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Okay, so welcome to
today's INE V seminar,

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this virtual seminar on IPv4
addressing and subnetting.

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Going to cover a lot
of stuff today.

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Break it down into
various different

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sections and I'll show you that

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here in the agenda section
in just one second.

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For those of you who may never

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have taken a class
from me before

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or seen any of my videos,
my name is Keith Bogart.

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I am one of the instructors here
at INE and I am pleased to serve

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you today. So at any point in
time during today's session,

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if you have any
questions or if you

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feel a little bit
lost or something

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I'm explaining to you
just isn't clicking,

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by all means, go
ahead and use the

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live question feed there to type

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in your question.

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I will be monitoring
that as we go along.

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I don't expect to
get an overwhelming

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amount of people watching today

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so I should be able to get to

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pretty much any
question that you have

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and then we will
take it from there.

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So let's just go ahead and go

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right into it just sort
of set the agenda,

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sort of set the tone as far
as what we're going to cover

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and all that good stuff.

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Okay, so what is our
agenda for today?

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We're going to start with sort
of a brief history of IPv4.

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I feel like this
is really critical

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to understand because you really

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have to understand why do
we have IPv4 addresses?

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What problem were they
originally designed to solve?

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And the problem
they were designed

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to solve back in the 1970s is not

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the same problems
that we have today

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in today's larger networks.

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So it's beneficial to see the

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evolution that IP
has gone through.

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Then we're going to look at

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communications within
a broadcast domain

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and see how IPv4 addresses
work with a broadcast domain.

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How do IPv4 addresses work in

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conjunction with MAC
addresses, for example.

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We're going to spend some

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time identifying
classes and types

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of IPv4 addresses.

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You will understand by the time

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we're done with
this what is meant

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by a class A through
a class E address

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and how can you identify them.

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You'll understand if I show
you an IP address in binary,

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or in dotted
decimal, how can you

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tell if it's a
broadcast address,

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a multicast address,
or a unicast address?

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We'll learn that.

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We'll talk a little bit about
IPv4 governing bodies.

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You know, back when IPv4 was very

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first developed in
the early 1970's,

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there really was
no governing body.

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It was just a literally a handful

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of colleges and universities

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was using this.

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There was no need
for anybody out

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there to be allocating
IP addresses,

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to be controlling
where IP subnets

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went throughout the world,

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but nowadays there is.

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So we'll talk about
who those governing

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bodies are and how they actually

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are important to you.

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We'll look at public
versus private addresses

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so you can recognize those
and see when they are used.

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Certainly, we got to go into the
concept of IPv4 subnet masks,

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and then we'll go
into subnetting

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and we'll start with the old way

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of subnetting which is
Same-Length Subnetting.

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And then once you understand
that in gory detail,

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then we'll build
on that by going

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into Variable Length
Subnet Masking,

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and they both serve their
own unique purposes.

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And then we'll
finish up with two

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topics with IPv4
address summarization

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and something called,
supernetting.

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So like I mentioned, throughout
this there's going to be several

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quizzes I'm going to give
you where I'll give you,

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depending on the quiz question,

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anywhere from 30
seconds to a minute

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to answer it. Now,
if you find that

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you just don't have enough time

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to answer the quiz question,
this is what I would recommend.

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Right now, if you haven't
already done so,

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if you've got some
sort of screen

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capture software that you've got

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available to you, like Windows

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Snipping Tool or
Snagit or something

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like that, you might
want to bring it up.

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And so when I get to
those quiz questions,

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take a quick
screenshot of those.

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And then when I get
to the answer slide,

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take a quick screenshot
of that as well.

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That way if during any quiz
question, you got stuck,

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or you just didn't have
enough time to complete it,

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when the session's done you
still have access to them.

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Like I said, this
is being recorded,

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and it should be
available very soon.

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Here we are, as I'm recording
this, this is Tuesday,

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May 19th, 2015.

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I expect that by the
end of this week,

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maybe early next week sometime,

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it should be available
and up for viewing.

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But if between now and then you
want to practice those quizzes,

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taking a screenshot is your best
way to go ahead and do that.

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One other thing.

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There is just a
tiny little bit of

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prerequisite knowledge that I'm

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assuming that you have, which is
simply the ability to understand

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binary and to be able
to count in binary.

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In other words, there's going
to be a lot of examples here,

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a lot of pictures I've
drawn with binary numbers.

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We're going to spend
a lot of time

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taking a binary
number and converting

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it into a decimal number,
or the opposite -

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taking a decimal number and
converting it into binary.

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Don't really have
time to teach you

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how to do that today,
so I'm assuming

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that you already
know how to do that.

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If you don't, by all means
look at my CCNE video series.

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There's lots of
different resources

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available to you to teach you

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that skill. Not that hard to do,

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it's just I don't
really have time

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to go into that today.

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So I'm assuming you already
have that under your belt.

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Let's go ahead and
jump right into it.

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Like I said, if at any point
in time you have a question,

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feel free to type
your question in.

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I will take some
periodic breaks today.

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We're starting at 12:00 noon.

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I'm figuring somewhere
probably around

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1:30 we'll take about
a 20 minute break,

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and then we might take one

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more 15 minute break somewhere

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throughout the day.

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I'm not sure how long
this is going to last.

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I would say it will
be an absolute

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minimum of two-and-a-half hours.

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I don't see it being
any less than that.

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And it could conceivably be as much
as four or four-and-a-half hours,

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just depending on the quantity
of questions that you guys have.

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It's going to be somewhere
in that time range -

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two-and-a-half to
four-and-a-half hours.

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I know it's a large
window, but like I said,

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it is being recorded so if
you need to step away early,

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you'll be able to
see whatever you

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missed in a week or less.

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