Networking Week: OSPF Stub, Totally-Stub, NSSA and Totally-NSSA
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- čas přidán 10. 06. 2020
- A large part of understanding the operation of OSPF, and being able to troubleshoot the protocol, is being able to identify the different types of OSPF AREA’s and how they are used to optimize your network infrastructure. In this webinar you’ll learn about the OSPF Stubby Areas, OSPF Totally Stubby Areas, OSPF NSSA Areas, and OSPF Totally NSSA Areas. You will also learn what LSA’s are received within these OSPF Area types. You’ll learn about which routers create these LSAs, why they are created, and how to search for them within the OSPF Database. You will also learn how to configure these OSPF Area types. Whether you work with OSPF in your existing network, or are learning about OSPF for certification purposes, this webinar will prove to be highly valuable to you.
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0:00 intro
1:04 outline
2:40 lsa types
4:19 type 1 lsa
8:15 type 2 lsa
10:41 type 3 lsa
21:58 type 4 lsa
26:42 type 5 lsa
28:31 type 7 lsa
31:56 stubby areas
37:08 totally stubby areas
39:40 nssa
44:44 totally nssa
49:34 lab setup
54:39 stub lab
1:02:06 total stub lab
1:05:10 nssa lab setup
1:08:20 nssa lab
1:15:59 totally nssa lab
I'll admit I'm asking this question without getting all the way thru the video yet. But if you can't have an ASBR inside a Stub Area then how is an LSA Type 7 ever generated when it comes from an ASBR in a NSSA Area? Because you state that one of the rules of OSPF is that an ASBR can't be in a Stub Area.
You are a great teacher! I cleared a lot of doubts that would never be able to clear by going through the study materials. Thanks a lot.
And please make more videos on each topic.
God bless you !
One of the best networking instructors I've ever listened to.
No wonder you are 5 x CCIE!!! Very well explained!!! Learned more in this video than cracking my head at the books.
Until watching this webinar , i was thinking i caught the point with LSAs and how they work but after watching this video , i realized i actually didn't know well how LSAs were functional across the OSPF domain...That was the best video i've ever seen over OSPF multi-area topic which is indeed complicated . Thank you Rohit !
This demonstrates the power of images and diagrams when explaining things. Very well explained in shortest way and detailed. Someone would need to really experiment with routers and then understand which would time consuming, loved it.
讲的很棒，感谢分享
شكرا كثيييير ...الله يسعدك يارب
5x CCIE wow..What do you do for work these days? Deff the best instructor i have ever watched. Very well explained and kept my attention. Thank you. Im on my journey to earn my first CCIE now.
Great Video.. Deep Learning ..love the logic even odd to remember the LSA concept
Hello! Thank you so much for this video, it really helped me understand the LSA's, the stubby area, and nssa. You explained everything very well 👏💖
Excellent explanation of OSPF area and LSA types! Thanks!
This video is awesome: detailed, specific, yet very clear!
I enjoyed learning OSPF, when I get money I will enroll with INE your are the best.
Such a wonderful explanation..Thank you so much
Thank you for the great explanation!!!!👏👏👏
Hi Rohit, Thanks for this great webinar, very informative! Maybe, we could also name it "Demystifying OSPF LSAs and Area types ;)
awesome explanation of OSPF LSA and AREA concepts
love you Sir , thanks for this beautiful explaination
Outstanding explanation !
Las Vegas example was very good to understand. Thanks🌹
This was a great webinar. This really helped with my understanding of OSPF.
Waw... Great cours by great instructor. Thank you
This is really good! I'm working on CCNP ENARSI at the moment and this helped me understand a little more about LSA and stub areas in OSPF
Where in the world did this guy get the time to do 5 CCIEs! Wow!
Thank you so much sir, amazing video
awesome explanations
Son of a GUN... He is dam good to explain.
excellent! :D thanks for sharing
Amazing video sir you delivered the information on the right way
keep it up! nicely explained video! more content please!
thanks man.. great content
You are great Sir !!!
excellente Rohit....
What a class !!!!
Thank you very much
You are the greate teacher
Great effort!!
Waiting for. More. Videos
You are awesome :)
You too!
Excellent Lecturer. You are the best. Very knowledgeable. I dough my hat for you. You will get my mail on this. Thank you very much. This is the most under explained topic in CCNP.
Amazing Thanx A lot
Very good!
Just coming across searching find out this video and mind blowing knowledge you have 5x CCIE what an inspiration, I will check if you have courses on your channel, again the way you simplified the giant, you truly are an EXPERT ❤
Just a question when we talk about within an Area like Cisco says area can have atmost 50 routers so where can we assume this senario, first picture comes on a data center rack, racks where you can say same broadcast domain but even within area routers can be geographically seperated, let's says between cities? So how you say that, any comments please, thanks
informative and well explained 😍
Very well explained
Hi rohit, thank you for share all this information, any plan to do a video on QoS!! Thanks!!
Superb Man 👍👍
Hello sir,
Thanks for making this video .it's was well explained with practical scenario.. please make videos on other topics also..
Actually I was a student of ACIT 😃🤗
Happy to see you with INE.. All the best..
Waiting for your next video
the best 😀
🙏.
Superb
Excellent teaching,
does routers in broadcast segment generate LSA type 1 or only LSA type 2 or both LSAs ??
It only generates type 2 LSA, if the network is a part of larger area it will also generate LSA3.
Rihot if you still follow up on these comments I have a question. You stated that type 2 LSAs are not prefix information. When I drill down into the the LSAs with the " show ip ospf database {router | network} commands I see something different. For the LSA type 1s I only see prefix information for point-to-point links. For all the other links that are transit networks I see their prefix information in the type 2 lsa.
Did I misunderstand what you meant by all the odd LSA types being prefix information and type 2 not being prefix information?
Also anyone else that sees this if you cam clarify for me please feel free to. I'm just looking for clarification.
Respectfully
Anthony
without OSPF summarization will LSA get flooded to another area outside the local area ? anyone ?
Summarization: by this if you are meaning the Type 3 LSA, then it is created by the ABR and with this the other Area get to know about the routes of other area. LSA type 1 resides in only in the local area to carry that information out ABR creates a Type 3 LSA.
Could I answer your question.
N.B: As per my knowledge LSA 1, LSA 2, and for NSSA LSA 7 does not leave their respective areas.
34:45 Why can't Area 0 be configured as a Stubby Area?
It's the backbone. You don't want to block 4/5 LSA's on the backbone because it's the backbone's job to spread LSA across the ospf domain.
Because its core of OSPF network, it’s basically interconnects areas between each other, so there is no need to make it stubby
what is prefix ? exactly..
The network or subnet of a given link.
Why call LSA Type 3 a Summary LSA if it doesn't list all the Network Prefixes in one LSA? If Area 2 in his example has 10 Network Prefixes to advertise then sending 10 different LSA Type 3s into Area 0 isn't a Summary it's a waste of network traffic. Send 1 LSA Type 3 listing all 10 Prefixes and you'd generate less traffic. Just my opinion.