Posts by Jerry Sheehan

Did you know that the busy wireless networks in places like universities and big companies rely on a protocol from March 2009? The CAPWAP protocol is at the core of this technology. It lets wireless access points talk to each other smoothly, even when blocked. It uses DTLS encryption and supports fast Wi-Fi speeds, like…

Imagine a technology that lets businesses act like startups but have the strength of a global giant. This is virtual routing and forwarding (VRF). It’s a key part of modern networking that lets many routing tables work together in one router. Yet, VRF-Lite, its simpler form, is easy for small to medium businesses to use.…

A technology from the 1950s, designed for telephone systems, now powers our digital world. The Clos network, invented by Charles Clos, revolutionized communications, shifting from switchboards to today’s fast, data-driven era. Its principles also inspire modern network security strategies for protecting data. The Clos network made switch systems simpler and cheaper. It cut costs and…

In network infrastructure, 100% of switches start with ports on VLAN 1 by default. But, Native VLANs offer a different story. They can be changed and customized. Understanding network segmentation and traffic handling requires knowing the difference between Default VLAN and Native VLAN. These differences are key to a secure and efficient network. The Default…

Businesses adopting Software-Defined Networking (SDN) report a 72% reduction in network setup time. The benefits of software-defined networking go beyond technology, making it essential for staying competitive. SDN offers more than just speed. It brings reliable networks, quick growth, and strong security. It changes how we manage networks, opening up new ways to connect. SDN…

In the world of digital networking, a key fact stands out: precise network segmentation boosts performance, security, and management. The difference between Switched Virtual Interfaces (SVI) in networking and Virtual Local Area Networks (VLANs) is critical. SVIs route traffic between VLANs, while VLANs create isolated networks across many ports and switches. SVIs make inter-VLAN routing…

Every second, countless packets of data are changed by Network Address Translation (NAT). This is key in today’s fast-paced digital world. SNAT vs DNAT are at the heart of managing network traffic. But what is SNAT, and how does it compare to DNAT? The SNAT meaning is clear when we see how private network requests…