When we think about networking, we think about things that go bump in the wire—things that place bumps in the wire. Such things could be switches, load balancers, firewalls, routers, gateways, etc. The list is not all that long, thankfully. Things that put bumps in the wire are at odds with software-defined networking (SDN). SDN relies upon key services to exist. These services are DNS, identity management, and key management. Without these, many systems would fail outright. However, they are not considered network functions. Network functions are considered to be the bumps in the wire we need to make applications work. The goal of network functions virtualization (NFV) is to streamline this process, to reduce complexity while maintaining compatibility. NFV and SDN together lead to an interesting mix of hardware and software, and some of these just do not interoperate well. Is there a better solution?
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Edward L. Haletky, aka Texiwill, is an analyst, author, architect, technologist, and out-of-the-box thinker. As an analyst, Edward looks at all things IoT, big data, cloud, security, and DevOps. As an author, he has written about virtualization and security. As an architect, Edward creates peer-reviewed reference architectures for hybrid cloud, cloud-native applications, and many other aspects of the modern business. As a technologist, Edward creates code prototypes for parts of those architectures. Edward is solving today's problems in an implementable fashion.