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.
GLBP Details, Configs and Load Balancing Tests
Gateway Load Balancing Protocol (GLBP) is a Cisco proprietary protocol that attempts to overcome the limitations of existing redundant router protocols by adding basic load balancing functionality. Watch the short video and take a quiz to get a quick understanding of GLBP.
How to Copy Large “show tech-support” Output from a Cisco Device Using PuTTY
How to copy a large “Show Tech-support” output from a Cisco device using Putty. This is useful in case you are unable to copy the entire content of the output in one go.
Bridging LAN Over WAN
⚠️ Legacy Technology Notice: This article covers legacy Cisco transparent…
EIGRP Neighbor: AS Number Unknown Explained
In the dynamic world of network engineering, troubleshooting is a…
Cisco PfR/OER: Modern SD-WAN and Automation
Today, we revisit a foundational Cisco feature: Optimized Edge Routing…
MSDP with BGP Address-family Ipv4 Multicast
Today we delve into the foundational architecture of MSDP with…
STP Root Guard: Automation & Best Practices 2025
We'll discuss STP Root Guard, which prevents Layer 2 loops in network anomalies.
Cisco 3560/3550 EOL Console Recovery Procedure
While much of the networking world has shifted towards automation…
Cisco Configure Replace: Modern Use & Best Practices
As a network engineer, I’ve broken configs enough times to…
eBGP Peering: Intent-Based Path Selection
The backbone of inter-Autonomous System (AS) communication on the internet…
Cisco IOS Dot1x Authentication Configuration
Ah, 802.1X authentication – a true veteran in network security,…
QinQ Tunneling: Modern Deployments and Automation Practices
When I first wrote about QinQ tunneling (or IEEE 802.1ad,…
Foundational MPLS Terminologies
As a senior network engineer, I’ve witnessed firsthand the dramatic…
MPLS VPN Scenario: OSPF Loopback /32 Routes
OSPF /32 Issue in MPLS VPN Scenario: A Modern Troubleshooting…
OSPF Cost Manipulation: Modern Best Practices and Automation
As a network engineer, I often find myself fine-tuning routing…
BGP Reachability Best Practices
The landscape of Border Gateway Protocol (BGP) reachability and robust…
BGP Filtering Best Practices: Techniques and Guidelines for Using AS-Path Filters, Distribute-Lists, Prefix-Filters, and More.
BGP Filtering Best Practices: Techniques and Guidelines for Using AS-Path Filters, Distribute-Lists, Prefix-Filters, and More.
BGP Default Routing
Originally published back in 2011, this post introduced the essential…
Eigrp Unequal Cost Load balancing
Today, revisiting a topic from my earlier lab days back…