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.

Read more about me >>

Reach out to me with any questions you have on Computer Networking, Modems, Routers, Internet services, etc.

eBGP Peering: Intent-Based Path Selection

eBGP Peering: Intent-Based Path Selection

Afroz Ahmad Jun 13, 2011 8 min read

The backbone of inter-Autonomous System (AS) communication on the internet…

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Cisco IOS Dot1x Authentication Configuration

Afroz Ahmad Jun 12, 2011 12 min read

Ah, 802.1X authentication – a true veteran in network security,…

QinQ Tunneling

QinQ Tunneling: Modern Deployments and Automation Practices

Afroz Ahmad Jun 11, 2011 23 min read

When I first wrote about QinQ tunneling (or IEEE 802.1ad,…

The Big Picture MPLS Network Overview

Foundational MPLS Terminologies

Afroz Ahmad Jun 10, 2011 11 min read

As a senior network engineer, I’ve witnessed firsthand the dramatic…

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MPLS VPN Scenario: OSPF Loopback /32 Routes

Afroz Ahmad Jun 9, 2011 9 min read

OSPF /32 Issue in MPLS VPN Scenario: A Modern Troubleshooting…

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OSPF Cost Manipulation: Modern Best Practices and Automation

Afroz Ahmad Jun 8, 2011 8 min read

As a network engineer, I often find myself fine-tuning routing…

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Switchport Mode Private-Vlan

Afroz Ahmad Jun 5, 2011 11 min read

Hi guys! I’m back, and as always, it’s great to…

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BGP Reachability Best Practices

Afroz Ahmad Jun 3, 2011 8 min read

The landscape of Border Gateway Protocol (BGP) reachability and robust…

BGP Filtering Best Practices

BGP Filtering Best Practices: Techniques and Guidelines for Using AS-Path Filters, Distribute-Lists, Prefix-Filters, and More.

Afroz Ahmad Jun 3, 2011 22 min read
BGP Filtering Best Practices: Techniques and Guidelines for Using AS-Path Filters, Distribute-Lists, Prefix-Filters, and More.
BGP Default Routing

BGP Default Routing

Afroz Ahmad Jun 2, 2011 13 min read

Originally published back in 2011, this post introduced the essential…

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Eigrp Unequal Cost Load balancing

Afroz Ahmad Jun 2, 2011 9 min read

Today, revisiting a topic from my earlier lab days back…