Internet Services, Modems & Routers, Tech Reviews, Computer Networking, Security, and more!
Afroz Ahmad – Main Author of AfrozAhmad.com
Welcome to Afroz Ahmad – I’ve been writing about computer network technologies on my blog since 2012. My name is Afroz Ahmad, and I am a seasoned Network Engineer and author of AfrozAhmad.com.
I’m a CCIE with more than 17 years of experience in Computer Networking, Data Centers, Telecom, Internet Services, and ISPs. Currently, I work as a Network Designer for a leading ISP equipment vendor. I share my expertise through my blog and courses, aiming to help people solve everyday internet issues, select the appropriate equipment for their tech needs, and simplify complex networking concepts for both beginners and experienced professionals.
Reach out to me with any questions you have on Computer Networking, Modems, Routers, Internet services, etc.
OSPF states Explained [with Infograhic]
Let us look into OSPF states: down, init, 2-way, exstart state, exchange state, loading, and full state, which help a router form OSPF's neighbor adjacency.
Open Shortest Path First – What is OSPF in Networking
Learn about Open Shortest Path First or What is OSPF in networking and How it works and forms neighbors with other OSPF routers. In Short, the OSPF protocol is a link-state routing protocol that is designed to work in a single Autonomous System.
What is Routing Information Protocol – RIP v1 and v2 – The Definitive Guide
In this post, we'll define what is Routing Information Protocol, or RIP and how this routing protocol works, and show its pros and cons before diving into details like versions (RIP v1 and v2), timers, update types, and configuration.
Understanding Dynamic Routing Protocols Types [with Infographic]
Routers run different dynamic routing protocols types to update their routing table automatically. Depending on the scale and nature of your network, you might need to use one or more different types of routing protocols explained in this article.
What is a floating static route, and its characteristic?
In this blog post, you’ll learn about floating static routes, their characteristics, and why you might use them. Discover how to configure floating static routes effectively with a workflow and sample configuration for real-world scenarios.
What is a Routing table, explained with Show IP Route Command Cisco
Wondering what is a routing table and what are the types of routes it contains? Read on to learn more! Furthermore, we will explain why the router uses routing tables and how you can use the show ip route command cisco to view its contents.
Best Computer Networking Course Online for Beginners with Ratings
Finding the best computer networking course online can be difficult if you want to pursue a networking career. So look no further than this list of hand-crafted 18 beginner-level computer networking courses online. These courses will teach you networking basics and help you start your computer networking career.
What is Routing in Networking, and How Does Routing Work?
Understanding how routing and routers work is essential if you want to troubleshoot or design networks. So please read this article to learn more about routing in networking, and its related details like how routing works, routers, different types of routing, etc.
Comparison between TCP IP vs OSI Model (with Cheatsheet PDF)
The TCP IP and OSI model are two different models used to explain how a network operates. We will look at key similarities and differences between TCP IP vs OSI model in this article.
What are the 4 layers of the TCP IP model?
Learn what are the 4 layers of the TCP IP model, how they work together, and which protocols they use. Bonus – How to use the TCP IP model for troubleshooting.
OSI Model Cheat Sheet Infographic
This OSI Model Cheat Sheet Infographic is a free resource to get a quick summary of the most important concepts of the OSI model.
What are the 7 Layers of OSI Model in Networking?
This blog post will explain the 7 layers of OSI Model, and how they work with each other in easy-to-understand language.
Which is Better and Why?- MSTP vs RSTP vs STP vs PVSTP vs RPVST
Delve into “MSTP vs RSTP vs STP vs PVSTP vs RPVST”: Key distinctions include convergence speeds, VLAN management, and device compatibility.
What is MSTP – Multiple Spanning Tree Protocol
This blog post will discuss What is MSTP or Multiple Spanning Tree Protocol, its core components, its real benefits and drawbacks, configuration, and best practices.
Rapid Spanning Tree Protocol – What Is RSTP In Networking?
Learn about Rapid Spanning Tree Protocol, what is RSTP in Networking, how it works, best practices, and how to configure it.
STP – Spanning Tree Protocol explained in detail
Spanning Tree Protocol is a layer 2 protocol that is designed to prevent loops in the network. This blog post explains Spanning Tree Protocol in-depth.
What is an EtherChannel in Networking – The Beginner’s Guide
EtherChannels boost network bandwidth, redundancy, and load balancing. This article covers what EtherChannels are, their significance, how they function, various types and modes, a configuration example, best practices, and troubleshooting.
VLAN Trunking Protocol: What is VTP in Networking
What is VTP in networking and what problem does it solve? – VTP is a Cisco proprietary layer2 messaging protocol that allows for the dynamic management of VLANs on a network. Let us dive in and understand VTP in depth.
Ethernet Auto‑Negotiation Explained: How It Works, Best Practices, and Fixing Duplex Mismatches
Learn how to configure your network with auto negotiation in ethernet devices. This setting will allow you to automatically detect and set the speed and duplex of your network interface/adapter.
Ethernet Switch vs Hub vs Router: Key Differences
Discover how Ethernet switches, hubs, and routers differ in speed, functionality, and network management.