or accelerate delivery of new services.
If you feel there are things you may have missed in Software Defined, be sure to read the following blogs.
Kunal S Sodhi
IBM Systems and Technology Group