CCNP ENCOR // Spanning Tree Protocol (STP) Algorithm // ENCOR 350-401 Complete Course

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Free CCNP ENCOR 350-401 Flashcard/Labs: jitl.jp/encor-files
📚ENCOR ExSim: jitl.jp/encor-exsim
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This video covers the algorithm Spanning Tree Protocol (STP) uses to decide port roles and prevent layer 2 loops.
In this FREE and COMPLETE course for CCNP ENCOR 350-401, you will find lecture videos covering all topics in the Cisco official exam topics list, end-of-video quizzes to test your knowledge, flashcards to review, and practice labs to get hands-on experience. All you need in a single course, for free!
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0:00 Introduction
0:37 Things we'll cover
1:04 The need for STP
2:16 What does STP do?
3:40 The STP Algorithm
5:36 Root Bridge election
10:17 Root Port selection
13:37 Root Port selection: root cost
15:01 Root Port selection: lowest neighbor BID
15:53 Root Port selection: lowest neighbor port ID
17:47 Root Port selection: lowest local port ID
19:17 Designated Port selection
20:38 Designated Port selection: lowest root cost
21:51 Designated Port selection: lowest BID
22:32 Things we covered
23:02 Quiz
25:09 Thank you to supporters
#ccnp #encor

Пікірлер: 34

@xinyin1850 22 күн бұрын

The lecture is high-quality , precisely clear, straight forward to the point. It saves me from being confused when only reading the CCNP textbook again and again. The best tutor for CCNA and CCNP.

@pastelek3 Жыл бұрын

GOAT is back 🐐

@rawadelhachem1346 Жыл бұрын

I never thought i would be excited to study something before ur content is gold 🥇

@Hypocrisy.Allergic Жыл бұрын

the goat is back, please post more often, it is the only content on youtube i look forward to

@Wetheuntitled Жыл бұрын

I just took and passed my CCNA thank you so much jeremy 🎉🎉🎉

@moulay.elmustaphatahir Жыл бұрын

Thank you very much Jeremy

@stefanraresradu2309 Жыл бұрын

Hubs are devices that operate at 10/100 Mbps, which means that when a switchport connects to a hub it will have a speed of 10/100 (depending on the hub) => bandwidth value of 10/100 which means an STP cost of 19 instead of 4. So, in the first topology for instance, SW1s cost on G0/0 and G0/1 would be 19

@JeremysITLab 10 ай бұрын

1-gig hubs are rare, but they do exist! I have a Japanese one that I use for labs occasionally

@stefanraresradu2309 10 ай бұрын

@@JeremysITLab Well, it's Japan so, anything is possible :)

@JeremysITLab 10 ай бұрын

@@stefanraresradu2309 Yet they still use fax machines and other ancient technology!

@khurramaziz2430 8 ай бұрын

Hi Jeremy ! Awesome content as always 5:35 => Please confirm for *Root port selection:* • Lowest root cost • Lowest neighbor BID • Lowest neighbor port ID • Lowest local port ID or • Lowest neighbour port ID

@jrabano8688 Жыл бұрын

Thanks Jeremy. Your videos make me learn this each topic clearly. Please complete series ASAP so I can get my CCNP ASAP. j/k but hurry up please, waited 7 months for this.

@QuantomMindfulness Ай бұрын

Jeremy, for the quiz question, for SW1 wouldn't the root port be G0/1 since its neighbor port is lower? If not, then SW1 wouldn't be receiving any traffic right? Please help, and thank you.

@ryanadauto3705 4 ай бұрын

Jeremy can you please explain how did you set the root costs of the SW ? it's a bit tricky . Hope you can help :D

@dustcore 9 ай бұрын

👍🏾 👌🏾 👍🏾

@yeayea8334 Жыл бұрын

Hi Jeremy, did you write a book? I received an email about that great news, but the link has expired. So I started searching the book on Google and I found the title, Acing the CCNA exam, but I don’t understand if it’s an ebook or a printed book

@mustafarasool7591 Жыл бұрын

Hello jeremy , could u tell me please what type of labs you faced when u passed the encore exam ?

@NetTechies11 Жыл бұрын

netflow (simple lab), SPAN, EEM applet

@alistar4551 4 ай бұрын

when did this course finished

@user-kc2wc7fc2f 9 күн бұрын

I wish you would have explain Root Path Cost more and how they accumulate with these lessons. It would have save me from a lot of confusion or maybe im just an idiot .

@JeremysITLab 9 күн бұрын

11:06

@user-kc2wc7fc2f 9 күн бұрын

@@JeremysITLab thanks Jeremy you are tremendous help .I have adhd and miss these small details from time to time.

@faheemmirkar658 Жыл бұрын

Hey Jeremy Please complete this series ASAP Waiting from long time

@praisebetoyourCreator Жыл бұрын

sorry to bother you but how far did u come with this course? is it in the mid or somewhere in the end or still in beginning ?

@jacobm1190 Жыл бұрын

I would say this is just the beginning

@JakesTechWWW Жыл бұрын

CCNA was nearly 120 videos, id assume this will be longer

@ouroboroCat 5 ай бұрын

On the question, i don't see the root cost for the ports listed anywhere? Why is G0/0 on SW1 the root port? Without seeing any root costs displayed, it would seem like F0/3 on SW1 would be the root port because it's only one layer 2 hop away and not across a hub! Please reply because this is not making any sense!!

@bytegga8623 5 ай бұрын

I think its because F0/3 is a fast ethernet connection, so its cost is 19. Versus G0/0 on Sw1, which when added to the root cost of Sw3 and Sw4 is 12 (Sw1 root cost + Sw3 root cost + Sw4 root cost). So it becomes the root port because it has the lowest cost + lowest port number

@ryanadauto3705 4 ай бұрын

Yes, im on the same, i think f0/3 is the Root, if jeremy would explain the root cost for each interface of sw1 would be superclear

@boros123 Жыл бұрын

Hey Jeremy, please make a video on LISP soon.

@gwojcieszczuk 10 ай бұрын

At 25:06, there's mistake on SW1 in selection of Root Port. Gi0/1 (SW1) should be Root port, because "lowest neighbor port ID". I built this in eveng to verify. SW1: gi0/0(ALT-BLK), gi0/1(Root,FWD). SW3: gi0/0 (Desg,FWD), gi0/1(Desg,FWD).

@JeremysITLab 10 ай бұрын

Are you sure you connected them to a hub? The topology you just described is a layer-2 loop: both of SW3's ports are forwarding, even though they're connected to the same hub. I just tested on physical Cisco switches, and the topology in this video is correct.

@gwojcieszczuk 10 ай бұрын

@@JeremysITLab You're correct. Apologizes. I completely missed that bridge between SW1 and SW3. In Eveng, i can't really use Hub, but it seems un-managed bridge does the trick, with the benefit of having full duplex instead of half-duplex.

@michaelbeukes4807 Жыл бұрын

is it fine to use the config like this spanning-tree mode rapid-pvst spanning-tree extend system-id no spanning-tree vlan 121-122,197-199,400-499,501-503,505-516,518-533,535-538 no spanning-tree vlan 540-541,544-559,561-573,575,577-581,584-585,587,589-591 no spanning-tree vlan 594-619,621-731,733-738,740-797,799-899 spanning-tree vlan 58,121,196,211-212,500,504,534,539,542-543 priority 24576 spanning-tree vlan 574,576,582-583,586,592-593,798 priority 24576 or should I completely remove these "no spanning tree" and "spanning tree" and just run RPVST on all VLANS?