eBGP vs iBGP - What's the difference?

When we talk about BGP, we categorize it into two different types: external BGP or eBGP, and internal BGP or iBGP. These almost sound like different routing protocols, but are they? What's the deal here? In this video, I describe eBGP and iBGP and explain how they operate. I also share why BGP is designed like this, and what it all means!

Chapters
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00:00 Introduction
00:53 The Structure of the Internet
01:25 eBGP vs iBGP
03:59 Differences between eBGP and iBGP
08:24 Routing Must Already Be Established
09:06 Summary

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🟦 About

Welcome to telecomTech, where telecom and networking technologies... are simply explained! I’m Lazarus, a telecom professional with over 25 years of experience in network design, architecture, and telecom technologies. Over my career, I’ve led major projects, trained professionals, and helped countless individuals earn certifications and advance their careers.

My goal is to make networking and telecom concepts clear, practical, and engaging—the way I wish they were taught when I started learning!

Whether you’re a student, a professional growing your skills, or preparing for certifications like Cisco, telecomTech is here to guide you. Every video is crafted to help you solve real-world challenges with confidence and curiosity.

Join me as we explore telecom and networking as a lifelong passion, not just a job. Let’s make this journey of growth and discovery together!

#bgp #networking #eBGP #iBGP#routingprotocol #routing #internet #protocol #telecomtech

[ketanshah]

You have done an amazing job to explain iBGP and eBGP and you made it very simple to understand! Great work and thank you doing this for the larger community! Keep up the great work!

[stephenwilson]

Wow! This one of the most clear and accessible introductions to BGP. Concise and easy to follow. More please!

[zx]

Great video, enjoy it! Looking forward for the next one.

[JCiuplys]

Good explanation, not too wordy, straight to the point. 10 out of 10.

[erikasantos]

I am amazed as to how well you explain these concepts! Thank you!

[JF-zsjm]

Thank you Lazarus, this is an excellent video👍

[muhammaddikko]

I am here just to get the quick differences between the two but your astonishing way of explanation and in-depth knowledge of this concept motivated me to watch the entire video. The video is so informative and really quenches the thirst of knowledge about this concept. You have my like and subscription and cannot wait to see your feature videos

[asadosan]

Big W to this guy, fell into the rabbit hole of BGP after just searching IBGP split horizon. now i am 6 videos DEEP

[gosteelers]

I'm totally LOST on your explanation concerning the "HANDLING THE NEXT HOP" topic that starts at timestamp @ of 06:03 of this posted video. I'm just not grasping or understanding that part of this video. Can you re-iterate this, in a more comprehendable way, if you.