Network functions refer to the various tasks and operations performed by networking devices and systems within a network infrastructure. These functions are essential for the smooth and secure operation of networks, allowing data to be transmitted, processed, and managed effectively. Network functions can include routing, switching, firewalling, load balancing, intrusion detection & prevention and more.
Now, consider deploying and operating these same network functions – not in the cloud, but on your edge – on a scale of thousands, or even hundreds of thousands of devices. On top of that, take into account the additional costs of software licenses and maintenance contracts and you can already see your TCO inflating quickly. Then again, you’re going to say – we’re talking about basic connectivity needs here – these network functions provide basic connectivity and we need them. Yup – but what if there was a better way?
There seems to be a prevailing misconception that all routing capabilities have to live at the edge, but in reality, most of these capabilities are much better suited for your core network infrastructure, while only minimal routing features are actually essential at the edge. In fact, the more routing capabilities you place at the edge, the higher the potential for security vulnerabilities. Routing protocols are specifically engineered to handle large-scale networks with numerous routers and intricate routing policies. However, implementing these same protocols at the edge is probably overkill. Even more than that – deploying, managing and maintaining all of these routing capabilities at the edge is resource intensive – It involves investing in specialized hardware, software, and skilled engineers to handle the details.
But wait, there’s more. Routing isn’t the only capability you need, right? What about your firewall? When it comes to your basic connectivity, security is always important – but it’s essential to recognize that utilizing just the basic firewall functions at the edge doesn’t automatically mean that you’re compromising on security. In fact, a well-designed and well-implemented firewall can offer robust protection without unnecessary complexity. By focusing on a few key features and adopting best practices, such as restricting access to only essential ports and services, you can strike the right balance between functionality and practicality.
So essentially, by limiting feature sets, and prioritizing only essential features needed at the edge for your routers, firewalls and other functions, you can significantly reduce expenses and ultimately, your total cost of ownership. This approach not only saves costs, but it also makes sense – simplifying the configuration and management processes, and making them more manageable and efficient.
Now let’s take this one step further. What if instead of purchasing separate devices for your routing, firewall, and other basic connectivity needs at the edge, you could have one single device that could perform all of these functions? One device with an integrated router and firewall (and multiple other functions), all consolidated onto a single platform. Just think of the incredible drop in the number of devices, cables and power sources required for your edge network. Put all of that together, and there’s no doubt that integrating your network functions can significantly lower the costs involved in deploying large amounts of edge devices across massively distributed sites.
