CCNA Quiz: Spanning Tree Explained: Which ports are blocked and why? CCNA | CCNP

Which ports are blocked by Spanning Tree in this topology? Which ports are root ports, designated ports? Can you work it out? This is one of my daily quiz question scenarios. In this video, I give you the answer and explain the solution.
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#CCNA #spanningtree#GNS3

Пікірлер: 57

  • @The4297
    @The42975 жыл бұрын

    Hi David, as usual, video was great. Minor correction: At the last segment of video, blocked ports are defined with DP (red color) , which should be BP. It is typo error, which may be confuse some. Cheers.

  • @davidbombal

    @davidbombal

    5 жыл бұрын

    Thanks! Missed that :(

  • @jainbrooks1983
    @jainbrooks19833 күн бұрын

    This video is very thorough and I felt it was a wonderful quiz question. I hope that the spanning tree from this video is still being used for CCNA exam.

  • @zmikund865
    @zmikund8655 жыл бұрын

    Got my CCNA 200-125 today thanks to your Udemy course and your troubleshooting videos. Thanks alot David! Wish you all the very best!

  • @davidbombal

    @davidbombal

    5 жыл бұрын

    Congratulations! That is fantastic news!

  • @naingaung7827
    @naingaung78275 жыл бұрын

    Thank you very much. Mr.David. Please more quiz and with your awesome teaching.

  • @allenxd
    @allenxd5 жыл бұрын

    Thank you David! Just in time, I was looking for a refresher on this topic! Thank you very much!

  • @Deals80
    @Deals80 Жыл бұрын

    I struggled for a while understanding spanning tree protocol but this video cleared it all up. Makes total sense now. Thank you, David!

  • @G0nz0uk
    @G0nz0uk5 жыл бұрын

    Always nice to get a refresher on this.

  • @johnvardy9559
    @johnvardy95592 жыл бұрын

    that was , what im scrolling around after a long searching.Thank you David

  • @siddheshkadam1016
    @siddheshkadam10165 жыл бұрын

    Thanks David! This was simplest explanation I ever got

  • @drmanhattan225
    @drmanhattan2255 жыл бұрын

    Excellent question David. More please. :)

  • @manojsagar5978
    @manojsagar59782 жыл бұрын

    Have a nice day David bombal

  • @THEWolf-bz6ot
    @THEWolf-bz6ot2 жыл бұрын

    Thank you so much my mentor, David !!

  • @gbadri1
    @gbadri13 жыл бұрын

    Great class, I will need to watch it again.

  • @jose_tayshawn
    @jose_tayshawn7 ай бұрын

    Thank you for this. The PC trick really helped

  • @PraveenVas
    @PraveenVas5 жыл бұрын

    Nicely explained David. I did it myself before going through the answer and I only failed to identify the DP between S1 and S3. And the PC analogy is the best way to determine the ports.

  • @Ureyeuh
    @Ureyeuh5 жыл бұрын

    Insanely helpful!!!

  • @azam-khan
    @azam-khan5 жыл бұрын

    @David Bombal very helpful learning stp!

  • @configT
    @configT4 жыл бұрын

    Thank you for another great video. Waiting for your course on the new CCNP.

  • @learnTv1
    @learnTv12 жыл бұрын

    thank you for the very clear explanation

  • @marcschweiz
    @marcschweiz3 жыл бұрын

    Fantastic explanation!

  • @nasser_omar
    @nasser_omar5 жыл бұрын

    Very amazing video . Thanks a lot for all of this explanations and precise details Really Thanks 🌹🌹

  • @bartmazur5448
    @bartmazur54482 жыл бұрын

    Great lesson / thank you a lot !!!!!!! I catch up finally :)

  • @i.w9969
    @i.w99695 жыл бұрын

    hi David, great post! really appreciate it... I am also your Udemy student.. really hope you can post more these CCNA exam-like questions in the future. this type of videos are made up for what is missing in your Udemy class. thanks again

  • @ioanniskavrakis757
    @ioanniskavrakis7574 жыл бұрын

    Hi David, thanks for the explanation :D

  • @orleydoss3171
    @orleydoss31715 жыл бұрын

    Great content 👍

  • @gbadri1
    @gbadri13 жыл бұрын

    Excellent I see 444 liked and 0 Disliked - You won the GOLD STAR - David Bombal -

  • @davidbombal

    @davidbombal

    3 жыл бұрын

    lol... thank you.... typically always get someone who dislikes my videos :(

  • @mikethompson7406
    @mikethompson7406 Жыл бұрын

    Thank you for sharing the "put a computer in the middle of the segment" I'm going to use that for my CCNP because I seem to struggle with determining designated and blocking ports.

  • @nasbabar4499
    @nasbabar4499 Жыл бұрын

    Excellent presentation

  • @binsitt
    @binsitt4 жыл бұрын

    6:42 It would have been helpful to have known in advance, that there is such a thing as port priority, because i thought of bridge priority when I saw the video the first time. Anyways: Very well done. Clear language, illustrations and teaching. Thank you very much!

  • @benjaminwharton6264
    @benjaminwharton62643 жыл бұрын

    Thanks my dude

  • @minibigfoot7271
    @minibigfoot72714 жыл бұрын

    Thank You Sir

  • @elikelik3574
    @elikelik35745 жыл бұрын

    As soon as I saw this video before to start watching I liked it because I knew it would be interesting and helpful. Just know I finished watching it and I was right this video deserves LIKE. Especially I like the way to find DP =D Really it is the best way to find it. Thanks A lot, Mr. Bombal, wish You and your team all the best. You guys are awesome.

  • @davidbombal

    @davidbombal

    5 жыл бұрын

    Thank you! I really appreciate the positive comments and support.

  • @dextersbrain6242
    @dextersbrain62425 жыл бұрын

    It got more from this one too, as i mcd Go/3 from s2, the last spanning tree video gave me the light thats why i got the other ones right n mcd one

  • @FaeizMohammed
    @FaeizMohammed5 жыл бұрын

    Thank you Mr. David... I also looked at your courses on Udemy... :)

  • @chrisgast
    @chrisgast11 күн бұрын

    Essentially for the question, it's the ports that are furthest away from the root switch and with the lowest speed and the higher identifier, and not in that order.

  • @strgtr3531
    @strgtr35315 жыл бұрын

    Good

  • @zerkyl
    @zerkyl5 жыл бұрын

    This video is amazing, you explain the spanning tree so details. but i still have question. What if i want to send traffic from S3 to S5 is the spanning tree will be change automatically? Or the traffic data will going through the root bridge first? Anyway thank you for the video!

  • @davidbombal

    @davidbombal

    5 жыл бұрын

    Traffic in this example will have to traverse the root switch. That is why you want to use PVST and load share traffic across links.

  • @hennessy6996
    @hennessy69963 жыл бұрын

    HI, Very detail. Let me ask a question, would spanning-tree still block/stop the loop if another pair of type of switch has spanning-tree disabled. The loop is on their end, say a cross-connect between the two switches ?

  • @markganus1085
    @markganus1085 Жыл бұрын

    root bridge criteria: 1- priority (the lower the better) 2. mac (the lower the better)

  • @millos1509
    @millos15095 жыл бұрын

    Hi David, thanks for this great example. Could you please tell me which IOS image are you running for the switch? I been trying with c3725 but I cant see the role. Thanks.

  • @davidbombal

    @davidbombal

    5 жыл бұрын

    I'm using IOSvL2. There are a lot of issues and limitations using c3725 routers with Etherswitch modules. GNS3 recommends the use of IOSv for routers and IOSvL2 for switches.

  • @chaithanyakatari7896
    @chaithanyakatari78965 жыл бұрын

    Awesome videos quiz. How did you add those switch images in gns3 please help us am unable to add those switch images. Thanks in advance.

  • @davidbombal

    @davidbombal

    5 жыл бұрын

    Please watch this series of videos: kzread.info/head/PLhfrWIlLOoKNFP_e5xcx5e2GDJIgk3ep6

  • @deshanonline
    @deshanonline4 жыл бұрын

    👍🏼

  • @steveowen6228
    @steveowen62283 жыл бұрын

    So if switch 3 wants to directly communicate with switch 5 does it need to go through the root switch to get there or can it go direct?

  • @tylerd994
    @tylerd9945 ай бұрын

    If switches are transparent, how did I throw my back out racking one?

  • @scottstephenson7996
    @scottstephenson79965 жыл бұрын

    How did you change the MAC address?

  • @davidbombal

    @davidbombal

    5 жыл бұрын

    In GNS3. Right click on the switch and edit the settings. You can set the base MAC address in GNS3.

  • @mikeharper3593
    @mikeharper3593 Жыл бұрын

    Not sure if I understand the half cost of 2 on the DP

  • @nisnopwrd13
    @nisnopwrd135 жыл бұрын

    First

  • @GregInHouston2
    @GregInHouston22 жыл бұрын

    I am confused. At 9:00 minutes, you change the priority to 64. Cool! Except the change in priority is not reflected in the show spanning-tree table. I've rewatched this segment several times; the confusion is that you NEVER show the changed priority on S2. You muddied the waters here! Being consistent is a good thing! When identifying DP, you tell us that this Bridge ID is lower than this other Bridge ID. But the label says Priority. Thinking it over, there does seem to be issues with language. I'm guessing that it is regional. You say before switches, there were bridges. HUH??? I was taught that bridges connected different kinds of networks. The big one was the one that brought internet into your location. That network was not Ethernet; those distances were in miles and not feet. So you bridged to your Ethernet inside your location. Before switches, we used hubs. Hubs are simple devices that receive traffic on one port and broadcast it out all other ports. Every time! And the number of hops was important because each hop had a price as the inter packet spacing decreased and once that spacing was too small then communications ceased. Now, is that different from what you are calling a bridge? I do not understand why you would switch between ID and Priority. An ID tends to be unique! And often is required to be!!! In this set up, 3 switches have the same priority. To say that is their ID is silly! If I say S4 then you know which switch because that is unique. But if I say 8192 then which switch do I mean? There are 3 with that priority so that would make a bad ID. Thanks, I like the video. I just think you could be clearer. I confused someone yesterday because I kept referring to SFP transceivers as carriers and cartridges. Zero consistency on my part!

  • @thuggy67
    @thuggy67 Жыл бұрын

    What do you use to draw on screen?