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Okay, so welcome to today's INE V seminar,
this virtual seminar on IPv4 addressing and subnetting.
Going to cover a lot of stuff today.
Break it down into various different
sections and I'll show you that
here in the agenda section in just one second.
For those of you who may never
have taken a class from me before
or seen any of my videos, my name is Keith Bogart.
I am one of the instructors here at INE and I am pleased to serve
you today. So at any point in time during today's session,
if you have any questions or if you
feel a little bit lost or something
I'm explaining to you just isn't clicking,
by all means, go ahead and use the
live question feed there to type
in your question.
I will be monitoring that as we go along.
I don't expect to get an overwhelming
amount of people watching today
so I should be able to get to
pretty much any question that you have
and then we will take it from there.
So let's just go ahead and go
right into it just sort of set the agenda,
sort of set the tone as far as what we're going to cover
and all that good stuff.
Okay, so what is our agenda for today?
We're going to start with sort of a brief history of IPv4.
I feel like this is really critical
to understand because you really
have to understand why do we have IPv4 addresses?
What problem were they originally designed to solve?
And the problem they were designed
to solve back in the 1970s is not
the same problems that we have today
in today's larger networks.
So it's beneficial to see the
evolution that IP has gone through.
Then we're going to look at
communications within a broadcast domain
and see how IPv4 addresses work with a broadcast domain.
How do IPv4 addresses work in
conjunction with MAC addresses, for example.
We're going to spend some
time identifying classes and types
of IPv4 addresses.
You will understand by the time
we're done with this what is meant
by a class A through a class E address
and how can you identify them.
You'll understand if I show you an IP address in binary,
or in dotted decimal, how can you
tell if it's a broadcast address,
a multicast address, or a unicast address?
We'll learn that.
We'll talk a little bit about IPv4 governing bodies.
You know, back when IPv4 was very
first developed in the early 1970's,
there really was no governing body.
It was just a literally a handful
of colleges and universities
was using this.
There was no need for anybody out
there to be allocating IP addresses,
to be controlling where IP subnets
went throughout the world,
but nowadays there is.
So we'll talk about who those governing
bodies are and how they actually
are important to you.
We'll look at public versus private addresses
so you can recognize those and see when they are used.
Certainly, we got to go into the concept of IPv4 subnet masks,
and then we'll go into subnetting
and we'll start with the old way
of subnetting which is Same-Length Subnetting.
And then once you understand that in gory detail,
then we'll build on that by going
into Variable Length Subnet Masking,
and they both serve their own unique purposes.
And then we'll finish up with two
topics with IPv4 address summarization
and something called, supernetting.
So like I mentioned, throughout this there's going to be several
quizzes I'm going to give you where I'll give you,
depending on the quiz question,
anywhere from 30 seconds to a minute
to answer it. Now, if you find that
you just don't have enough time
to answer the quiz question, this is what I would recommend.
Right now, if you haven't already done so,
if you've got some sort of screen
capture software that you've got
available to you, like Windows
Snipping Tool or Snagit or something
like that, you might want to bring it up.
And so when I get to those quiz questions,
take a quick screenshot of those.
And then when I get to the answer slide,
take a quick screenshot of that as well.
That way if during any quiz question, you got stuck,
or you just didn't have enough time to complete it,
when the session's done you still have access to them.
Like I said, this is being recorded,
and it should be available very soon.
Here we are, as I'm recording this, this is Tuesday,
May 19th, 2015.
I expect that by the end of this week,
maybe early next week sometime,
it should be available and up for viewing.
But if between now and then you want to practice those quizzes,
taking a screenshot is your best way to go ahead and do that.
One other thing.
There is just a tiny little bit of
prerequisite knowledge that I'm
assuming that you have, which is simply the ability to understand
binary and to be able to count in binary.
In other words, there's going to be a lot of examples here,
a lot of pictures I've drawn with binary numbers.
We're going to spend a lot of time
taking a binary number and converting
it into a decimal number, or the opposite -
taking a decimal number and converting it into binary.
Don't really have time to teach you
how to do that today, so I'm assuming
that you already know how to do that.
If you don't, by all means look at my CCNE video series.
There's lots of different resources
available to you to teach you
that skill. Not that hard to do,
it's just I don't really have time
to go into that today.
So I'm assuming you already have that under your belt.
Let's go ahead and jump right into it.
Like I said, if at any point in time you have a question,
feel free to type your question in.
I will take some periodic breaks today.
We're starting at 12:00 noon.
I'm figuring somewhere probably around
1:30 we'll take about a 20 minute break,
and then we might take one
more 15 minute break somewhere
throughout the day.
I'm not sure how long this is going to last.
I would say it will be an absolute
minimum of two-and-a-half hours.
I don't see it being any less than that.
And it could conceivably be as much as four or four-and-a-half hours,
just depending on the quantity of questions that you guys have.
It's going to be somewhere in that time range -
two-and-a-half to four-and-a-half hours.
I know it's a large window, but like I said,
it is being recorded so if you need to step away early,
you'll be able to see whatever you
missed in a week or less.
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