WEBVTT

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 Hello and welcome to this presentation
 by INE of what is ethernet and

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 why should I care?

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 So in this thing I'm going to give you
 everything you ever wanted to know

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 but we're afraid to
 ask about ethernet.

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 So let's start with some of the course
 objectives just to give you an

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 idea of what this course
 was designed for.

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 So first of all, this course wasn't really
 designed to fall in a particular

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 bucket of Cisco certifications, not
 just for Cisco CCNA or CCNP or CCIE.

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 This is about ethernet.

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 This is for people whatever level you
 are at currently in your studies

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 or maybe you're not studying for a
 certification at all, you just want

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 to learn more about ethernet.

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 That's what this is for.

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 Now certainly the stuff I'm going to
 teach you here is relevant at all

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 levels of Cisco certifications but
 it wasn't designed to fall into one

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 of those categories
 of certifications.

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 So I devised this to provide you an
 understanding of the developmental

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 history of ethernet.

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 I don't know about you but if you're like
 me knowing how something started,

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 how it was created in the first place,
 what problem it was designed to

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 solve and then seeing how it evolved
 over time really helps me to better

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 grasp how the protocol is today
 and how it got that way.

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 We're going to talk about that.

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 Give you some clear examples of the different
 ethernet frame format sizes

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 and options. So we're going to go into
 what all the different fields are

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 within an ethernet frame so that if you
 ever do a wire shark sniffer capture

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 or something like that, you
 know what you're looking at.

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 Going to go into the details of carrier
 sense multiple access collision

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 detect as it pertains to ethernet.


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 Certainly if you're studying for any
 Cisco certification, this is one

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 of those things they definitely expected
 to know CSMACD and how it works.

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 So we're going to get into all
 the gory details of that.

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 Now we're going to recognize some high
 level differences in ethernet cables.

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 Talk a little bit about
 cable structure.

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 You know, what's the difference between
 shielded posted pair versus unshielded

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 twisted pair. You know, what's the
 difference between 10 base T versus

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 100 base TX and that kind of stuff
 and other things in here as well.

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 So there's going to be other topics
 above and beyond just what we have

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 here as our course objectives.

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 So what's my agenda?

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 So I'm breaking this up
 into a series of videos.

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 So hopefully each video will
 be fairly short in duration.

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 The first section will be ethernet
 overview and history.

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 Following that will spend
 a detailed time on CSMACD.

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 Talk a little bit about auto negotiation,
 which is something that happens

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 in the background.

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 Not really something you can influence,
 but if you're like me, sometimes

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 you wonder how is this working?

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 I might not be able to influence it,
 but what exactly is it doing to do

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 this? And auto negotiation
 is one of those topics.

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 We'll look at the ethernet
 frame structure.

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 We'll talk about ethernet frame sizes
 and things like, for example, called

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 Runtz and Giants and Jumbo frames.


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 And then we'll finish up with
 ethernet cabling types.

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 So prerequisite knowledge.

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 Yes, I am assuming that if you're watching
 this, there is some really

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 sort of low level knowledge that you
 already have under your belt to make

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 use of this. For example, in one of
 my slides, I show the OSI model and

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 I'm going to talk about where ethernet
 fits into the OSI model.

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 Well, if you don't know what the OSI
 model is, that will be completely

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 irrelevant to you,
 meaningless to you.

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 So I'm hoping you know
 what the OSI model is.

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 The concepts of encapsulating
 and decapsulating data.

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 In other words, when I just said that,
 encapsulating and decapsulating

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 data, were you thinking,
 huh, what's that?

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 If so, probably want to pause this
 and go to that topic within a CCNA

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 curriculum. I'm going to be using terms
 such as bandwidth and bits and

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 bytes. Once again, I'm hoping that
 you understand what I just said and

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 it didn't just fly over your head.


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 And also understanding at a real high
 level sort of conceptually how binary

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 bits, how ones and zeros can
 be used to represent data.

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 Now, there's lots of different ways that
 we can use binary to encode data,

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 but just sort of a general idea that
 binary is just a code, right?

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 Whether I'm looking at an image or whether
 I'm looking at text or whether

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 I'm listening to an audio file, electrically,
 that's all converted into

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 electrical signals
 of ones and zeros.

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 And my system and the other receiving
 system knows how to convert that

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 back into an image or an audio
 file or some sort of text.

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 So I'm hoping you're
 familiar with that.

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 So this actually is taking place
 as a live course right now.

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 So if you're watching the recording
 every once in a while, you'll see

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 me go back to the live learners just
 to see if they have any questions

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 and answer any questions
 that they might have.

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 Now, if you're watching this as a recording
 and you did not have a chance

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 to watch the live version, by all means,
 you can feel free to submit your

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 questions at any time.

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 And you can see here, here's my email
 address, kbogart at i&e.com.

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 Also, if you want, you can
 follow me on Twitter.

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 And that's where I post tweets about
 things like upcoming courses I'm

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 going to have, upcoming live
 boot camps I'm going to have.

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 We're going to have a CCNA boot camp
 here in the INE office just next

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 week. And also, you can follow me on
 LinkedIn, where I also post things,

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 post some documents or just give status
 updates about what's going on