OSPF LSA Types Simplified... Seriously!

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In this video, we cover OSPF Link State Advertisement (LSA) Types. This topic is important for both your ENCOR and ENARSI studies.
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Kevin Wallace, CCIEx2 #7945 Emeritus (Collaboration and R&S)
Homepage: kwtrain.com
Twitter: / kwallaceccie
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OSPF LSA Types Simplified... Seriously!
• OSPF LSA Types Simplif...
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[@howtobasicbreathe8457]

Best video explaining lsa types in the history of networking, great job Kevin!

[@danilopadula]

Showing a network topology plus the OSPF database made it simple to understand. Thank you Kevin for putting this video together.

[@moorishbrutha4363]

This is one of the most *LOGICAL/COMPREHENSIVE* videos I have ever came across of dealing with IT, thank you.

[@BeeBumper]

Surprisingly I have been looking at these for a while and I just sat down and regurgitated LSA types 1-5 and found I know more than I thought, looking forward to your presentation with a little more understanding.

[@oldworldobserver]

great video Kevin! really helped me understand this concept

[@seeker-of-knowledge-777]

This simplified things IMMENSELY. Kevin, I greatly appreciate this. You're a great man!

[@markeanes8126]

Kevin, I've watched many different videos on this topic which can be so confusing. Your video made this topic completely understandable, no disrespect to others, really well explained.

[@mc-wi8wp]

Thank you. I'm learning now for a Juniper certification, but for this vendor there aren't many videos on the topic, so I "take" from here everything I can :p

[@charishmareddy4388]

Cleared all the confusion about LSAs. Thanks, Kevin.

[@AliAdnancoach]

ton of thanks i search a lot but didn't understand the concept and when i watched this video i understand all the idea !

[@shirsabo7545]

Have seen tons of videos explaining LSA Types, but yours is the best!

[@javedqwert]

BEST BEST BEST of the world video for LSA ... clear simple explanation .... hats off to you .................

[@ajkonik418]

Thank you Sir. Your lessons are really awesome. The concept of LSAs as peaces of a puzzle is also quite precise. I will use it

[@BeeBumper]

First Bravo, you explained Stub and Totally Stubby Areas in a way that just took all the confusion away. Originally wrote: Well I must say you fixed the confusion I had with Type 3 LSA's, I did assume it was a single summarized address that allows the Other areas to reach any one of the networks in the desired destination area. So thanks for clearing that confusion up. It is clear as a bell after watching this and building your network and testing that network.

[@danielshin3559]

Just got me perfectly. I love what you’ve done with LSA stuff here. Thanks a lot!

[@valentinamerturi2330]

This video is excellent! I enjoyed watching it and you explained this topic sooo well - thank you!

[@erothwell]

Can never watch enough of your videos. I’m always learning something new.

[@sudipkoirala8292]

This video is great and helped very quick recap about LSA types.

[@prabhakarshandilya6082]

Thanks a lot for making LSAs easier ❤️

[@technicalthug]

Great work as always Kevin!

[@metallica100]

Great Job! Just signed up for the encor exam!

[@paulmacgiollacaoine8619]

Thanks Kevin, great video. Question: why is there only one LSA type 2 in Area 0, What defines a transit network I guess I'm asking? Many thanks ❤

[@rougearlequin]

It starts to make sense

[@kellymoses8566]

EIGRP is so much simpler than OSPF I wish it was used more widely.

[@alexanderrudakov59]

Brilliant explanation!!!! Do appreciate your work!

[@juliop101]

This video is seriously incredible!

[@RichardWilson02]

Great explanation and flow

[@sultonmurodrajabov8956]

Awesome! I learned a lot from this video, thank you a lot!!!

[@rahulchoudhury7968]

Thank you so much for the awesome explanation !!

[@numansmail]

Many Thanks as always KC, I was just reading and some OSPF labs for my encore... Brilliant refresh and presentation :)

[@demetriorosario8134]

thank you so very much for this lesson Kevin.

[@chethanab7726]

Amazing Sir :) Simple but elegant.

[@techleo8842]

Brilliant explanation and very informative!! loved it a lot Thanks, Kevin !!

[@anilbhan3713]

Awesome way

[@oleggorenkov]

A couple of routers? I didn't understand what a trasit network is. But in what cases the second type of LSA is needed, I understand.

[@daviderosignoli6513]

Hi Kevin, congratulations for the video, great explaination! I have only a couple of question, hope you can response. 1)If the other as is running OSPF instead of EIGRP/RIP is the same, isn't it? 2) In the final example can area 0 be defined as totally stub zone? Thanks in advance!

[@hatemnegm2688]

Great, I wish it were longer

[@BeeBumper]

Quality over quantity every time

[@joshmanhuwa2475]

Hi Kevin I have been trying to figure out what I need to know In order to start an ISP. I am more interested in the infrastructure required to start a very good ISP servicing 1000 clients.

[@mudasir2168]

Amazing Explanation...

[@BeeBumper]

This has been driving me nuts but you sound just like Mike Rowe.

[@xeifora]

If don't mind, can you enlighten me with type 6 LSA, I don't find it here in the video :)

[@marcelbeckeherm6298]

Great!, as usually :) Thanks Kevin !

[@sharongruber6335]

excellent video!

[@hammadiazaiez9337]

hello, fun fact that I'm writing this comment after passing my faculty network exam and founding one mistake! i mean you learn the hard way😂 in nssa you said that type 7 lsa will be injected in area 0 with type 5 and 4, which is not correct, there is no need for type 4 in this area and it will not be sent in area 0 at all, only type 5

[@amirahmed1404]

Great explanation 👍

[@MuhammadAsif-jx8bo]

Very nice lesson.

[@demetriorosario8134]

kevin, what happen with the type 6 don't exit? why this jump to LSA 7 just curiosity

[@kwallaceccie]

Great question! Type 6 is used for multicasting, and OSPFv3 uses Types 8 and 9 for IPv6 routes. However, I wanted this video to focus on exam-relevant OSPFv2 LSA Types. I hope that helps and that you enjoy your studies!

[@demetriorosario8134]

thank you so much for a quick repond, I want to get more solid is all of this.

[@denied501]

Hi Kevin, I really like your videos on youtube so far. I recently found your course on CCNA 200-301 on Udemy which is 17 hours in length. So, my question is, majority of other CCNA videos are around 35 hours mark, so how come your course is more than half in length. If you could clarify this, that would be great. If case is that the 17 hours of content is actually worth more than what it looks like, I am willing to take your course.

[@kwallaceccie]

I can’t speak to the structure of other courses. However, our course covers all topics on the exam blueprint.

[@kwanelendabane5575]

Most guys like CBT nuggets talk lot of stuff during the lesson that are not course related thus prolonging time.

[@pascal0868]

Lol. The 35 hour videos must be from Anthony Sequira. That guys takes the scenic route when it come to saying anything.

[@buckyrauch2953]

Very helpful!

[@jeffmcgee1849]

God I love this

[@anthonylilomba8917]

I have a question : Can I use the New Packer tracer version 8 for CCNP lab?

[@BeeBumper]

Well I just built and tested the network in this video and it had no problems redistributing eigrp and emulating multiarea ospf. There are some limitations on more advanced commands or subcommands but it has come a long way. It isn't gns3 but better than nothing. What exactly do you need to emulate? A lot of topics that were not part of packet tracer before are now in my experience with just fewer advanced options. I will say occasionally multiarea ospf does have a problem in PT but if all your configuration checks out try rebooting the devices using the power toggle on the bottom left of PT screen just be sure to save on the devices first. I have noticed topics such as hsrp are better in the new version switching over from active to standby and back without incident. Anytime it does fail a reboot of the devices usually fix it if config is correct

[@justinava1675]

Someone needs to make it so you only need 2 lsa types to do this. 7 Lsas to accomplish this type of task seems out dated

[@mmmm-gs4mc]

is that a Texas accent?

[@raziarahmat4299]

.

[@andrzejkowalski8671]

Why are you hurry up? Its not an explanation. I can read it on Wikipedia

[@BeeBumper]

Seemed clear as a bell ringing to me