Free CCNA | Spanning Tree Protocol (Part 2) | Day 21 | CCNA 200-301 Complete Course

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In this video, day 21 of my free CCNA 200-301 complete course, we will take a more detailed look at the operations of Spanning Tree Protocol (STP), specifically Cisco's Per-VLAN Spanning Tree Plus (PVST+).
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
0:35 Things we'll cover
2:04 STP Port States
3:25 STP Port States - Blocking
4:24 STP Port States - Listening
5:56 STP Port States - Learning
6:49 STP Port States - Forwarding
7:19 STP Port States Chart
7:45 STP Timers
8:25 STP Timers - Hello
9:17 STP Timers - Forward Delay
9:43 STP Timers - Max Age
13:02 STP BPDU (Wireshark packet capture)
17:18 STP Toolkit - Portfast
21:46 STP Toolkit - BPDU Guard
23:59 STP Toolkit - Root Guard/Loop Guard
25:31 STP Configuration - Mode
26:22 STP Configuration - Root Bridge
28:26 STP Load-Balancing
29:56 STP Quiz 7 (STP Load-Balancing)
32:11 STP Configuration - Port Cost/Priority
33:46 Things we covered
34:47 STP Quiz 8
36:07 STP Quiz 9
36:56 STP Quiz 10
37:46 Boson ExSim
#cisco #CCNA

[@maxwellchessdotcom6952]

When Jeremy has a birthday party, everyone keeps buying him Cisco industrial routers. When he unwraps it he pretends he never got one before to make you feel happy. After the party he places each atop the stack in his closet. You would think he sells them off, but actually he keeps them all safe and in perfect condition, and he knows the MAC address of each one.

[@ihusanw3157]

This is such a quality compliment 😂

[@THEGREENAPPLEKID]

how did you come up with this

[@anthonyomisorecanfixit]

Let’s actually get him a birthday present, or we donate after we pass our ccna exams

[@marcwharton4803]

@@anthonyomisorecanfixit I've now passed my CCIE written! All started with Jeremy's videos!

[@t0ucheg00dsir]

I died. The comments section of this course are hiiillaaariouusss

[@zakariabouguenara3728]

I've enabled a BPDU GUARD FOR MY STUDYING FROM ALL OTHER CCNA COURSES your are our ROOT TEACHER

[@JeremysITLab]

Haha, glad to hear that ;)

[@nit235]

Tip on taking notes: > You can create a book with modules as sections, and topics as sub-pages. > You can take screenshots of video on the go with shortcut (windows): Shift + Windows key + S. It will copy the screenshot to clipboard, use ctrl + v to paste it in notebook. I used to learn CCNA from INE, ITPROTV, etc, I stopped learning from them once I found out this Jeremy's channel. It helps me a lot ,thank you Jeremy. Not only for CCNA, we will need your help even after that, why not CCNP. KEEPING GOING BY HELPING, NEVER GIVING UP IS THE BEST WAY TO MAKE OTHER'S LIFE BETTER.

[@JeremysITLab]

Thank you Adam! And good tips!

[@nit235]

@@JeremysITLab Don't thank me! I didn't do anything comparing to what you are doing for us.

[@user-ul3ms1og2f]

can you share with me

[@asfandshah6683]

I’ve never commented on any youtube videos. But Hes so good and these lectures or so easy to learn that i felt guilty to not comment and support him through donation. Keep up mate. God bless you. 🇬🇧 🇵🇰

[@JeremysITLab]

Thank you Asfand!

[@emekaolele7206]

@@JeremysITLab can I get your personal email

[@imjinaah]

:D 0:01 Subscribe to Jeremy's IT Lab 0:36 Things we'll cover 2:04 Spanning Tree Port States 3:21 Blocking State 5:58 Learning State 6:51 Forwarding 7:20 Summary 7:47 Spanning Tree Timers 7:57 Hello 9:21 Forward Delay 9:44 Max Age 13:03 Spanning Tree BPDU 17:19 Optional Features of Spanning Tree (STP Toolkit) 17:31 Portfast 21:54 BPDU Guard 25:36 Spanning Tree Configuration 26:22 Configuring the primary root bridge 28:47 STP Load - Balancing 29:57 Load balancing quiz 32:13 Configure STP port settings 33:47 Things we covered 34:19 QUIZ! 37:42 BOSON

[@masonisbetter]

I've been working my way through the Wendell Odom cert guide but was looking for some lectures to supplement it, these videos do a great job. Thank you!

[@kneedeepinthedoomed]

I'm deeply grateful for your videos, Jeremy. Thank you!

[@JeremysITLab]

Thank you, I'm glad you like them :)

[@sumitsingh-ys6ew]

thank you jeremy, i can't find the words to tell you how much grateful am i : )

[@rotrose7531]

Thank you SO much for making STP so easy to understand

[@anthonyc19]

21:15 This actually happened to me before. Took all day to track it down. It was hidden behind a desk. Madness.

[@keasbeydave]

Wonderful in depth explanation of STP. The root port, designated port and especially the non-designated (blocking) port assignment process is broken down wonderfully.

[@JeremysITLab]

Thanks, David :)

[@toniatfort56]

Hi Jeremy. Thanks for the clear tutorial and easy to understand explanations. You make it seem easier

[@maxwellchessdotcom6952]

Great video Jeremy, a best of the best.

[@JeremysITLab]

Thanks :)

[@faizaussi352]

Many thanks to u Jeremy. U really are a blessing ❤

[@JeremysITLab]

Thank you Faiza :)

[@travelandexplorebd8962]

The more I have been watching your video the more I am being debt to you. Thanks, my professor.

[@sobayinichirinda5244]

Thanks Jeremy, you're the best tutor ever👏

[@littlewonder8641]

Thanks Jeremy for your awesome video material with abundant coverage. You are simply a great teacher with clear dispatch of knowledge. Please keep on your great job.

[@JeremysITLab]

Thanks Anil :)

[@kayitbilgileri]

Thank you for your great series of videos on Networking.

[@notunknown8275]

i just want to thank you for this great course and also for the subtitles is now more accuracy .

[@JeremysITLab]

Thanks for watching and commenting :)

[@jefferyaustin1571]

Hi Jeremy, I got CCNA 200-301, Volume I and II Official Cert Guide and completed chapter 6. Without watching your videos and other sources in advance, I could not grasp the concept from each chapter. I would have to say that you are the Best! Please write CCNA books; be the best Author!!!

[@JeremysITLab]

Glad to hear that! I may write a CCNA book, but that will be later in the future (you'll probably have you CCNA by then!)

[@susantadas2533]

undoubtedly the best teacher for ccna. even todd lammle wont deny.

[@tiary11]

hi Jeremy, excellent course, like usual :-)

[@JeremysITLab]

Thank you :)

[@stephenhu118]

Best teacher ever! Today I just bought the Boson ExSim + NetSim combo (via your short link of course 😀). The NetSim is awesome. Just a suggestion, it would be great if you could also add in each video's description which NetSim labs we can try to reenforce the knowledge we learned in that video.

[@moienanwari]

Amazing, thank you so much for all your efforts,

[@qiandavid8964]

Best CCNA Course I've Ever Seen

[@dmitrikazantsev3692]

Great work Jeremy!

[@Versesmith]

I was really struggling to understand this concept. But your videos made it simple for me to get it. Thaank you so much Jeremy. You are the bestttt

[@JeremysITLab]

Thanks :)

[@ActionzvanNeshie11]

Best tutor ever, thanks so much Jeremy

[@JeremysITLab]

Thank you!

[@AndreyPrestes]

Excellent class bro! Thank you

[@alexander1885x]

Really grateful for the videos!

[@st.clairjrharris4211]

Thank you Sir! I understand very easily with your videos.

[@hmoff1711]

it is also worth noting that the spanning-tree root secondary command sets a static value, unlike the primary command, which dynamically adjusts to the situation

[@-b777ljq3]

very good lecture, many thanks.

[@mkhlafa6809]

Thank you so much Jeremy! Great course

[@JeremysITLab]

Thank you :)

[@StevesITConsult]

The best. Thank You Jeremy.

[@JeremysITLab]

Thank you!

[@frederickmorgan6783]

Im loving this series.

[@JeremysITLab]

Thank you :)

[@bhuvaneshgifta351]

Really fantastic brief explanation about STP operation process. Thanks a lot.

[@JeremysITLab]

Thanks Bhuvanesh :)

[@creumakuzola4227]

Sir, your videos and your didactic are amazing. Thank u so much for making these videos!

[@JeremysITLab]

Thank you :)

[@iragenavital8899]

I like your video of CCNA, it is helping to understand networking

[@learningwithpussy]

Great work 👏👏

[@umairm8595]

Thanks Jeremy your videos are very helpful

[@JeremysITLab]

Thank you, I'm glad to hear that!

[@MAbdilahi]

hello, Jeremy thanks a lots for sharing this knowledge.

[@JeremysITLab]

Thank you for leaving a comment :)

[@yeaight4363]

@@JeremysITLab hi, can you please leave a download link for the your PowerPoint? I can read english better than listen. I am still trying to learn english thank you

[@konefine3626]

Best lecturer, thank you so much.

[@JeremysITLab]

Thank you! Always appreciate your support :)

[@youssefsalama663]

Thank you jeremy!

[@chris8206]

Awespme video , growth mindset !!!!

[@JeremysITLab]

Thanks Chris!

[@enastase8203]

Thanks again for your hard work..

[@JeremysITLab]

Thanks Emil, I appreciate your comment :)

[@Zenandchill1111]

hey Jeremy , thank you so much for your videos . I am new to networking and the way you explain the different protocols make it so easy to understand . I will continue to reference your videos . I'm scheduled to take my test and I cant wait to type in the comments I passed .

[@SesegB]

Have you passed your test?

[@Zenandchill1111]

Yes I passed 12-18-23 🎉🎉

[@suneeshgangadharan3827]

Thank you Jeremy

[@JeremysITLab]

Thanks for leaving a comment :)

[@user-mb4jh5lq1s]

I was right about the BOSON question it is all access Thank a billion for this material

[@JeremysITLab]

Thanks for watching ;)

[@Socrupus]

Thanks for YOUR help❤

[@shivanandpatil4193]

Thanks a lot. Great video s for CCNA certification. God bless you

[@JeremysITLab]

Thank you for your kind words :)

[@johnlomu]

Great job Jeremy, keep up the good work.

[@robotname438]

Aren't 4:24 and 12:47 contradicting each other? In 4:24 it is mentioned that only interfaces with designated or root ports may enter the listening or learning state and in 12:47 quote 'A blocking interface (i.e. non-designated) cannot move directly to forwarding state. It must go through the listening and learning states'. Thanks for the content btw.

[@wafa1203]

I think in general when the interface moves from blocking to forwarding it will have to move through listening and learning before becoming forwarding state and vice versa when interface moves from forwarding to blocking state it will have also move through listening and learning state

[@robotname438]

@@wafa1203 Hey, thanks for the answer. You are right about the blocking port moving to the listening and learning states, but the interfaces in forwarding can instantly move to blocking state. I guess that Jeremy when saying what he said in 4:24 meant that ports when they are just plugged in and converging that they have to go through listening first, and that they don't start off from blocking

[@jaleelvt6557]

well done , thank u so much

[@JeremysITLab]

Thank you Jaleel!

[@jacksonrabson263]

There's smile on my face now,thanx Mr Jeremy my Gog bress UUUUUUUUUUUUUUUUUUU

[@JeremysITLab]

Glad to put a smile on your face ;)

[@jacksonrabson263]

Thanks once again:

[@user-xy4dm5nj9p]

Great content

[@Islam.our.religion]

Thx Jeremy for the video

[@sainikileshreddy1327]

@jeremy first of all i would like to say that the videos are good and understandable. A request from my end, can you do a video on how to identify root port, designated /un-designated port.

[@JeremysITLab]

Check out Day 20 - STP Part 1, I talk about the whole process of identifying! From 31:20 I give a summary of the process: kzbin.info/www/bejne/oF7FfGB7e9lsmbs

[@aruizsilva]

Thanks a lot!

[@filipecasalribeiro4948]

Thank you sir!

[@JeremysITLab]

Thanks for watching, Filipe :)

[@Mari28am]

Hattsoff...very well explained....

[@JeremysITLab]

Thank you :)

[@murraymackenzie4313]

Hi Jeremy, brilliant content. Question: is there ever an incentive to not use BPDU Guard on a port if it is an available option? Thanks again.

[@katehyeeunjeong5230]

Hi Jeremy, Thank you for sharing this. I just wondering if i can have all of these slices. thank you

[@ikiyytours2320]

GOD BLESS YOU BRO.

[@DevOpsPulse]

thank you so much

[@JeremysITLab]

Thanks for watching and leaving a comment :)

[@johnvardy9559]

jeremy,your content is amazing just tell me how long are all videos?

[@tariqsubhan3775]

Sir, you deserve more but I can't do more than a comment, like, share and subscribe! I mean it...

[@3err0]

4:25 "after the blocking state". you mean when an interface was non designated and in blocking state, and when it suddenly becomes designated/root for some reason, then it goes to listeting state ? edit : it looks so ,yes. 12:04 also i would add at 11:40 - after ceasing to recieve hello bpdus OR receiving less superior bpdu it was receiving before

[@itnetworkjamannow905]

Many many thanks to u Sir,...

[@JeremysITLab]

Thanks for watching :)

[@anubhutisharma9632]

Thank u so much Sir

[@kayitbilgileri]

Hi, Jeremy! Thank you again for this great videos. I want to ask you a question about Loop Guard protection. How a port may malfunction in a way that may forward normal traffic but not BPDU's? Do BIDI optical transceiver may cause unidirectional link loops? If another switch will stop working in the topology, in between the switch that the port is moved into the STP loop-inconsistent blocking state with the root switch; do the switch with STP loop-inconsistent blocking state port will also go down, because it lost the connection from it's root port and it's other port is in loop-inconsistent blocking state? I also think that it might be to do a video or lab on the topic loop guard would be easier than to answer my questions 🙃 Thank you very much!

[@muhannedbelaid8849]

May god bless you bro. Thank you so much for giving us these information and devote your time to do these videos.

[@JeremysITLab]

Thank you Muhaned :)

[@Mohamed-te2hw]

Thank you so much for the videos. it's really benefit for me. Please, keep going

[@JeremysITLab]

Thank you Mohamed :)

[@sinosha]

At 32:00. On that topology, which two PCs are on VLAN10 and which ones are on VLAN20?

[@sujitsubba5289]

Very nice Jeremy ... I love your videos.. how many video still needed to complete the full course ?

[@JeremysITLab]

Thank you! I think the course is about 50% complete at the moment.

[@reemsaronalilio3499]

Loooove this video

[@Recken1]

I've had spanning tree issues with IP Phones where a user will plug in the 2nd port, meant for a PC, into another network jack at their desk. End hosts can cause STP issues.

[@syamtube123]

In 2007, I passed my CCNA exam. in 2023 I understand what is CCNA........... Lol😄

[@princeabdoulmadjidekpa620]

😂seriously

[@omid8719]

Hi Jermy, Thanks a lot for your help could you please help me with this question " Which configuration ensures that the switch is always the root for VLAN 750 1- Switch(config)#spanning-tree vlan 750 priority 0 2-Switch(config)#spanning-tree vlan 750 root primary

[@lhcunha1]

THANKS

[@SoulScavenger]

Hey Jeremy, I just practiced applying different settings to switches in my lab in Boson and the switch which I set priority of 0 for that vlan becomes the root bridge after I set root primary on the other switch. It looks like setting the switch priority of 0 supersedes whichever priority of the root primary switch. Long story short - the command to permanently set a switch as a root bridge is spanning-tree vlan xx priority 0, NOT spanning-tree vlan xx root primary.

[@JeremysITLab]

As explained in the video, the command sets the priority to 24576, or 4096 less than the current root. If the current root has a priority of 0, it can't set the priority to less than that so the command will fail.

[@julianwildauer]

Best tutor🤟

[@JeremysITLab]

Thanks Julian :)

[@naveenjoseph9727]

Hi Jeremy, Awesome videos! I got a doubt:: In 29:27 of the video, we are using VLAN2 for the topology. so wouldn't the Bridge Priority in each switch becomes 32770 ?. because Default bridge priority= 32768 and Extended System ID(VLAN ID) = 2. So TOTAL BRIDGE PRIORITY= BRIDGE PRIORITY + VLAN ID = 32768+2 = 32770. plz correct me if I am wrong.

[@nedatuaconta2431]

tysm

[@lodi8294]

Thank you! I finally catch up with your series. uhm if its not too much to ask, can the exsim quiz be a little bigger in font? Sometimes my internet is not good, so it wont load to a high quality. again, thank you so much :D

[@JeremysITLab]

Sure, I'll make it larger! I've already made the next couple videos, but after that you'll see the font is larger. Hopefully that helps!

[@lodi8294]

@@JeremysITLab Thank you very much!

[@hasanabdoun5845]

i want to complete this course ,you are only one who am i understand what he says and you explaining everything so good but we need to finish this course as soon as possible to be certified please

[@JeremysITLab]

Hi Hasan, I will try to finish it quickly, but high quality is more important than speed for me

[@Matthew25405]

I'm following the official Cisco Netacad course along this one and there is no mention of the PVST+/STP MAC addresses, so hopefully we don't need to memorize them for the exam

[@mohammadrahal9746]

Hi Jeremy, thanks alot for the comprehensive information. I have a question please , is it possible to disable the STP on one port ? Like taking one port completely out of the STP process

[@JeremysITLab]

I don't think it can be disabled on a per-port basis. But you can disable it on a per-VLAN basis, with this command: SW(config)# no spanning-tree vlan (vlan-id)

[@mohammadrahal9746]

@@JeremysITLab appreciated, thanks alot

[@ahmedabdelrahman3977]

Thanks 🙏

[@JeremysITLab]

I hope the video is helpful :)

[@arashamiri541]

Thanks

[@JeremysITLab]

Thank you :)

[@HazratJon]

Hello Jeremy, I am not able to understand why the "vlan" is always mentioned at 28:09 STP Configuration - Root Bridge, would you mind to tell which video I must watch to understand why the "vlan" is mentioned in STP Configuration

[@saibot293]

Great video very informative.. but now I have to create an account to get the flashcards?

[@JeremysITLab]

Not an account, I just send the Google Drive link via email.

[@hanihussein5543]

Great Videos, please get us some discounts on ExSim + NetSim as they are not cheap to buy , and I've watched some videos about Boson that tool is great.!

[@user-ru6hm1xq5x]

Hey Jeremy thank for the courses but what's the number of video not presented yet in the serie and I say it again thank you

[@user-ru6hm1xq5x]

Thank you *

[@JeremysITLab]

I think the course is about 50% complete, there will be many more videos!

[@zammanshafi2158]

Big fan Mr jeremy. Consider: a router is dhcp server for vlan (33 and 82) . Inter vlan routing is configured on Router int gig0/1.... How can i configure router int gig0/2 , so if gig0/1 goes down the gig0/2 become active for inter vlan routing

[@JeremysITLab]

You'd need to configure separate VRFs on R1 (split R1 into two routers). That's a more advanced topic.

[@naumanmustafa4245]

Hello, You mentioned at 18:04 that the port connected to the end host will be up after connection in 30 seconds, moving from listening to learning to forwarding, my question is why would it skip the blocking state (20 sec). What state the port achieves as soon as it starts up...? Looking forward for your reply.

[@JeremysITLab]

When a port first comes up it will move to the listening state. After that it will either move to learning then forwarding, or into the blocking state.

[@pabloguzman4010]

Thanks Jeremy your videos are really clear , thanks for all the time Be sure that I will share your videos, give you likes and subscribe , be safe ones more thanks

[@JeremysITLab]

Thank you Pablo!

[@TheGunguy461]

On the chart that appears at 7:45 in Max Age you have "BDPUs" instead of "BPDUs".

[@JeremysITLab]

Thanks for pointing that out 👍

[@kadhim0099]

thx a lot

[@JeremysITLab]

Thanks Kadhim!

[@erikcarlin9538]

🎯 Key Takeaways for quick navigation: 00:30 *🌲 Spanning Tree Port States and Timers* - Explanation of spanning tree port states: Blocking, Listening, Learning, and Forwarding. - Overview of the timers used in spanning tree protocol. - Clarification on the purpose and duration of each port state and timer. 07:49 *⏲️ Spanning Tree Timers* - Detailed explanation of spanning tree timers: Hello, Forward Delay, and Max Age. - Discussion on how these timers influence the behavior and convergence of spanning tree protocol. - Insights into the role of timers in preventing network loops and ensuring stability. 17:37 *🛠️ Optional Features of Spanning Tree* - Introduction to optional spanning tree features like Portfast and BPDU Guard. - Explanation of Portfast and its benefits for end-host connectivity. - Overview of BPDU Guard and its role in preventing loops by shutting down interfaces upon detecting BPDU traffic. 22:44 *🛡️ BPDU Guard and Portfast* - Understanding BPDU Guard and its functionality on portfast-enabled interfaces. - Enabling BPDU Guard globally requires a different command syntax than enabling it directly on interfaces. - BPDU Guard disables a port when a BPDU is received, preventing potential network issues. 24:08 *🌐 Optional Spanning Tree Features* - Root Guard prevents a switch from accepting a superior BPDU on a specific interface, maintaining spanning tree topology. - Loop Guard disables an interface if it stops receiving BPDUs, preventing unidirectional link issues. - While optional, knowing about Root Guard and Loop Guard is beneficial, although not explicitly required for the CCNA exam. 25:30 *🔄 Spanning Tree Mode and Root Bridge Configuration* - Overview of spanning tree mode options: MST, PVST, and Rapid-PVST. - Configuration steps to manually set the root bridge and secondary root bridge. - Explanation of how different VLANs can have different root bridges for load balancing purposes. 32:17 *⚙️ Spanning Tree Port Settings* - Explanation of spanning tree port settings: cost and port priority. - Cost determines the root port and is used in selecting designated and non-designated ports. - Port priority, configured in increments of 32, serves as the final tiebreaker in determining the root port. 34:43 *📝 Spanning Tree Quiz and Practice Questions* - Quiz questions covering spanning tree concepts learned in the video. - Practice question from Boson ExSim regarding PortFast configuration and STP port ID interpretation. - Importance of understanding the rationale behind correct and incorrect answers in practice exams like Boson ExSim. Made with HARPA AI