OSPF Explained | Step by Step

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In this video we're going to take a look at OSPF.

Open Shortest Path First (OSPF) is a widely used and supported routing protocol.

It's an interior gateway protocol (IGP) meaning it been designed to be used within a single autonomous system. It also falls under the category of Link-state routing protocols.

Routers running OSPF learn about the enter network in order to create routes. They do this by flooding Link State Updates. There are three steps to the process.

Become neighbours - Two routers running OSPF on the same link agree to form a neighbour relationship

Exchange database information - The neighbouring routers swap their LSDB information with each other

Choose the best routes - Each router chooses the best routes to add to its routing table based on the learned LSDB information

#ccna #cisco #networking

[duskears]

The official Cisco coursework for this topic is so wordy and obtuse I really must thank you for posting this video. You explained in 13 minutes what Cisco failed to explain in 15 minutes and several pages of dense acronym-laden text.

You are the real MVP

[victorpolanco]

I've watched about 3 videos regarding the same topic and this is the only video/animation that actually made sense. Great job at explaining a difficult topic in such a simple way! I'm impressed. Thank you!

[darnellg]

This video was absolutely phenomenal! And the joke at the end was priceless.

[nikolayshakin]

This is the most useful and explanation of OSPF, that is absolutely unbelievable for 13 minutes video. Every word said bears only important information and nothing superfluous, especially rooter =)

[NoorAnomaly]

Thank you! I love you videos, clean and simple to understand. There's only so much reading I can take in a sitting! 💖

[FoysalGoniChowdhury]

You high quality Learning Video, I was 2002 year CCNA, CCNP, Router and Switching, now revision. Again.. Thank you so much for your Cisco Videos.

[marcasr]

Read a lot of recommended books on this topic and also watched a lot of videos.. This one has stuck with me for its simplicity and how well you explain the protocol.. Using some cisco white papers to lab this up in EVE-NG and referring back to this video gave me my "Aha" moment... Great stuff on the channel keep it up.

[AirsideSky]

This explanation is so simple and clear you can easily understand even if there are a lot of terms to remember. Awesome tutorial!

[birarasitotaw]

I love his explanation on OSPF and Spanning tree protocol!

[vimukthisineth]

This is what I call effective knowledge sharing. Very easy to understand. Keep up the good work.

[_aibeats]

Those 13 minutes saved me 13 hours!! Thanks a lot .

[hardwiired]

Thanks for the video!! My college professor has just decided to make his own CCNA assignments with very vague instructions. This has helped!!

[HR-fcbt]

OSPF explained in the best possible way.

[loke]

the best explanation i have seen so far, great video

[АндрейКозырев-зш]

Best explanation video that I've seen so far. Good job.

[williesolomon]

Yes. You' ve simplified OSPF in a very impressive explanation. Thanks for sharing your very clear video tutorial.

[datht]

This video is just better explained than the Cisco texts & videos itself. Thanks so muchhh

[ZikrulCahyadi-gk]

PCR-23TIF-Zikrul Cahyadi Tnks for This Lesson

[ayazbandali]

It was a great informative video that can help in answering cisco exam questions. Thank you. BTW, we all know rowter or Rooter...at the end of the day it is ROUTER :)

[gtotrips]

Just remember ‘IT ELF’
> Init
> Two-Way
> Exstart
> Exchange
> Loading
> Full