Free CCNA | OSPF Part 2 | Day 27 | CCNA 200-301 Complete Course

In this video, Day 27 of my free CCNA 200-301 complete course, you will learn about OSPF, Open Shortest Path First. OSPF is a link-state dynamic routing protocol, as opposed to the distance vector routing protocols RIP and EIGRP. You will study OSPF metric, OSPF neighbor adjacencies, and some additional OSPF configuration.

In this FREE and COMPLETE CCNA 200-301 course you will find lecture videos covering all topics in Cisco official exam topics list, end-of-video quizzes to test your knowledge, flashcards to review, and practice labs to get hands-on experience.
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0:00 Introduction
0:47 Things we'll cover
1:39 OSPF Cost
4:01 Changing the reference bandwidth
5:30 OSPF Cost (cont.)
10:11 OSPF Cost summary
11:06 OSPF Neighbors
12:58 Neighbor states - Down
13:55 Neighbor states - Init
14:33 Neighbor states - 2-way
15:55 Neighbor states - Exstart
17:11 Neighbor states - Exchange
17:52 Neighbor states - Loading
18:53 Neighbor states - Full
19:51 OSPF Neighbors summary
22:11 OSPF Message types chart
22:41 OSPF 'show' commands
24:23 OSPF Configuration (cont.)
26:27 Things we covered
28:22 Quiz 1
28:56 Quiz 2
29:57 Quiz 3
30:52 Quiz 4
31:41 Quiz 5
32:45 Boson ExSim

#cisco #CCNA

[JeremysITLab]

ERRATA: At 4:57, I said 'The 100 megabits per second I configured as the reference bandwidth...'
. It should be *100, 000* megabits per second (or 100 *gigabits* per second).
At 6:44, it should be '100 ( R1 *G0/0* ) + 1 (R2 L0) = 101', NOT '100 (R1 *G1/0* ) + 1 (R2 L0) = 101'
At 31:10, the command should be 'auto-cost reference-bandwidth'. There is a missing hyphen.

[ghwang]

If anyone finds this helpful, my Cisco teacher used "Demons In Texas Eat Eels Like Fries" to help my class remember the order of the ospf states

[kevinhayes]

Here i am wishing i had discovered these videos before i took my exam. So finely detailed and precise in presentation.
I feel like i have fallen, then woken up with a massive light bulb on in my brain. You have a genuine gift for teaching.

[redddboy]

Jeremy, I just want to thank you for your time and efforts in making this video series for the CCNA. You explain things very well. Now that I'm all caught up, I'm looking forward to every Sunday when you release a new course video. You are a rock star sir!!! :)

[agnivbanerjee]

You know what's the best part, your clinical execution in making your video understandable and more logic, keep I the good work, I'm a ccna 201-300 aspirant, already been working under an isp company, role network technician

[moienanwari]

I don't know how to thank you, Jeremy, I started this course with 0 knowledge but now I completely understand everything, thank you so much . wish you good luck and long-lasting life,

[odrommouniengue]

thank you so much Jeremy for all of these videos (ccna course) i`m so grateful and happy since i found your channel. i`ll tell you when i pass ccna!!! following you from south Africa .

[-bljq]

very good lecture, thorough and clear, in depth, many thanks to Jeremy for the hard work.

[StuartTufft]

I'm still going with the course Jeremy! My exam is booked in too. A cool thing I noticed today is that the captions on these videos are extremely accurate.

[markobarbaric]

Jeremy you’re doing a great job, made it look easy!

btw : The following fields in the OSPF Hello packets must be the same on both routers in order for routers to become neighbors: subnet, area id, hello and dead interval timers, authentication, area stub flag and MTU. I think that it is important to know for CCNA.

[jhilmarmolina]

This Monday pass the CCNA! I am really excited. Your videos helped me a lot. Thank you very much Jeremys!

[ATFofficial.]

That boson question today was excellent, did a wonderful way highlighting how routers choose paths

[tithiram]

Hi Jeremy, This is an outstanding video series. I love it. Thank you so much...!!!

[travelandexplorebd]

This is insane !!! how detailed way you can describe the thing beyond imagination.

[brooksamuel]

Thank you for this amazing lecture. you help me to understand the concept of network topology. Much gratitude!!!

[aniswlidi]

This is the best explanation of the OSPF neighbour. Very appreciated.

[michaelgodwin]

Why did we say that to reach R2's L0 interface, it has to leave it? It doesn't have to leave it to reach it. Is it more of like just an added fee for going to a Loopback address inside a networking device?

[bright]

Waiting for the whole lessions finished soon, then I can follow the CCNA exam . Thank you, Jeremy.

[muhannedbelaid]

Another video for this amazing learning journey, thank u Jeremy ^^

[dobly]

I am following the Neils Cisco CCNA boot camp in order to continue with my studies and be able to present my test in November this year. But I will happily pay for a full course dictated by you. an awesome job with the videos and amazingly easy to understand the topics.