Department of Defense
High Performance Computing Modernization Program


The Software-Defined Networking (SDN) knowledge base provides a concise, yet comprehensive overview of the many technologies subsumed under the broad topic SDN, and collects in one place the lessons-learned by many individuals and companies that have deployed SDN or associated software architectures such as Network Functions Virtualization (NFV). The SDN knowledge base also provides supplemental information for those already using or planning to use SDN or associated software architectures.


Where to Begin

A first-time visitor to the SDN knowledge base might want to begin by reading the Introduction, What is a Software-Defined technology, and What is Virtualization sections at the beginning of the Software-Defined Overview article and then explore the Frequently Asked Questions article.



Some user sites on the Defense Research and Engineering Network (DREN) started updating their existing local networking infrastructure to include SDN architecture in 2012. CenturyLink, Inc. offered SDN and NFV services to DREN since January 2017. In 2021, Verizon Business Network Services LLC began providing networking infrastructure and services to DREN, including a variety of SDN services .

To contribute an article to the SDN knowledge base, or to correct/update an existing article, please contact sdn-team [at]