A short presentation on the Data Link Layer, the LLC and MAC sublayers, the structure of MAC addressing, and the structure of an Ethernet Frame. Here is the link to the slides: drive.google.com/open?id=19vn...
Пікірлер: 63
@BijouBakson4 жыл бұрын
This is probably the most detailed course on the subject that I have seen yet
@republicgreenfather30683 жыл бұрын
Excellent Sir, I never seen such a wonderful Explanation with Best Presentation.Thank you Sir Great Job
@SixAstron4 ай бұрын
Very well structured and presented. Thank you
@danielschiffers96962 жыл бұрын
I love your video's! To the point, detailed and fun to watch.
@iwktwom3 жыл бұрын
A uni exam tomorrow and this is fantastic, thanks for the brilliant content.
@Hypocrisy.Allergic2 жыл бұрын
this is the course for the curious guys who really want to handle all the info, i love it, even though it s a bit too advanced, i find it challenging
@zulauk Жыл бұрын
Wow this is the best way I've ever heard this explained, thanks for such a well thought out video.
@steveromanchuk49662 жыл бұрын
I love it, the best explanation of the Data Link layer I've ever seen!
@zafranullah83284 жыл бұрын
Very detailed and brilliantly explained.
@dannyuwu3741 Жыл бұрын
Great video! I used it to review for my networking exam. Keep it up!
@mantid83 Жыл бұрын
Going to watch all your videos. So detailed and I needed it badly!
@Charles-xd6lw4 жыл бұрын
Excellent video. Thanks. I love your work.
@dkmpala18353 жыл бұрын
Thanks for the video, found it very easy to follow.
@Benadamsonn3 жыл бұрын
Great and amazing explanation, well done danscourse
@petersu48693 жыл бұрын
Bravo, excellent explanation of data link layer
@judeleon84852 жыл бұрын
This is marvelous, well explained
@hawkeye46593 жыл бұрын
Thank you for your hard work.
@ninjahunter21993 жыл бұрын
dd an exam u helped me nail it..thnk u
@Olavotemrazaodenovo3 жыл бұрын
Congratulations from Brazil.
@dave1b3 жыл бұрын
Thanks a lot. Great video!
@Limegreenslice11 ай бұрын
Great and very informative video!!
@majiddehbi91864 жыл бұрын
very interesting and Clair thx
@ahmadullahazizi30384 жыл бұрын
Are these videos in this playlist are updated? I means CCNA 200-301?
@robertolin45683 жыл бұрын
Doesn't CD in CSMA/CD mean Collision Detection (instead of Collision Recovery shown in the first slide) ?
@ye_nope4 жыл бұрын
Thanks again !
@gullejannat67564 жыл бұрын
hey, did you guide me if there are 1510 bits to be sent over ethernet how many would it take? 2?
@KirinChan19983 жыл бұрын
yessirrrrr!!! Thanks for this.
@zachfenton6082 жыл бұрын
This is awesome thanks
@olekristianrannekleiv7623 жыл бұрын
is frames made before flow control at the data link layer?
@James_Knott Жыл бұрын
The preamble is used only on 10 Mb. On 100 Mb and faster, a different coding method is used and some reserved symbols are used to delimit the frames. Same with the inter-packet gap. Also, frames are no longer limited to 1500 bytes. That's an artifact of the original Ethernet and then by 802.3 using the Ethertype field for length. With DIX ll, it's Ethertype. Frame expansion appeared in the late 90s and now, with jumbo frames, 16K can be used, IIRC. You could have mentioned that if Ethertype/length is 1500 or less, it's an 803.2 frame and 1536 or greater for DIX ll. IP uses DIX and about the only thing that currently uses 802.3 is spanning tree. Other protocols that used to use it are now obsolete. A good reference is Ethernet The Definitive Guide, from O'Reilly and, for a bit of history, you might want to download the Ethernet Blue Book (Gordon Bell), which goes into the original DIX protocol, before DIX ll & 802.3.
@Parkhill5711 ай бұрын
So basically, this video is completely obsolete.
@James_Knott11 ай бұрын
@@Parkhill57 Well, not completely obsolete, but a lot has changed.
@freddyhardware8407 ай бұрын
@@James_Knott I hope someone like yourself or the original creator of this video will explain it with updated info. I have a logistics background and would understand things better if explained in logistics form.
@James_Knott7 ай бұрын
@@freddyhardware840 I'm really not sure what you're asking for or how logistics would apply
@franchise25703 ай бұрын
Are you sure about this? The preamble isn’t part of the frame, but has always been used to indicate the start of the frame for synchronization. No where have I heard or read that this has changed, for Ethernet II or 802.3. If so please provide proof.
@samucancld2 жыл бұрын
Buenísimo loko
@narfastaroth23203 жыл бұрын
Gracias!!
@milotxh4 жыл бұрын
love your video's do u have any online classes for CCNA am working on my rectification
@mosabkhedeer76942 жыл бұрын
Good job thank you
@JuiceManTech Жыл бұрын
Thanks for the video. What layer would you say the DHCP server works on?
@FurdgeBJJ20 күн бұрын
Layer 3
@draakoss14923 ай бұрын
Perfection
@danielnyman26562 жыл бұрын
I understand that VLAN-tagging (TPID + PCP + DEI + VID) is inserted before the EtherType field, but can someone explain when “0x8100 VLAN-tagged frame” is used in EtherType field?
@Hypocrisy.Allergic2 жыл бұрын
it is used when you have multiple vlans, if you have only the default vlan it is assumed all the frames go to the default vlan, when you enter the comman encapsulaion dot1q :vlan number: command it is when you basically tell that subinterface for instance, to be the subinterface responsable for that specific vlan. you can exercise this with wireshark and see the standard ethernet frame, and the ethernet frame when it is tagged.
@markganus10852 жыл бұрын
is ethernet frame header the same as ethernet frame? if not, which fields are different?
@shadowworks43803 жыл бұрын
I have on queation is it posible to have a working phone of pc whithout a mac adres and stil acces the internet ?
@potheeswaran4494 Жыл бұрын
Can you tell me why the destination address comes first in this ethernet frame? By default source address is first and then only the destination address. What is the logic behind this?
@kapilramanujancbse2 жыл бұрын
Hi How about a data payload greater than 1500 bytes is transmitted. So how does the fragmentation happen?.
@professoreno31394 жыл бұрын
Hi Dan, can you share this PowerPoint or diagram? As always, thank you for sharing your knowledge...
@danscourses4 жыл бұрын
Yes! I just added the link to the slides in the video description but here it is also: drive.google.com/open?id=19vnT21JflhCMenQNKeCJ4P_OdlJu29mP
@careditor3 жыл бұрын
Is all this coded in the shell? ....I am a brand new newbie to IT Support and a little confused....
@wally192 жыл бұрын
wait, if you have a 42-1500 bytes w/802.1Q how do you get 1522? I think that its always "min 46 max 1500" then you have 18bytes from the eth frame or 22 with the Eth frame w/802.1Q Without 802.1Q: 64-1500 + 18 = 1518 With 802.1Q: 64-1500 + 18 + 4 = 1522
@SAMARTBO2 жыл бұрын
thanks.
@soulyt25 Жыл бұрын
🐐
@majiddehbi9186 Жыл бұрын
i wonder if u are still actve Sir we miss u re lessons
@danscourses Жыл бұрын
I am still here Majid. What video topics are you interested in?
@majiddehbi9186 Жыл бұрын
@@danscourses haapy to hear from you Sir you the first who initiated me to networkin just to tell ou i recently passed my CCNA 200-301 AND NOW I M PREPARING FOR CCNP ENCOR I WAS JUST WONDERING IF YOU COULDN4T HELP ME OUT WITH THIS JUST BY SOME ADVISES OR THOUGHTS THX FOR ALL
@thomasturner17393 ай бұрын
Is this still current in 2024?
@einarsdandens89613 жыл бұрын
Hello vhat open wrong internet adress
@marksummers4633 жыл бұрын
way too detailed useless give an over view thn graduallu add details
@NUVOILLUSR5671 Жыл бұрын
Sure if he was trying to explain this to attempt to help you transition from whatever level of knowledge you have, he could have done an overview and recapped on essential concepts but this is far from useless