Multicast Explained in 5 Minutes | CCIE Journey for Week 6-12-2020

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  • เผยแพร่เมื่อ 23 ธ.ค. 2024

ความคิดเห็น • 99

  • @lawlade
    @lawlade 2 ปีที่แล้ว +76

    explanation begins @1:53

    • @DaveThomson
      @DaveThomson หลายเดือนก่อน +2

      yeah, could of been explained in 3 minutes not 5

    • @lawlade
      @lawlade หลายเดือนก่อน

      @DaveThomson totally agree

  • @mnfchen
    @mnfchen 3 ปีที่แล้ว +3

    Explanation starts at 1:54.

  • @edwelthrope9197
    @edwelthrope9197 2 ปีที่แล้ว +19

    Why is the video 9 minutes

  • @etutorshop
    @etutorshop 3 ปีที่แล้ว +1

    Viewers please cut to the chase and jump to 1:52 to start with multicast :-)

  • @joeford8035
    @joeford8035 3 ปีที่แล้ว +5

    My understanding is that IGMP is a layer 3 protocol (network layer) not a layer 2 protocol, unlike IGMP snooping.

  • @chandruonmuzic
    @chandruonmuzic 2 ปีที่แล้ว +1

    For many years i am looking for this one. So short n sweet. Thanks a lot and all the best for your ccie

  • @huzaifasajid6830
    @huzaifasajid6830 3 ปีที่แล้ว +1

    Skip to 1:53 to save time.

  • @mmccrack3n
    @mmccrack3n 2 ปีที่แล้ว

    The switch flood and how snooping works is good to know. Thanks.

  • @peterhinton
    @peterhinton 6 หลายเดือนก่อน +4

    It takes you 2 minutes to explain that you’re about to cover Multicast in 5 minutes? See the problem?

  • @taokichavez9319
    @taokichavez9319 9 หลายเดือนก่อน +2

    almost 2 mins to get to the point... nice!

  • @davidjohnson8930
    @davidjohnson8930 ปีที่แล้ว +1

    IGMP is layer 3. Why are you saying it's layer 2? Did you mean IGMP snooping which is layer 2?

    • @donedeal51
      @donedeal51 7 หลายเดือนก่อน

      Good call out

  • @HandOfGilgamesh
    @HandOfGilgamesh หลายเดือนก่อน

    Question please - I don't get it multicast signal is sent to multiple destinations, when the stream is live, does the traffic go all over the internet trying to find hosts/routers listening to the port/IP of the service? sounds like alot of traffic - this is most likely sacrilige question, but I come from CCNA, trying to understand Class D Addressing, and am deffo missing something. thank you.

  • @HollowGrey
    @HollowGrey 11 หลายเดือนก่อน +1

    Wow.. thank you! I am encountering multicast at work and this crash course helped me so much. Separating multicast into the L2 and L3 parts made it so much easier to digest. Also, now I understand how IGMP snooping plays into multicast.

  • @lohphat
    @lohphat 2 ปีที่แล้ว

    How do L2 switches know to replicate packets to ports? Do L2 switches need to be upgraded for them to handle 33-33-xx-xx-xx-xx frames correctly?
    Does IPv6 MC membership operate on a voluntary membership basis or do routers and switches need to maintain membership states to know where to send subscribed streams?

  • @MegaFiredon
    @MegaFiredon 3 ปีที่แล้ว

    Hi i need to learn how to do a multicast and what i need to do It i have a TV Station can you please show us a step by step guide of how to set It up and what is needed?

  • @BioBrain
    @BioBrain 4 ปีที่แล้ว +1

    start at 1:55

  • @gregorysmith4518
    @gregorysmith4518 3 ปีที่แล้ว

    I'm battling to keep Apple Airplay connected to any device for longer than 15 mins, any advise? between 8-15 mins our stream dies and we have to try reconnect, sometimes warm rebooting the devices works , sometimes we have to remove the power and then connect. I have enabled IP Helper and mDNS and done the relevant WLAN to WLAN rules to get connection.

  • @dkoxperiakoziukov3808
    @dkoxperiakoziukov3808 3 ปีที่แล้ว

    Thanks for the good explanation.
    May I ask you a question?
    I have a streamer running on my router OS embedded. The stream is coming over the udp to the multicast address.
    When I route the stream to my internal router interface (where PC is connected) VLC is successfully connecting and playing video.
    But I need to stream outside and when I rout the stream to the external interface I see the multicast traffic running (with tcpdump), but my VLC on my local PC doesn't connect anymore.
    My provider told me they have IGMP and PIM set and running.
    Unfortunately I cant check the stream as I have no other available PC. And the VLC on the smartphone doesn't support udp routing.
    What I misunderstood? What am I doing wrong?

  • @sympathism
    @sympathism 4 ปีที่แล้ว

    Why does the router not use the destination mac adres of the guy in his network who wants to have the stream? Is it because that is unicast-like?

  • @chansetwo
    @chansetwo 3 ปีที่แล้ว

    Why are CCNP and CCIE topics showing-up on my CCNA Boson practice exam?????? Very frustrating.

  • @SamuelGermain97
    @SamuelGermain97 4 ปีที่แล้ว +4

    I do exactly the same thing, nugget, book, practice exams, & labs. I use boson for practice exams and labs!

  • @Gus_Leon
    @Gus_Leon 4 ปีที่แล้ว +18

    Hi Knox, Great explanation on Multicast in 5 minutes. Good job! I hope your child is doing much better. Stay safe, Gus.

  • @valerio53061
    @valerio53061 3 ปีที่แล้ว

    Hi Knox, is there some LABS about Multicast? thanks

  • @newwavex8665
    @newwavex8665 4 ปีที่แล้ว

    Broadcast wouldn't work in this scenario right? Due to the recipients being in a different broadcast domain?

  • @tdragon87
    @tdragon87 11 หลายเดือนก่อน

    How about queriers, that check if a client is still subscribed to that multicast? Otherwise it'll just keep sending data down that port.
    How I explain it, the highest level possible explanation: it's like a radio station. When you want to listen to a station, you just tune into that frequency. In any case that's missing a lot of points of course.

  • @DillyDogSays
    @DillyDogSays 2 ปีที่แล้ว

    Which PIM mode uses a shared tree only?

  • @shaunasigren
    @shaunasigren 3 หลายเดือนก่อน

    Isn't igmp layer 3?

  • @AAA-fi4pw
    @AAA-fi4pw 4 ปีที่แล้ว

    Anyone know what he's using for a whiteboard here?

  • @DanBurgaud
    @DanBurgaud 3 ปีที่แล้ว

    4:10 umm, why is 224.1.2.3 being routed to 10.0.1.10????? the IPs do not match

  • @mon0theist_tv
    @mon0theist_tv 3 ปีที่แล้ว +1

    Video starts at 1:54

  • @TerenceKearns
    @TerenceKearns 2 ปีที่แล้ว

    need this for ndi digital signage

  • @Mi_Fa_Volare
    @Mi_Fa_Volare 3 ปีที่แล้ว

    Can I make static routes of the multicast group addresses to narrow down the overlay path or will the routing table conflict with the igmp routes? Or will igmp override the routes and ignore them?

  • @GnarlySpookXT
    @GnarlySpookXT ปีที่แล้ว +1

    im a nerd and now want to understand multicast IGMP snooping within a VLAN

    • @bartomiejpotaman6973
      @bartomiejpotaman6973 3 หลายเดือนก่อน

      Sure buddy

    • @GnarlySpookXT
      @GnarlySpookXT 2 หลายเดือนก่อน

      @@bartomiejpotaman6973 welp just configured a stacked switch for it so yeah. Doing pretty good.

  • @Integr8d
    @Integr8d 4 ปีที่แล้ว

    Latitude on your camera is great. Which model are you using?

    • @DataKnox
      @DataKnox  4 ปีที่แล้ว

      You can find my gear at Amazon.com/shop/dataknox

  • @anonymousunitedph
    @anonymousunitedph 3 ปีที่แล้ว

    so what is the best multicast rate for gaming??

  • @blatchie4608
    @blatchie4608 4 ปีที่แล้ว +8

    Just wanted to say that this is very well made and even a relative beginner like myself understood the more complex parts very well thanks to your wonderful explanation :)

  • @parheliaa
    @parheliaa 4 ปีที่แล้ว +2

    Finally, somebody addressed L2 problem in "multicast introduction"
    Seriously, my first question when I heard "multicast is a transmission from one source to selected clients" was "cute, but how the hell Switch knows that this is multicast and does not flood it as unknown unicast?"

    • @DataKnox
      @DataKnox  4 ปีที่แล้ว +1

      That's exactly why I wanted to spend some extra time on it! I was stuck there, too

    • @chaseduke5322
      @chaseduke5322 4 ปีที่แล้ว

      Exactly! This is the key that should always be taught, but isn’t... Great video.

  • @persistent25u
    @persistent25u ปีที่แล้ว

    Thank you and best of luck with your studies and exam

  • @manaman8608
    @manaman8608 6 หลายเดือนก่อน

    Wow…short, sweet and to the point!

  • @Dot0011
    @Dot0011 2 ปีที่แล้ว

    good video, content starts at 1:55

  • @BullCraftMaxx
    @BullCraftMaxx 3 ปีที่แล้ว

    I thought IGMP is layer 3. IGMP Snopping is Layer 2 I believe

  • @TehObLiVioUs
    @TehObLiVioUs ปีที่แล้ว

    I LITERALLY came to youtube for your learning explaination ( YEP YEP *watches the video* )
    1.) get a high level overview of the topic first
    2.) go in depth
    3.) do examples/labs if there are any to do

  • @anachronic-vibes
    @anachronic-vibes 4 ปีที่แล้ว +1

    I remember back in April when i was going through multicast and how good it felt when i finally could say "ok, i'm ready, next topic". Two VMs with VLC would do great for a GNS3 multicast lab. However i had some trouble with running both the sender and the receiver using the same hypervisor, but using two hypervisors (vmware player and virtualbox) will work just fine.
    This exam is not that hard. You'll have no trouble passing it. After checking the blueprints and watching reviews, i think the ENAUTO and ENARSI will be much harder exams than ENCOR.
    Your journey is an inspiration and i hope it will end in success.
    Good luck man!

    • @DataKnox
      @DataKnox  4 ปีที่แล้ว

      ENAUTO was challenging, but nowhere near as hard as DEVCOR. With the right study plan and practice, ENAUTO is definitely passable

  • @sidefmovies
    @sidefmovies 3 ปีที่แล้ว +3

    This is perfect Knox. Knowing an overview of a topic makes it easier when facing the subject in detail later. I’m wondering if cbtnuggets should have this style nugget for each subject in a given course / certification. Thanks 👍🏻

  • @arturovelasco7200
    @arturovelasco7200 4 ปีที่แล้ว

    Excellent explanation, I also started studying for the ENCOR exam, how do you recommend lab MST?

    • @DataKnox
      @DataKnox  4 ปีที่แล้ว +1

      EVE-NG, or buy some switches off eBay!

  • @bilalbashir
    @bilalbashir ปีที่แล้ว

    Good video short and precise

  • @RockefellerSidney
    @RockefellerSidney 2 หลายเดือนก่อน

    3882 Verla Ridges

  • @sebastianscharnagl8729
    @sebastianscharnagl8729 2 ปีที่แล้ว +2

    Thanks a thousand! It explained all my basic questions, especially the second part with the switch layer!

  • @cliffclof
    @cliffclof 2 ปีที่แล้ว

    Bravo. This is great explanation.

  • @Huntabyte
    @Huntabyte 4 ปีที่แล้ว +1

    Awesome explanation of multicast Knox! Funny my study methods are flipped a bit from yours, I always read books first, and then get a second easier to comprehend explanation from an expert via video!

  • @AgentRacerX
    @AgentRacerX 9 หลายเดือนก่อน

    This was awesome! thank you!

  • @adnanalghail689
    @adnanalghail689 3 ปีที่แล้ว

    Love it Knox, Thanks.!

  • @paulpaula2011
    @paulpaula2011 2 ปีที่แล้ว

    Brilliant explanation

  • @Geo0792
    @Geo0792 4 ปีที่แล้ว +1

    I hope your child is well by now. Thank you for the video, I was able to have a better a idea about multicast now

  • @SAIKIRAN-bf8ko
    @SAIKIRAN-bf8ko 4 ปีที่แล้ว

    You did it , I think this is how zoom and WebEx work in the cloud ..., Aren't they ?

  • @moroccangladiator
    @moroccangladiator 2 ปีที่แล้ว

    Nice shot 👌

  • @snehapradhan8472
    @snehapradhan8472 3 ปีที่แล้ว

    Wooow....really nicely explained

  • @adamlicht6614
    @adamlicht6614 4 ปีที่แล้ว +1

    This was brilliant. Very well done sir!

  • @HeyItsWatson
    @HeyItsWatson 3 ปีที่แล้ว

    Didnt you mean explained in 9minutes and 13 seconds?

  • @themistoclesnelson2163
    @themistoclesnelson2163 2 ปีที่แล้ว

    Thanks for the simple explanation!

  • @watermanli
    @watermanli 3 ปีที่แล้ว

    Great Job!

  • @robearhong
    @robearhong 4 ปีที่แล้ว

    Moses?

  • @deokyongsng
    @deokyongsng 2 ปีที่แล้ว

    I should’ve watched this video before I lost my hair.

  • @toriaezunama
    @toriaezunama 4 ปีที่แล้ว

    Awesome. Great overview

  • @asceansionlee9340
    @asceansionlee9340 3 ปีที่แล้ว

    did u say FAMILY? that right don

  • @ElreyRayo
    @ElreyRayo 3 ปีที่แล้ว

    Nice job 👌

  • @ApostKef
    @ApostKef 4 ปีที่แล้ว +2

    Omfg, you nailed it!!! Thanks!

  • @0zillabox0
    @0zillabox0 3 ปีที่แล้ว

    Thank you! At least, I hope I learn.

  • @TobiasRuano
    @TobiasRuano 4 ปีที่แล้ว

    You are a savior!

  • @barsvelioglu2276
    @barsvelioglu2276 2 ปีที่แล้ว

    Really nice explanation. Thanks.
    Subscribed (:

  • @joeheaney3641
    @joeheaney3641 2 ปีที่แล้ว

    If you close your eyes it sounds like micky mouse is doing the voiceover 😂, great video tho

  • @ivorobotnik4329
    @ivorobotnik4329 3 ปีที่แล้ว +1

    Great video! Simple and easy to follow!

  • @bigevilbeard
    @bigevilbeard 4 ปีที่แล้ว +1

    Nice beard brother!

    • @DataKnox
      @DataKnox  4 ปีที่แล้ว +2

      It’s getting there!

  • @kofo757
    @kofo757 ปีที่แล้ว

    Great

  • @robertvandyke9781
    @robertvandyke9781 3 ปีที่แล้ว

    great

  • @AeroAngle
    @AeroAngle ปีที่แล้ว

    is this how college librarys send messages "5 minutes before this computer turns off"???????

  • @tkokflux6322
    @tkokflux6322 ปีที่แล้ว +1

    blud this first minute or so ur simply yappin get to the point

  • @allanumali
    @allanumali ปีที่แล้ว

    The background music is very distracting. I can't focus on what you're saying...

  • @allentoyski
    @allentoyski 4 ปีที่แล้ว

    halfway through on the text book wooow

  • @rogersantosprojects
    @rogersantosprojects ปีที่แล้ว

    IGMP is layer 3

  • @o-o857
    @o-o857 3 ปีที่แล้ว +1

    2 minutes of a 9 minute video spent not explaining the thing in the title, nice job

  • @jack53104
    @jack53104 3 ปีที่แล้ว

    That vibrating death star is really annoying :(

  • @troysipple2591
    @troysipple2591 4 ปีที่แล้ว

    The CCNA R&S didn't go into multicast a whole lot. I've kind of been wondering how it works in full detail.

  • @denccvv1107
    @denccvv1107 2 ปีที่แล้ว

    Video starts at 1:55