At my recent presentation to the 2016 Canadian Utilities Information & Communications Technology Conference in Toronto entitled “Is Your Network Secure or Secured?” I started by explaining to the audience that the purpose of any good security lecture is to scare the audience.
This is the fourth in a series of blogs on the topic of the evolving enterprise WAN that is based on a survey that was completed in May 2016 by 110 network professionals.
The aim of LTE was to make anytime, anywhere services a reality. To achieve this, LTE increased capacity, improved coverage and provided high-speed mobile data. Demand for data has since increased beyond all expectations and today there is a tidal wave of traffic on mobile networks.
At several recent trade shows, most notably the NFV and Carrier SDN Event, Heavy Reading Analyst Sterling Perrin showed a slide demonstrating the industry’s long history with IP and Optical integration. One of the images on that slide is an article in LightReading from April, 2000 entitled “IP over Glass, Who Cares?”, a very interesting article to re-read from a historical perspective to see just how far the industry has progressed in 16 ½ years.
The alchemists of our age, scientists and engineers, have transformed chemical compounds like gallium-arsenide, indium-phosphide, and silicon into miniaturized lasers, light detectors, and thin tubes of glass that combine to communicate information over long distances at unimaginably fast speeds.
The SDN Controller concept was originally developed as the intelligent centralized point of network control and programmability in an SDN environment. However, the name was very quickly adopted by several vendors who claimed that their traditional NMS was a “controller” because it allowed network-wide management and point-and-click provisioning of their equipment. As a result, for many people the line between an NMS and a Controller is blurred, resulting in confusion across the industry.
The last post on the topic of SDNs discussed BGP as a southbound interface to control policy. This form of SDN was once common in hyperscale data centers (though not as common as it once was). In our pursuit of out of the way (and hence interestingly different) forms of SDNs (hopefully this series will help you understand the scope and meaning of the concept of SDNs by examining both common and uncommon cases), it’s time to look at another unusual form of policy injection—Fibbing. In fibbing, a centralized controller engineers traffic flow in a link state network by interacting with the control plane directly, rather than interacting with the forwarding plane or the RIB.