OSPF Multi Area Explained

[@lucas93177]

Do not thank me for watching *I thank you* for letting me watch your amazing videos without paying anything

[@Certbros]

*I thank you* for watching and for your comment! Thanks man!

[@karinasan7825]

Exactly!

[@lucas93177]

I re-comment to let you know that I got my CCNA R&S!! Your videos really helped me to get it!

[@Certbros]

Great work man! Welcome to the club!

[@richatiwari9388]

I found this channel randomly; I am preparing a few CCNA topics for the interview and this channel is very helpful for me. it is a channel where I shortly get all info. Thank You CertBros.

[@eedept]

What is great about your videos is that you explain the technology without jumping into configuration, this way we can understand what is going behind the seans< also your way of explanation is wonderfull, you are a great teacher.

[@Certbros]

Thanks eedept! Glad you liked the video!!!

[@purplegalaxy5265]

I am a computer Science and Engineering student, I stumbled across your video today, and this is hands down the best explanation I've ever seen!!! Thank YOU! This was AWESOME!!

[@Certbros]

Wow, thanks! Great to hear you liked the video! Good luck with your studies.

[@netrabolde545]

This is still gold, me trying to brush my networking concepts after 3 years now !!

[@Certbros]

Great to hear it's still helping!

[@KevinEzraTV]

@@Certbros Same here, brushing the basics before the interview... It's Great!!!

[@ardentdfender4116]

I'm currently learning this topic for taking my CCNA soon and man your breakdown is so damn helpful its unreal. I took me hours to just try and understand OSPF. But you video presentation does this so well i understood it. You do a damn great job man. COme back soon with new stuff.

[@Certbros]

Thanks Ardent! Glad you're getting value from the videos. How is the studying going?

[@aruizsilva]

Much easier than the previous one on single area OSPF I must say. Thanks for the effort!

[@Certbros]

You're right. Once you get single area, multiple area becomes much more simple. 👌

[@amrkamran4884]

Proper good Information. Really well summarized.

[@Certbros]

Thanks Amr! Great to hear.

[@seantellsit1431]

Great video. I think there are some things that should be revisited. A) there always needs to be an Area 0. B) Other areas MUST have at least 1 router in Area 0. C) Areas dont nessicarily follow phyiscal or logical connections, but they can and sometimes they should.

[@guohenry209]

So the main problems of using single OSPF in multiple areas: 1. A lot of information of LS(including useless information) will occupy the disk space of router 2. Hard to search a piece of specific information in such huge LSDA 3. Updates are flooded throughout all the network occupying a lot of resources 4. Summarizing all the reasons above, using single OSPF in multiple areas will occupy a lot of resources (including disk space, bandwidth, power, etc.) Backbone area: every other area must join to the backbone area. ABR: Area border router, whose interfaces in two or more areas and can summarize some specific area LSDB(e.g. 10.0.0.1+10.0.0.2-->10.0.0.0/30). ASBR: Autonomous system boundary router, connecting to other non-OSPF routing protocols such as BGP

[@ElreyRayo]

is there a multiple OSPF instance solution then?

[@saimkhan89]

The animations are great. We need more videos like this. Would be great if more detail and information is included (LSA types etc.)

[@Certbros]

Thanks Saim!

[@fadzaik6343]

For visual learners this is incredible, thank you kindly and please have more videos for CCNA and NP, Thanks Bros

[@Certbros]

Thanks Fadzai! A lot more videos planned!

[@techymoh]

Improved a lot than the very start, and that super boom intro music 🔥

[@Certbros]

Thanks Mohit! Keeping pushing to do better!

[@EyeIn_The_Sky]

Great explanation. I wish you had one about the different Area types, that is the hardest OSPF aspect, for me at least, to understand and grasp and even to begin using it in the real world on which type you would use when and why in a practical sense.

[@joseluis7118]

Best explanation I found on youtube about the subject.

[@Certbros]

Thank you Jose

[@hardwiired]

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

[@_-.-_261]

बहुत ही बढ़िया भैयाजी। ओएसपीएफ तो बड़ा ही मजेदार है।

[@brysonsims5752]

Your videos make "network nerding" very easy for me! An EIGRP video would be nice as well.

[@Certbros]

Thanks Bryson! EIGRP next

[@andriantorosyan6028]

What you do with your videos is truly amazing. Really like the explanations.

[@ChristianLeon81]

Very good way to get the concepts down. Haven't seen better videos on youtube about or for Cisco/CCNA/Networking

[@Certbros]

Thanks Christian!!

[@xxtriplex95]

so glad to see you guys back!

[@Certbros]

Thanks!

[@pascualsevilla5590]

Additional Notes aside from the description given above. Backbone Routers - This are routers that are in or partially in the backbone area. ABR ( Area Border Routers ) - Routers that connect to more than 1 area. Internal Routers - This are routers that are in a single area but not the backbone area. ASBR ( Autonomous System Boundary Router ) - This are routers that are connect to other non-OSPF routing protocols (i.e EIGRP or BGP)

[@omairij]

Man, love your videos. More than what I can expect.

[@Certbros]

Thank you Omair! Really great to hear.

[@yaseralamoudi4088]

the guy or guys behind this channel are great no doubt

[@Certbros]

It's just me! Thank you Yaser 👍

[@TheFriedLife]

superrrrbbbbbb superbbbbb..mind blowing sir...we want more such videos on OSPF LSA types, OSPF areas..thanks a ton...

[@Certbros]

Thanks Arijit!

[@umairakram6383]

Way of teaching is excellent.. Well done and Keep it up

[@Certbros]

Thanks Umair!

[@shakilalig]

Certbros.. Thank you for making life simple for us. Ought to say, it feels as if too good(easy) to be true..

[@Certbros]

Thanks for the comments Shakil! Keep it simple, the detail can come later.

[@Nick_90-in]

You create video in such a simple way that it make complicated topics look so simple. I really want you if you create one such video for BGP too.

[@TechJedi007]

These explanations make it so simple

[@Certbros]

Thanks JP! glad you like it 👍

[@SSAKannadiga]

The videos on OSPF are nice and crisp. You should think of adding the different types of LAS video to the list

[@pdedoaa9350]

really it simplify the protocol and explain it in proper way

[@Certbros]

Thanks! 👍Glad you liked it.

[@purplecrayon7281]

Best explanation of multi-area ospf! thanks!

[@matthewsullivan3972]

Great video. Very well presented, easy to understand explanation. Subscribed based off of this video alone.

[@Certbros]

Thank you Mathew! Welcome to the channel 😁

[@alexandresilvanano8736]

Extremely precise explanation! I thank you for this content!

[@Certbros]

You're welcome Alexandre! Glad to gear it helped.

[@diegocarballeda7230]

Great content! Very clear and concise, good job guys.

[@Certbros]

Glad you liked it!

[@danveersingh7715]

Hey @centbros i just love how you explain any topic. Keep the fire burning man!!!

[@Certbros]

Thanks Danveer! More videos to come

[@jeffabrew5262]

Greetings Cert Pros, Excellent Training on OSPF! I will be continuing on with more on OSPF, Subnetting, VLANS and CLI. Are the audio transcripts available for download for each training module? It helps a lot with note taking. I fancy a few cups of tea and biscuits while watching the training. :0) Cheers! Thank you -Jeff Abrew

[@PETAJOULE543]

Great video, now I feel that I completely understand OSPF. Could you make video explaining BGP as well?

[@Certbros]

Thanks! I will definitely be making this at some point

[@RobertLopez-zh3ex]

Hey man, could you please do a Vídeo about EIGRP?

[@Certbros]

Working on it now

[@BLOEDLINK]

@@Certbros Thank you! Your explanations are the best on youtube. Keep it up!

[@skr0nytbe389]

One basic question. Do Backbone area contains just only one router? If not, other routers in Area 0 which may not be communicating outside, will they be also considered Backbone routers?

[@PiggsyPc]

Thank you very much for clear , concise and wonderful presentation

[@Certbros]

You're welcome! Thanks for the comment!

[@coursautodeskrobotstructur3369]

Again, well explained. I loved it.

[@vishalnaik5888]

I like how the Routers get excited whenever they receive LSUs😄😄

[@Certbros]

🤣

[@Adora0_0]

It is well broken down and easy to understand

[@Certbros]

Thanks Franklin!

[@YousufBabarzai]

Great videos, watched of em. Would you plz do a similar graphical video on other routing protocols such as RIP, RIPv2, EiGRP and explain the administrative distance, administrative vector and link state. Thank you

[@Certbros]

Thanks!! This videos are planned. Working on EIGRP next.

[@abrarshariare5835]

It will be sin if you watched their videos and didn't press the LIKE. Thank you Certbros

[@orleydoss3171]

Awesome video as always 👍

[@Certbros]

Thanks Orley! Appreciate it

[@gavinshirk8273]

dude you are the best you British genius

[@Certbros]

Haha 🤣 Thanks Gavin!

[@MarsieHellscream]

Awesome stuff!!! Do you have one about HSRP planned? :D (as a Cisco tech engineer myself, these videos are AWESOME :D )

[@Certbros]

Thanks! Yes it's 100% on my to-do list!

[@MarsieHellscream]

@@Certbros Awesome! :D These videos are quite useful when you study since they cover the basics (I recently got my CCNA R&S )

[@rajsonu27]

Nice one, easy and simple , thanks mate

[@Certbros]

Thanks

[@garymiddleton7115]

Another really useful video - Thanks.

[@Certbros]

You're welcome 👍

[@ruck-tech7163]

Excellent Explanation, thanxx again!!!

[@waleed3able]

could you please do videos on LSAs and also on Stub area and NSSA for OSPF ?? Will be waiting for you explaining these topics

[@arghosinha1424]

Amazing work, very helpful, thanks a lot.

[@Certbros]

Thank you. You're welcome!

[@HarshKumar-me6ds]

Amazing video man. Please keep them coming.

[@Certbros]

Thanks Harsh! Appreciate the comments!

[@keitwilliamsmusic]

Well, that was helpful. Love your videos! Thank you!

[@Certbros]

Thanks! Glad you liked it!

[@bareedmohammadnur629]

Thanks so much! Could you please make a video on BGP?

[@networkingwithh4716]

Great stuff 👍

[@Certbros]

Thank you!

[@jnyfah]

Enjoyed this series 😌

[@enriquegabriel7708]

Wow... you are just amazing.

[@Certbros]

Thanks

[@timo-weyne4141]

Give complete course ccna start to network adminatations

[@Certbros]

Hi Abdi, I have a full CCNA course that I'm working on. You can register your interest using the link in the description. 👍

[@АндрейКозырев-з2ш]

Hello, can you do a video on BGP?

[@blade8485]

That would be good as well

[@jslegers1973]

Great explanation. Thanks.

[@tijaabi3046]

thanks teacher its my presentation

[@Certbros]

No problem

[@vinbaldwin]

Hi Sir, nice video any idea when can we get for BGP too :)

[@Certbros]

Thanks, Vinay. BGP is on the list but it will be a while. You will see a lot more content being put up this year.

[@vinbaldwin]

Thank you again

[@khansamrah90]

this video really helps a lot. Thank you

[@Certbros]

Thanks!

[@arghosinha1424]

Very informative 🖤

[@Certbros]

Thank you!

[@MrBrightsides]

liked commented and subscribed, keep those great vids coming!

[@Certbros]

Awesome thanks!

[@TheONEHD1762]

just perfect - thank you

[@weactweimpactcharityassoci3964]

Great explanation i just became a new subscriber in your channel

[@salvadorteixeira2752]

Man you saved my life

[@victorpolanco2192]

Thanks for the video!!

[@Certbros]

You're welcome!

[@jesbindersingh9729]

What will happen if one of the router is down? or what will happen if the router keeps on activating and deactivating by an attacker?

[@chotemaster-sk1069]

Can one router interface be a part of more than one OSPF areas?

[@JunPetsWorld]

Thank you for this tutorial

[@menasam26]

Thank you for the great videos

[@kaidjohardudhiawala2549]

Fantastic explanation

[@ibrahemkurd8792]

thanks man that was helpful

[@Certbros]

No problem at all. Glad you liked it!

[@guieguima]

Thank you, your videos are really helpful! :)

[@Certbros]

Thanks!!!

[@m22d52]

1:40 For someone a problem, for another... "A revolutionary technology bLoChAiN bItCoIn nOdE"

[@vigneshvigu7854]

Can you please update bgp?

[@Certbros]

BGP is on my to-do list after the CCNA 👍

[@highnpure4092]

Very nicely explained

[@xavierlorde]

Hooray for rooters out there learning to routers

[@Certbros]

HAHA!

[@ElreyRayo]

no CertBros website?

[@Certbros]

There is but I've put it on hold while I focus on more videos! It will be live soon!

[@friohao5398]

Like first, then watch!

[@devangmakwana2788]

Explain type of lsa and state

[@nagarajthalluri7436]

master piece

[@Certbros]

Thanks!

[@SantiagoRebella]

Amazing :D Subscribed!

[@Certbros]

Thanks!

[@david90210ca]

ty

[@ДониёрМахматкулов]

Very well explained thaks

[@moreet]

Is R1 an internal router too?

[@יאירמישלוב]

Interesting and Informative

[@aashishsharma9916]

How many routers we can design in a single area???

[@thiwankadilshan7910]

verry helpful content

[@Certbros]

Thanks

[@gizmo95]

great video

[@Certbros]

Thanks!

[@windwalk8970]

Really nice video.!!

[@Certbros]

Thanks Diego!

[@salonikumari1247]

Awesome❤

[@Certbros]

Thank you Saloni!

[@AllenAndersonTaylor]

please do EIGRP!!!!!!

[@Certbros]

Working on it!

[@takjr0]

If there are more routers inside one area, it will have the DR and BDR election inside it, right?

[@Certbros]

DRs and BDRs are per multi access segment rather than per area.

[@takjr0]

@@Certbros can you explain it a little more? Didn't understand