Free CCNA | VLANs (Part 3) | Day 18 | CCNA 200-301 Complete Course

[@ernestibrahim7532]

I will surely remember Mr Jeremy in my journey towards achieving CCNA

[@JeremysITLab]

Thank you, good luck!

[@kelecortez5834]

same here..., he started me down the path

[@chindianajones3742]

There was definitely a lot of information in the last 3 lectures on VLANs. I certainly struggled trying to wrap my head around all of the concepts and how they are implemented. A good idea to help you get used to this stuff is to build the network topology from the ground up (in packet tracer) and then do all of the activities in the labs from the past 3 days, manually configuring everything yourself. I found it frustrating trying to trouble shoot all the problems but it isa very good exercise.

[@monish4414]

Me too struggling with lot of concepts 😖😖

[@chindianajones3742]

@@monish4414 sorry to hear that haha. It's not easy stuff and in terms of volume, the amount of material we have to cover for the CCNA is more than a lot of college/university courses. What are you having trouble with specifically?

[@freakycookie101]

You're absolutely right. Its such an ocean of information and it can be difficult trying to just jam everything in. I definitely agree to configure it yourself as that will really cement the concepts into your brain.

[@Psouffle]

Where are you today with your CCNA studies? Is it interesting looking back at where you were struggling on just a while back? Your comment hits home for me right now, putting in the work right now.

[@stephenhu118]

cannot agree more. Practicing in this lab work helps a lot - especially when you cannot make it in the first try 🤣

[@JeremysITLab]

ERRATA: At 14:50 the switch won't flood the frame. The destination MAC of the frame it received was SW2's own MAC address. SW2 is functioning as a router (default gateway) in this case, so it has to look up the destination MAC for 192.168.1.1 (the PC) in its ARP table and add a new Ethernet header with the destination MAC address of the PC. If it doesn't know it, it will broadcast an ARP request. Apologies for the careless mistake.

[@Alberto.81]

Please bear with me. Actually this is good to me for clarify one point. A multilayer switch has access to mac-address table as much as routing tables correct? One of the two must be known right? Why broadcasting arp request, this is not clear to me. (and the broadcast arp request will be sent only in vlan 10 correct?)

[@JeremysITLab]

@@Alberto.81 Yes, multilayer switches have both a MAC address table and routing table. It broadcasts an ARP request in VLAN10 to learn the MAC address of the destination PC (192.168.1.1).

[@atishojha7186]

Why don't you pin this your comment? @@JeremysITLab

[@slsv19]

To anyone watching this video…BUY THE COURSE!! Is worth it!!! This teacher is a genius!! The best of the best! Ty Jeremy!! 🥇

[@t0ucheg00dsir]

Man Jeremy, the way you pause and then reveal information is gold. Makes me smile :)

[@sonnahdingsala2279]

I hail you J, this is the art of teaching. I was planning to take Neil Anderson CCNA Course to speed up my study and go in for the Exam before the end of the year but this video has changed my mind. No matter how long it takes, I am ready to stick with you right till the very end. I'm lucky so, so lucky to have met you at the beginning of my IT Career. You Teaching method is one of a kind and I'll never forget you as I ladder up in the IT world. Once again, Thank you sir!

[@JeremysITLab]

Thank you so much! By the way, I used Neil Anderson's course when I studied for my CCNA, I recommend it! But I'm glad you like my course :)

[@josephrocca8181]

My ADHD will only allow me to focus on Neil Anderson's accent.

[@ObaDayo]

Love how the current video provides even more clarification on concepts in the preceding video. Your videos are great sir, thank you!

[@maxwellchessdotcom6952]

"Hey baby, Jeremy is coming out with a new video this Saturday. Wanna watch it at my house?"

[@annexgroup6878]

"Yeah girl, let's network and chill"

[@stardustmotion]

wanna see jeremy talk about router on a stick? want to see it again?

[@bernargarcia7252]

@@stardustmotion😂😂😂

[@Aaron14LifeZZZ]

lol@@stardustmotion

[@anshulsingh9538]

@@stardustmotion 💀

[@JeremysITLab]

📚 Hope you all enjoy the Boson ExSim question at the end of today's quiz! I'll be featuring one ExSim question at the end of each lecture video from now on. If you want to get a copy of ExSim, click here: bit.ly/BosonCCNAExSim

[@TuanLe-uz2fb]

Oh that's great! Thank you

[@chrisrupa526]

Hi jeremy.can u provide this course with certificate so it can helpful for all in this lock down situation.plsssssssssss kindly reply me.

[@JeremysITLab]

The course will probably be finished by the end of this year. If you want the certification you'll have to take the CCNA exam (exam code 200-301) from Cisco!

[@Hossam_Refky]

isnt the correct answer for question 1 is a and b not b and c as configuring the IP address only doesn't mean the router will understand that there is a vlan

[@JeremysITLab]

@@Hossam_Refky Watch the 'Native VLAN on a Router' section of the video again (2:35 - 9:35), I explain it there. Basically, for the native VLAN the frames are not tagged with the VLAN ID, so the router doesn't need to know about the VLAN.

[@Tankovich777]

it is really a 100 % full fat lecture needs a lot of time to be digested , you made a great effort Mr.Jeremy

[@TheBeatOrigin]

Watched this 4 times and my head still hurts. Toughest vid so far

[@se7en_tv]

8th time's a charm buddy.

[@yushikaj.7164]

I thought i was the only one. It's 2am and i was stressing over this bc It's hard to grasp so many things at once in this video

[@leontrey777]

@@yushikaj.7164 ditto 🥲

[@ajayimorakinyo846]

You’re a blessing Jeremy, thank you again!

[@JeremysITLab]

Thanks, my pleasure!

[@cybrotech2193]

@@JeremysITLab may i have the full course jeremy for a payment, i need to complete this course ASAP during this lockdown. i cant without your tutorials, please

[@prashantkiratkar.5747]

You have an AWESOME TEACHING STYLE JEREMY! I don't think anyone can compete you for that! I do request you to keep your videos short however. I found the Day 17 & 18 lecture videos overwhelming as a lot of concepts were covered & thus i had a hard time remembering them. Today is day 4 & i am beginning to remember all the commands & most of the concepts. There are many like me & even those who aren't will still benefit from this. Thanks again for your marvellous videos! God Bless you!

[@JeremysITLab]

18 lectures in 4 days is quite a lot! I put a lot of information in them because I expect that you'll do one lecture per day, take notes, review those notes, do the practice lab, maybe make a lab in packet tracer yourself, review the flashcards, etc. If you do all of those things before moving on to the next lecture, I think it will be easier to remember all of the contents. Anyway, I'm glad the lectures are useful for you! Good luck!

[@prashantkiratkar.5747]

@@JeremysITLab Lol! I was talking about 2 lectures in 4 days, & not 18!

[@imjinaah]

Reviewer 0:34 Things we'll cover 2:35 Native VLAN on a router (ROAS) Wireshark Capture 5:26 SW1-R1 6:57 R1- SW2 8:05 Native VLAN on a router (ROAS) continuation 9:47 Layer 3 (Multilayer) Switches SVI (Switch Virtual Interfaces) 12:40 Sending traffic outside LAN with SVI 19:41 Inter-VLAN Routing via SVI 20:18 Problem that may be encountered 23:36 Things we covered 24:37 QUIZ!

[@maksudmuzaffarov]

Amazing, thank you for your help

[@imjinaah]

@@maksudmuzaffarov you're welcome! :) will be continuing with the time stamps again soon! :)

[@c7po457]

Great video, Jeremy! I'm happy for you that you seem to have gotten a sponsorship from Boson! I'll be picking the practice test from them.

[@JeremysITLab]

Thank you! I've been recommending them ever since I started my channel (since I used their products in my studies), now we're working together via my affiliate links and featuring their products in my videos. Definitely get ExSim before you go for the real thing!

[@c7po457]

@@JeremysITLab I will! That's a really cool feature that shows you why the answers are wrong and right

[@mundoin5583]

Hi Jeremy. Had my CCNA 200-301 exam yesterday and DTP and VTP and several other topics were in the exam. all in al, around 7 questions were from topics that are not supposed to be in the exam yet they were. also the vagueness of the questions are astonishing. My toddler son would have made questions that a human can read and understand better than them effffffs . :D

[@JeremysITLab]

Unfortunately that's to be expected from Cisco exams! How did you do on the exam?

[@mundoin5583]

@@JeremysITLab I failed , 817 points, my second shot is on Monday. I was burned out, started studying 3 months ago and it was just a bit too much on my mental health I think. And the test center wasnt helpful much made me wait almost 4 hours.

[@kurokubushi]

Still using your content in 2023! You're videos are awesome and like them a lot!

[@ninius82]

Thanks Jeremy! Your course is pure gold for every one who wants to start learning networking, not only to pass the exam.

[@samisaifoor]

You deserve a Salute because your teaching is the best and the hard work you did, is showing in the video. **

[@JeremysITLab]

Thank you, Sami!

[@wottowutzke]

Very Very important Course, I´m learning a lot,, God Blessed you and your Team...My best classes of CCNA preparation...It´s nice pretty good... Thanks a lot...

[@ebrahimmahyoub6993]

every day I get more knowledge out of these videos, So THANKS MR.JEREMY

[@JeremysITLab]

Thanks Ebrahim, glad to hear it ;)

[@ebrahimmahyoub6993]

@@JeremysITLab YOU ARE SO WELCOME, you deserve more

[@Alberto.81]

Thanks Jeremy for another great lesson! 👍👍👍.

[@JeremysITLab]

Thanks Alberto :)

[@marcin5272]

Well... Hard to say anything different than: Awesome! The examples are very detailed yet so easy to follow as many options of configuration are covered at one go. Fantastic material! Thank you Jeremy :)

[@JeremysITLab]

Thanks Marcin :)

[@backandtotheleft3157]

If i hear you swallow, your tongue touching your molars, or you breathe in through your nose ONE more friggin time................I'm gonna continue watching all your videos because it's the best on the internet.

[@verumignis4778]

ooooh my it is so tempting to make my own ccna practice exam, would be a project to learn topics and it would mean people could stop paying boson a hundred quid for some practice exams.

[@jasonliu9744]

Jeremy, you are working so hard, thanks for updating.

[@JeremysITLab]

Thanks Jason!

[@samucancld]

amazing implementation on wireshark, u are a hell of a teacher

[@JeremysITLab]

Thanks Samuel :)

[@greeneyes867]

HI Jeremy. i would like to thank you for your videos. They are really helpful. May i know when will you upload the rest of the videos. you are really amazing and so addicted to your way of presenting the CCNA

[@JeremysITLab]

I upload each video when I finish making it, usually one video per week.

[@yeo1397]

Thank you very much for these VLAN Tutorials! I understand it now, it took me awhile.

[@JeremysITLab]

Nice! Glad to hear that :)

[@wolodymyrpidluznyj181]

Simply the best online training. Thank you Jeremy.

[@JeremysITLab]

Thank you :)

[@mohamedabdulle6250]

Course content and delivery both are wonderful.

[@JeremysITLab]

Thank you :)

[@dimitrie17]

question: WHAT IS THE MAC ADDRESS OF AN SVI??? A host must know it in order to send traffic to a host in a different LAN. If a host sends an ARP request of its default gateway, which is an SVI, what information will it receive?

[@4EntertainmentOnly]

I also did all your previous labs with Gigabit interfaces because it's 1000 speeds versus the 100

[@rtb7926]

Thank you for introducing the BOSON questions in the Quiz! Will be diving deeper into that

[@CosmicBrain21]

Cheers Jeremy. I'm loving your CCNA course and I've almost caught up with the latest video. Out of curiosity, how many more videos will you be posting to cover off the rest of the CCNA? Just as a rough guide, are we 40% 60% of the way there etc. All the best!

[@JeremysITLab]

Probably about 40-50% at the moment!

[@89OptimusPrime]

excellent video, thx for your dedication on this material, amazing teacher!!

[@Fawazkutti]

your teaching flow is amazing bro .

[@JeremysITLab]

Thank you! :)

[@networkingandcybersecurity1928]

Thank you very much MrJeremy. Those videos are well explanatory. Pls can you upload CCNA security too? If you can I will be grateful. Thanks Mr Jeremy 👍

[@JeremysITLab]

CCNA Security is a retired certification! Now there is only one 'CCNA'.

[@rotrose7531]

Thank you very much, the tutorials are so engaging that even a hard topic like this becomes interesting, thank you

[@maxwellsedeman8724]

Hi Jeremy. Like many others, am I extremely thankful for people like you who offer such high quality and information rich videos for free. You have no idea how much it means for someone like me, with the current life circumstances I find myself in. SO THANK YOU JEREMY!!! With that being said, I'm struggling to understand option 2 to setup native VLAN on ROAS. When you used example at 08:19 of the video, do one only configure one of the known VLANs with a native vlan on the one physical interface, and keep the rest of the subinterfaces as is? your response would be immensely appreciated. PS. I'm in awe of the work you are doing.

[@mhere7595]

Thanks for your amazing content! What happens to untagged traffic on a trunk port if the native Vlan is disabled?

[@JeremysITLab]

The native VLAN can't be disabled! Just assigned to an unused VLAN.

[@nasirchowdhury94]

Much appreciated your hard work Jeremy!

[@JeremysITLab]

Thanks Nasir!

[@paimanpaiman9743]

Love you Jeremy for explaining it in such an easy to understand language, god bless you 😍

[@andybalding3573]

Hi Jeremy. Thank you for your dedication and the effort you put in to this videos. It shows a lot in the way you explain things. I have been following your videos from the start (since the lockdown) and must say, i have learnt a lot. My question would be, all the PC's are pinging each other fine but can not access the internet. Where should my focus be ? Thanks once again.

[@JeremysITLab]

You'll need to configure routes on the multilayer switch and the router for it to work, the switch has to know about the destination on the Internet you want to reach, and the router has to know about both the destination on the Internet and the internal networks.

[@andybalding3573]

Thank you.

[@johnmikky9517]

Wow...Thank you so much Jeremy for this..You are amazing. Please how many more videos do we have left for this course cos some of us are actually hoping to take our cert exams after your videos on this course.From October last year till now everyday video you 've uploaded is just awesome and keeps on getting better Thank you

[@JeremysITLab]

I don't know how many videos are left, but I guess it will be about 50 'days' in total.

[@johnwilliam2381]

@@JeremysITLab Please i would like to know if these series would be completed by 1st half of the year. Thank you

[@johnmikky9517]

ow okay. great today's own is day 18, so I guess that will extend to December 2020 or January 2021 before we reach day 50 comparing the amount of videos on this course from November. Thank you so much Jeremy for the heads up at least I can prepare my mind towards that.

[@tinashemadangure8140]

Great material never new the command or used it R1(config)# default interface g0/0 😅to set to default configuration

[@jamesharris1613]

Awesome video. I like the addition of the Boson ExSIM bonus question. I'll definitely be purchasing the Boson exams as I get closer to finishing your course.

[@jaygarcia8453]

Thank You Jeremy, I enjoy your training videos, I learned a lot .

[@JeremysITLab]

Thanks, Jay :)

[@NETWizzJbirk]

no autostate can also be a useful command to override the requirement of having an up/up interface.

[@فردوسمقبول]

Thank u jeremy Eagerly waiting for this 3rd part of vlan God bless u

[@JeremysITLab]

Thank you!

[@NetworkingwithHamza]

I started CCNA preparation. Came to this point in regular 18 days but then I just couldn't continue. After 25 days of struggle. I re started it, I revised and re listened to all the videos till this point in 4 days. I bought Boson Ex Sim yesterday and I'm hoping to keep the pace to take exam in start of April Max. Let's see where it takes me

[@ui.steven]

Can we connectm? Hamza....i need a study buddy

[@manikandanrajkumar6695]

@@ui.steven hey man, I'm too preparing would you like to join?

[@Bowled.]

@@manikandanrajkumar6695 bro tamil?

[@manikandanrajkumar6695]

@@Bowled. yeah bro

[@Bowled.]

@@manikandanrajkumar6695 CCNA completed ah bro?

[@ernestibrahim7532]

I am so grateful Mr Jeremy

[@JeremysITLab]

Thanks for watching :)

[@shlomiunger3518]

Amazing VLAN Lessons!!! Thanks so much!

[@JeremysITLab]

Thanks Shlomi :)

[@rajeshjsaharan]

Thank you so much Love from 🇮🇳

[@JeremysITLab]

Thanks Rajesh!

[@_Akbaralam]

VLAN has really took my time....

[@ranjanadissanayaka5390]

yess...one more topic covered. Thanks Jeremy.😀

[@singh_ispooja]

Your teaching method is just amazing❤. I have huge respect for you Jeremy💫!!

[@chandankumarsingh6027]

I will join membership soon.I am expecting same series of video for Firewall.

[@JeremysITLab]

Thank you, I might cover firewalls someday.

[@andybalding3573]

Hi Jeremy, I also wanted to mention on the Packet Tracer. When you enter sh ip route, i do not see the 'L' local route. All i see is 'C' the networks.

[@JeremysITLab]

Yeah that's a packet tracer problem, I mention it in the next video (day 18 lab)

[@jawherhadjsghaier1187]

the best course you can find ever .thank you very much . is there any other couses for other certifications like ccnp or any other security certification ??

[@JeremysITLab]

I don't know! This is my only course

[@izukumidoriy633]

Happy birthday🎉 Jeremy

[@risikesy5243]

Hi jimmy thank you for your videos which are very helpful.. could you tell me how many more videos will tak to complete course...

[@JeremysITLab]

I guess there will be about 50 days in total.

[@varadharajanr3118]

Hello sir it's really Nice to video's series ... Thanks for you 👍 Then how many videos to topic balanced?

[@JeremysITLab]

Thank you! I think the course will be about 50 days in total.

[@hawkarkhalil6472]

Thank you so much Jeremy for your amazing work!! Would it be possible to share this courses slides with us? I would like to have them to review after watching the videos. Thank you

[@JeremysITLab]

Hi Hawkar, I currently don't provide the slides, but I will prepare them and share them later.

[@hawkarkhalil6472]

@@JeremysITLab Thanks Jeremy. Do you know when you can share them?

[@kelecortez5834]

Aloha J & another great vid. !!! Im still undecided on ExSim or Alpha Prep recommended by neil ......his is $45 .....just might have to get both

[@JeremysITLab]

Mahalo! If you can, both is definitely the best! I tried both when studying for my CCNA, and in my opinion Boson is a much better product which is why I feel confident about promoting them in all of my videos. AlphaPrep is still good, but if you can only get one I recommend Boson.

[@rajivkothale]

Thanks Jeremy. You are doing a great job by sharing such informative videos and helping understand the core concepts with ease. Keep up the good work👍

[@adjaoudboudjema]

Merci pour la vidéo et les explications, please what's the difference between IP routing and the command sdm prefer lanbase?

[@bb1234697]

Thank you very much Jeremy!! You are the GOAT!! 🐐🐐👑👑👑

[@GhGh-xc9lp]

The best series ever!!!

[@JeremysITLab]

Than you!

[@GhGh-xc9lp]

@@JeremysITLab we thank you for your time and for the good work you are doing

[@tariqsubhan3775]

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

[@jaromamatr1346]

Thank you a lot, Jeremy !

[@JeremysITLab]

Thanks for your support, Jaro :)

[@Oomtet]

thank isnt enough..wish is meet you one day....hopefully as a certified Network engineer...

[@diwaskhadka1534]

I would like to know about the advantages of using native VLAN on ROAS in an organization or office network.

[@-b777ljq3]

very very very good, thanks Jeremy for the great job

[@baderalotibi9913]

Thanks for everything Jeremy!

[@pooyanlali7961]

Thank you for these great videos! I just have a question, if VTP is not being used in modern networks, then how do we configure VLANs on all switches in large-scale networks?

[@zakariabouguenara3728]

The best ever thanks a million

[@athifali3130]

Hey Jeremy thanks for the video. I have a request for you. In the next video can you please show as all the necessary configurations and connections of a multi layer switch in a packet tracer for the practising lab .

[@JeremysITLab]

As always, I will do a packet tracer practice lab covering the material in this video

[@johnwilliam2381]

Thanks Jeremy for the update.

[@JeremysITLab]

Thanks John :)

[@09alexandr]

Hello Jeremy! Thank you for so great lessons! I have one question. If it would be a real topology, how should we configure SW1 G0/1 and G0/2 interfaces in case when vlan 10 is configured like native vlan on devices?

[@JeremysITLab]

Good question! You don't have to do any different configurations. The native VLAN only applies to trunk ports, it is the VLAN that isn't tagged with a VLAN ID over the trunk. However, G0/1 and G0/2 on SW1 are access ports. Traffic sent/received on access ports is never tagged with a VLAN ID. Because access ports only belong to a single VLAN, there is no need to tag traffic with the VLAN ID to know which VLAN it belongs to.

[@johnlomu]

Great job Jeremy, keep up the good work.

[@jstash125]

14:50 The frame itself would not be flooded to all interfaces in Vlan 10, but an ARP request would be, right? I even recreated this lab and cleared the mac address table of Switch2 and tested this with a ping and came up with this result.

[@JeremysITLab]

Yes, you are correct. Careless mistake on my part. The switch is functioning as a router (default gateway), so it has to look up the destination MAC in its ARP table. If it doesn't know it, it will send an ARP request.

[@jstash125]

@@JeremysITLab Thank you for the reply! I really, really appreciate all the work you have put into this series. I have learned so much.

[@FatiSouri-d3r]

17:33 Why we didn’t use the NO SHUTDOWN command when we configured the router’s interface ?

[@rolan2dr]

Awesome. Thank you for the content.

[@JeremysITLab]

Thanks Rolando!

[@LarrySoliman]

love the shade on the icons! LOL!

[@JeremysITLab]

Just telling it like it is. Cisco gotta step up their icon game!

[@maxwellchessdotcom6952]

When they made Jeremy, they broke the mold. He's pure IT love.

[@GG-xt7mq]

If we are already using a multilayer switch, why did we use a router to connect to the cloud, can we directly connect to cloud from multilayer switch ?

[@JeremysITLab]

Multilayer switches typically don't support features like NAT, which is usually needed to access the internet. NAT is covered later in the course!

[@HemanthJabalpuri]

I also got this question. Aside Jeremy's answer, Multilayer switch doesn't support interfaces other than Ethernet. In Lab, video Jeremy showed connection using Fiber WAN connection via SFP port which is not supported by Multilayer Switch. If we have Serial WAN, same issue (no serial interface in Multilayer switch).

[@zafar81883]

Dear sir could you please explain CCNA security and automaton of new CCNA syllabus

[@JeremysITLab]

zafar81883 Yes, this will be a complete course covering all topics in the syllabus.

[@zafar81883]

@@JeremysITLab you are so kind god bless you..

[@maircosta422]

when u configure the native on the routers physical int g0/0, why do you use that specific ip address?

[@manikandanrajkumar6695]

that's the ip address which is not in any of the subnets in vlan 10, 20 and 30. So that if the router receives a request for that address it will forward it to the default route.

[@janearltocson2965]

Sir, in this video, it is set to the default VLAN of 1. Should I also practice changing the native VLAN to an unused VLAN?

[@SincereDoper]

For quiz question 3, if you were on a default switch interface and you just typed "no switchport" would that configure it to be a routed port? I thought earlier in the video you said you needed to use "ip routing" for SVI to work. Kind of a confusing question, as both answers A and C are technically correct unless I'm missing something. Would love a quick explanation at what I'm not understanding if anyone knows. Thanks!

[@JeremysITLab]

The 'ip routing' command enables IP routing on the switch - it allows the switch to forward packets between networks like a router. It doesn't make any interface become a routed port. 'no switchport' converts a layer 2 switch port into a routed port, that functions like a router's interface.

[@parker73724]

This might be explained later but is there any way to use multiple trunk ports between a router and switch to load balance the traffic between them?

[@jasonmedina8625]

Jeremy I am immensely enjoying your videos, but I'm concerned that I might have missed one or two of the labs or Anki links. is there a central location for these to make finding them easier? Thanks.

[@JeremysITLab]

Here's the Google Drive folder: drive.google.com/drive/folders/1kQVMEUDN0byK39rceEXyb6bQcGu4dIJA?usp=sharing

[@gerryvalenzuela9158]

Hi Jeremy! Do you have to create the Vlan in a Distribution Switch ? I’m talking about when you have a different design hierarchy like access switches= distribution switches= core switches.... I know you do have to create the SVIs in the distribution Switch for intervlan routing to the Access switches but basically that is my question. Do you have to create the Vlan in distribution switch just like you have to do on access switches ? I’m talking about this command for an example. Switch# config t Switch# vlan 10 Switch(config-vlan)# name Engineering Switch(config-vlan)#end

[@JeremysITLab]

Yes, you have to make sure the VLAN exists on the switch! Always check with 'show vlan brief' to see which VLANs exist on the switch.

[@revanmardagh]

What application do you use to make graphs of networks in the video? (an example would be the graph at 15:29) btw, love the videos! your ability to teach is unlike anyone else! :D

[@idowuola5397]

Thanks, Jeremy for the videos, but my question is this, concerning the layer 3 switch you just introduced into the topology, I think it should come in as a default setting device because I noticed you checked the show run and you still have previous switch (SW2) configuration. I think it should come in a clean slate and then configure the necessary interfaces. Thanks!

[@JeremysITLab]

Hi! What’s your question?

[@idowuola5397]

@@JeremysITLab The layer 3 switch you introduced. As I said I thought it should be a default switch, meaning without any configuration because when you prompt # show run “ I found out that is being configured with the previous SW2. Because when I tried using it, the same show run prompt /command I didn't see any configuration, so I was left in the dark on what to do next.

[@markahramtacud8612]

Thank you for wonderful and educational tutorial. I follow along with your network topology and do some practice lab using packet tracer but I am having problem pinging VLAN 20 HR PC and VLAN 30 SALES PC only VLAN 10 PC's. Thanks for the Help!

[@JeremysITLab]

Did you configure the correct default gateway address on each PC?

[@suneeshgangadharan3827]

Thank You Jeremy

[@JeremysITLab]

Thanks Suneesh!

[@Amiri-Nofel]

Q: How does the SVI table know what type of encapsulation to use when forwarding VLAN traffic? (dot1q or SLI)? since you did not configure it Jeremey.

[@Enisa-cc1pq]

Hello Jeremy, Thank you so much for these free videos most appreciated! Got a question, If you set the native vlan on the router do you need to set it on Switch 1 and Switch 2?

[@youssefzero]

Hello Jeremy, first I would like to thank you for the great effort that you put in your videos. but still have a question regarding VLAN, if the access ports are "untagged" ports, does this mean that it will not have 802.1q tag? so how the switch will broadcast a frame ONLY to access ports having the same VLANs (and not ALL ports)?!

[@JeremysITLab]

Good question, and important to understand! Yes, 802.1q (or ISL) tags are only used on trunk connections. They are used to tell other switches 'this frame sent I sent belongs to VLAN X'. However, the switch already knows which VLAN all of its access ports are in. If interface F0/1 is in VLAN 22 and the switch receives a broadcast frame on F0/1, it will only broadcast it to ports in VLAN 22 (and trunks that permit VLAN 22, in which case it will tag the frame so the other switch knows it is in VLAN 22) because it knows 'F0/1 is in VLAN 22'. There's no need for the device that sent the broadcast (for example a PC connected to F0/1) to tag it in VLAN 22. Actually, the PCs in VLAN 22, or any other VLAN, are totally unaware of what VLAN they are in. Only the switches think about that.

[@youssefzero]

@@JeremysITLab thank you so much for the explanation!