IKEv1 vs IKEv2 – What is the Difference?
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.
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150+ Interview Questions for Network Engineers with Answers [Includes PDF]
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? A Complete Guide to Configuration & Benefits
A practical, current guide to Cisco vPC on Nexus: what it is, why it matters, how to configure it (safely), and how it fits into modern VXLAN EVPN designs—including fabric peering and Layer 3 over vPC.
How to Ace a Video Interview: 15 Actionable Tips for
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.
HSRP vs VRRP vs GLBP – A Quick Guide
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…
What is VRRP, and How Do You Configure It on Cisco Devices?
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.
HSRP Config – The Definitive Guide with Video, Diagrams, Configs, and Quiz
HSRP is an FHRP (First Hop Redundancy Protocol) developed by Cisco to provide redundancy and high network availability almost anywhere in the network where we have two layer3 devices. HSRP config gives a group of routers a virtual IP address…
Router on the Stick Configuration – Enterprise and Service Provider Example
A deep dive into Router on the Stick configuration with practical, step-by-step examples for both Enterprise and Service Provider networks using modern Cisco commands.
22 Done For You Behavioural Interview Questions and Answers
Behavioural interview questions are designed to learn about your past behavior as it relates to the job you are interviewing for. In this post, we provide expert tips and 22 sample questions and answers to help you prepare.
How to Find Cisco Router Login Details
Struggling to find the login details for your Cisco router? This guide walks you through two simple, effective methods to find default credentials, navigate Cisco's website, and access any router model, from older classics to modern devices.