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Software Defined Networking | Part 5 By @MJannery | @CloudExpo [#SDN #Cloud]

Now, Never, Don’t Know? A 10-Part Series (part 5)

In part 4 of our series on SDN, I discussed some of SDN's most commonly asserted benefits. Here I'll look at the drawbacks, the majority of which are organizational or financial and not technical.  The most commonly cited reasons for actively not deploying SDN are:

Staffing

SDN requires significant staff re-training or recruitment.  There are very few staff with proven SDN deployment / management skills making recruitment difficult and therefore re-training of existing staff is necessary.  Of course having retrained those staff, their retention with their new, highly desirable, scarce skills might prove problematic too!

Reorganization

To use SDN effectively there needs to be a sharing of knowledge between business requirements, applications, servers and networking teams.  This might take the form of cross-discipline teams, or individuals with broad cross-discipline understanding.  Without this, mapping services to application requirements and ultimately network requirements cannot occur effectively.  This type of breakdown or merging of traditional ‘silos' is already occurring - e.g., with the emergence of DevOps - albeit slowly!

Cost

Whilst proponents of SDN cite the real cost benefits of running a more highly utilized network and the less quantifiable benefits of a more agile network with more rapid application and service deployment, re-scaling, etc. they often fail to factor in the costs of retraining, reorganization, new hardware and software licenses and the hidden costs of loss of business continuity during initial deployment.

Security

Whilst tighter, more dynamic security enforcement is recognized as an advantage of SDN, it is also a new, rapidly evolving technology with new protocols and new weaknesses and vulnerabilities.  Such a lack of maturity and the possibilities for compromising the network control layers make SDN an appealing target for hackers, industrial espionage, etc.

In part 6, we'll take a look at obstacles to deployment.

More Stories By Michael Jannery

Michael Jannery is CEO of Entuity. He is responsible for setting the overall corporate strategy, vision, and direction for the company. He brings more than 30 years of experience to Entuity with 25 years in executive management.

Prior to Entuity, he was Vice President of Marketing for Proficiency, where he established the company as the thought, technology, and market leader in a new product lifecycle management (PLM) sub-market. Earlier, Michael held VP of Marketing positions at Gradient Technologies, where he established them as a market leader in the Internet security sector, and Cayenne Software, a leader in the software and database modeling market. He began his career in engineering.

CloudEXPO Stories
DXWorldEXPO LLC announced today that Kevin Jackson joined the faculty of CloudEXPO's "10-Year Anniversary Event" which will take place on November 11-13, 2018 in New York City. Kevin L. Jackson is a globally recognized cloud computing expert and Founder/Author of the award winning "Cloud Musings" blog. Mr. Jackson has also been recognized as a "Top 100 Cybersecurity Influencer and Brand" by Onalytica (2015), a Huffington Post "Top 100 Cloud Computing Experts on Twitter" (2013) and a "Top 50 Cloud Computing Blogger for IT Integrators" by CRN (2015). Mr. Jackson's professional career includes service in the US Navy Space Systems Command, Vice President J.P. Morgan Chase, Worldwide Sales Executive for IBM and NJVC Vice President, Cloud Services. He is currently part of a team responsible for onboarding mission applications to the US Intelligence Community cloud computing environment (IC ...
Sanjeev Sharma Joins November 11-13, 2018 @DevOpsSummit at @CloudEXPO New York Faculty. Sanjeev Sharma is an internationally known DevOps and Cloud Transformation thought leader, technology executive, and author. Sanjeev's industry experience includes tenures as CTO, Technical Sales leader, and Cloud Architect leader. As an IBM Distinguished Engineer, Sanjeev is recognized at the highest levels of IBM's core of technical leaders.
For years the world's most security-focused and distributed organizations - banks, military/defense agencies, global enterprises - have sought to adopt cloud technologies that can reduce costs, future-proof against data growth, and improve user productivity. The challenges of cloud transformation for these kinds of secure organizations have centered around data security, migration from legacy systems, and performance. In our presentation, we will discuss the notion that cloud computing, properly managed, is poised to bring about a digital transformation to enterprise IT. We will discuss the trend, the technology and the timeline for adoption.
CloudEXPO New York 2018, colocated with DXWorldEXPO New York 2018 will be held November 11-13, 2018, in New York City and will bring together Cloud Computing, FinTech and Blockchain, Digital Transformation, Big Data, Internet of Things, DevOps, AI, Machine Learning and WebRTC to one location.
Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life settlement products to hedge funds and investment banks. After, he co-founded a revenue cycle management company where he learned about Bitcoin and eventually Ethereal. Andrew's role at ConsenSys Enterprise is a multi-faceted approach of strategy and enterprise business development. Andrew graduated from Loyola University in Maryland and University of Auckland with degrees in economics and international finance.