Computer networks are the foundation of the modern business world. They’re the connections that carry network traffic and link together the hardware and software of every digital device. Without a well-designed and functioning network, businesses and individuals wouldn’t be able…
Understand VLAN tagged vs untagged in plain language. We clarify access vs trunk ports, correct 802.1Q tag fields (PCP/DEI/VID), native vs default VLAN, and modern configuration best practices.
A clear, accurate guide to VLANs and Private VLANs (PVLANs)—how they work, when to use them, and the essential security and configuration details you need.
IP Subnetting divides IP addresses and networks into smaller groups, determining the network and host bits. Learn more with the IP subnetting cheat sheet and CIDR cheat sheet.
IKEv2 is the current Internet Standard (STD 79) for IPsec key exchange. IKEv1 was moved to Historic in 2023. This comparison clarifies message flows, security, mobility (MOBIKE), NAT‑T, and how to migrate.
Network engineers play a crucial role in the tech industry, ensuring smooth network operations and earning attractive salaries. However, becoming one isn’t easy. It involves facing multiple rounds of interviews and being well-versed in basic and advanced network engineering questions.…
What is Cisco vPC: It is a Cisco Nexus Switch-specific feature that provides the capability to the links of the third device that are physically connected to two different Cisco Nexus Switches to appear as a single port channel.
In the current job market, acing a video interview is crucial. With remote work as the new standard, companies are relying on digital hiring practices. Our guide provides actionable advice that could land you a job offer without ever stepping outside your home.
Deciding between HSRP vs. VRRP vs. GLBP is a common challenge for network engineers. The right choice often depends on your network equipment, design goals, and specific redundancy requirements. All three are First Hop Redundancy Protocols (FHRPs) that operate at…
A comprehensive guide to understanding and configuring Virtual Router Redundancy Protocol (VRRP) on modern Cisco devices. Learn about VRRPv3, key concepts like priority and preemption, object tracking, and best practices for IPv4 and IPv6 environments.