1
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(light digital music)

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- So we finally have GNS3 up and running.

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We've got it loaded, it's
ready to go to start building

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00:00:14,249 --> 00:00:17,848
our virtual lab, so let's go
ahead and get going with that.

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So, in these next set of videos,

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I'm gonna actually be combining
several things at once.

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I'm gonna be slowly building
a lab, and at the same time,

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I'm gonna be telling
you a little bit about

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what the various icons are
and what the toolbars are

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surrounding the outer periphery

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or the outside of your GNS GUI.

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So let's get started with that.

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So let's go ahead and open up GNS3,

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and like we saw previously,
the first thing it's gonna do

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is ask us to name this particular project.

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And that's whatever you want.

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You could even leave it
as Untitled if you wish.

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But I'm just gonna say Test CCNA...

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I'll just say CCNA Project1.

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There we go.

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Okay, so let's talk a little bit about

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what we are looking at here,

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and what these various
things are on the screen.

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So, starting with this area right here,

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this large white space.

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Basically, we call this the workspace.

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So, this is where your
various routers and stuff

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are gonna end up going, they're
connected to each other,

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and your switches and things like that,

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and so this is where you're
gonna create your topology,

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is in the workspace.

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Now, the next thing I wanna focus on

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is this toolbar right here on the left.

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This is called the Devices toolbar,

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and from here, like it sounds,

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you get to select the various
devices that you want.

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Now, the devices that are
gonna be available here

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are dependent on a couple of things.

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Number one depends on what IOS software

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you have put in here.

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Now, at minimum, you should have something

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in the router section.

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I mean, even if you have just one flavor

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of Cisco IOS software, it's
gonna be router software,

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because GNS3 doesn't
support switching software,

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it only supports router software.

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So you'll have something
in the router section.

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So let's go ahead and open up this

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and see what it looks like.

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So if I go ahead and click on this,

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it shows me that right now,
I have a single router,

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because, I should say, a single platform

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of router available to
me, because right now,

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all I loaded in was a 3725

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IOS image.

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If for some reason I want more,

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I would just go up to Edit, Preferences,

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and then on my left section
here under Dynamips,

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I'd click on IOS routers, and I'd say New.

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And then I would locate the
new image I want to insert,

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which in this case is
stored in my hard drive.

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Maybe I want a 7200 series IOS.

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So I'd put that in there,

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and you should always decompress it,

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that way your routers will
start much more quickly.

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You could just leave the name the same,

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and this is just like
we talked about earlier.

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Make sure the memory,

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that actually is the appropriate
amount of memory, 512 megs.

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And that's one of the downsides
of using the 7200 series,

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they eat up a gob of memory.

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You can see that just
running two of those things

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is gonna eat up one gig.

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And then you populate your slots,

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so I'll just put another couple
of Fast Ethernets in there,

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and I'll put a 8-Port serial card,

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and that's all I'm gonna do for now.

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And then select your Idle PC.

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And this is all stuff that we saw earlier

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in the previous videos.

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All I'm doing right now is
showing you what you need to do

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if you wanna get another model
of router available to you

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in the Routers devices.

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So this shouldn't take too long.

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And there we go.

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Now we have an Idle PC
value that's been found.

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So I can hit that and Finish.

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And now when I hit Apply

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and OK,

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now if I go back to the Routers section,

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I've got two different flavors of router.

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Now, remember what I told you earlier,

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that, ideally, when you
create your topologies,

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if you can, just stick
with one flavor of router.

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For example, in this
particular topology here,

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if I drop in a couple of

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3725s,

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and then maybe a 7200,

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I'm now gonna be eating
up a lot more memory.

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Now, these routers right
now are not turned on,

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they're not powered on, but
once they are turned on,

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it's gonna consume more memory because

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I'm gonna have a 7200 series image running

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at the same time as a 3725 image.

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Be a lot easier if I
just get rid of my 7200,

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and just keep my topology purely
made of all the same model,

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3725s, that will

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consume less memory on my

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laptop.

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So you can see here,
I've shown you basically,

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here's the routers, you just basically

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drag and drop them into your topology.

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Now, one thing that's
kind of nice about this,

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as you've seen, I've been dragging them

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individually one at a time.

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A nice little sort of
shortcut, 'cause I'm guessing

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you're probably gonna
wanna make a topology

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that's more than one router is,

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and what I'm doing here
is I'm just right-clicking

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on the router to get all
of these various options.

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Is when you drag your router in,

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before you let go of your mouse,

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on your keyboard, press your Shift key.

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And then while you're pressing
Shift, let go of your mouse.

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And now it actually prompts you,

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how many routers do you want to drop.

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So instead of just dropping one,

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if I know that my topology
is gonna have five routers,

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I can just put five here,
and bam, there they are.

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There's all five routers.

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So that is the routers
devices, or the Router nodes,

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because, remember, everything
on this section here

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on the left is called a node.

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And the next one down
is the Switching nodes.

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And you can see that here GNS3 by default

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provides you an ATM switch.

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Now, this is a real, basic ATM switch.

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This is not running Cisco IOS.

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But if you wanna drag and
drop some routers here

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that have some ATM interfaces,

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well, you're gonna need an
ATM switch to connect them.

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And so here's a real easy way to do that.

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You'll also have an Ethernet hub.

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You have an Ethernet switch.

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So these first three here,

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these go by the name of built-in nodes,

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because you don't need
any special IOS for these,

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they are built into
GNS3 as built-in nodes.

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And then the last one,
also is a built-in node,

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the Frame Relay switch.

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That's also in there.

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And I'll just go ahead and drop in,

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for example, the Ethernet switch.

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We'll talk more about switching later on,

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but if I right-click that,

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you can see there's no option in here

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to open a command line, to open a console,

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because there is no command line in this.

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In this one, I would just hit Configure,

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and, for example, here I
could select, you know,

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my particular interfaces

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and whether I want them
to be access ports,

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802.1Q, what VLAN I want them to be in,

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and so on and so forth.

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And we'll get into more of that later on

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when we get into the switching section.

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Now, the one Switching node in here

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that is not a built-in node
is the EtherSwitch router.

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This is here because, when I
imported my 3725 IOS image,

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I clicked on that little box that said,

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this is an EtherSwitch router.

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And that automatically
told this router, hey,

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you need to have the Ethernet
switching module built in.

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So this is a 3725, but it's got

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that Ethernet switching module built in.

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So if I wanna practice some
actual Cisco IOS commands

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that relate to switching, this is the guy

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I would wanna drag and
drop into my topology.

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So those are your switches.

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The next node down is your PC type node.

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And you've actually got three of these.

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So let me start with the bottom one.

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The Virtual PC is most likely
the one that you're gonna use

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when you first get started with GNS3,

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this is the one you're gonna use.

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And like I mentioned in previous videos,

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this Virtual PC here

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allows you to, if I open
up the console of this...

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Actually, the console won't work right now

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because it's not turned
on, but if it was on,

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I'd open up the console, it
would let me start UDP streams,

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TCP streams, and we'll get all into that

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when I talk about how I
actually use these PCs.

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Now, you might be wondering to yourself,

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well, what's the difference
between this Virtual PC

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and this other node I see up
here called the Host node?

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Well, they're actually extremely
different from each other.

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Actually, the Host node and the Cloud node

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are exactly the same thing.

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They're just two different
representations for something,

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and I'm not...

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I'll talk more about this later,

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but let me just give you
a preview real quickly.

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So we know that GNS3 is running

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as an application inside of your laptop.

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And, presumably, your laptop has some sort

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of real network interface card, you know,

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a wired Ethernet card, or
at minimum, a Wi-Fi NIC.

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00:09:01,637 --> 00:09:04,105
Well, sometimes, you might have a desire

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to actually connect your
GNS3 virtual topology

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00:09:07,382 --> 00:09:09,631
to the real outside world.

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00:09:09,631 --> 00:09:12,159
And this is where you would
use either the Cloud node

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00:09:12,159 --> 00:09:14,260
or the Host node to do that.

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00:09:14,260 --> 00:09:16,129
Both of them do the exact same thing,

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00:09:16,129 --> 00:09:17,773
when you use those, so, for example,

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00:09:17,773 --> 00:09:19,879
if I bring in the Cloud node here,

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00:09:19,879 --> 00:09:21,210
one of the things I would
have to do with this,

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00:09:21,210 --> 00:09:23,255
I'm not gonna go into
the details right now,

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00:09:23,255 --> 00:09:25,045
but when you right-click on that,

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one of the things you would
do is within that Cloud node,

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00:09:26,845 --> 00:09:30,071
you would tell it what network
interface card I wanna use,

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like in my particular laptop,

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00:09:31,333 --> 00:09:35,092
I have both a wired
Ethernet and a Wi-Fi NIC.

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00:09:35,092 --> 00:09:36,789
So I could select one of those.

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00:09:36,789 --> 00:09:39,238
I could go into that
Cloud node and say, okay,

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00:09:39,238 --> 00:09:41,579
cloud, you're actually gonna connect

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00:09:41,579 --> 00:09:44,875
to my wired Ethernet NIC card.

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00:09:44,875 --> 00:09:46,846
And then if I connect one of those routers

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00:09:46,846 --> 00:09:48,928
to that cloud, guess what?

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00:09:48,928 --> 00:09:51,259
That router now actually has access to

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00:09:51,259 --> 00:09:54,266
whatever is connected to my wired NIC.

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00:09:54,266 --> 00:09:57,088
So if my wired NIC is connected
to a real physical switch

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00:09:57,088 --> 00:09:59,031
sitting on a desk right next to me,

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00:09:59,031 --> 00:10:02,236
or a real physical router
on a desk right next to me,

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00:10:02,236 --> 00:10:05,079
that physical device will
now be able to talk to

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00:10:05,079 --> 00:10:07,224
my virtual router, my emulated router,

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because they're both
connected via this cloud.

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And the cloud is that node
that actually connects

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00:10:13,478 --> 00:10:17,301
the virtual topology with
my actual physical NIC card.

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The cloud could also connect
to your Wi-Fi NIC card as well.

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00:10:21,192 --> 00:10:22,521
Now, you might be wondering, well,

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if Cloud and the Host node are
both exactly the same thing,

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00:10:27,749 --> 00:10:31,765
why would I use one or the
other, what's the difference?

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00:10:31,765 --> 00:10:34,341
It really is just for
you to keep your topology

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00:10:34,341 --> 00:10:35,654
sort of in your mind.

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00:10:35,654 --> 00:10:36,654
For example,

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00:10:37,563 --> 00:10:38,813
let's say that,

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00:10:39,771 --> 00:10:40,971
connected to my laptop,

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00:10:40,971 --> 00:10:43,547
connected to my Ethernet
cable right here on my laptop,

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I actually had a real, physical
Windows server right here,

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00:10:48,187 --> 00:10:51,470
running, like, you know,
a Windows R8 server,

252
00:10:51,470 --> 00:10:54,231
a Windows 2000 server,
or something like that.

253
00:10:54,231 --> 00:10:56,327
Because I was gonna use
that server for doing

254
00:10:56,327 --> 00:10:59,092
AAA, maybe I want it
to be a RADIUS server.

255
00:10:59,092 --> 00:11:02,702
Maybe I wanna configure it as
a domain server, or as a...

256
00:11:02,702 --> 00:11:05,186
You know, install Apache on
there, so I could browse to it,

257
00:11:05,186 --> 00:11:06,495
or somethin' like that.

258
00:11:06,495 --> 00:11:10,314
And I wanna connect my
GNS3 virtual topology

259
00:11:10,314 --> 00:11:12,972
to that one physical server.

260
00:11:12,972 --> 00:11:16,274
Well, in my topology, it would
probably make more sense,

261
00:11:16,274 --> 00:11:19,738
then, for me to connect
my router to the host,

262
00:11:19,738 --> 00:11:22,483
because, after all, my physical laptop,

263
00:11:22,483 --> 00:11:24,933
the cable is connecting to one thing,

264
00:11:24,933 --> 00:11:27,868
a host device, one physical server.

265
00:11:27,868 --> 00:11:30,900
I could just as easily have
used the cloud icon as well,

266
00:11:30,900 --> 00:11:32,735
because they both do the same thing.

267
00:11:32,735 --> 00:11:35,439
But where I would
probably use the cloud is,

268
00:11:35,439 --> 00:11:36,570
you know, as you get more advanced

269
00:11:36,570 --> 00:11:38,059
with some of your switching labs,

270
00:11:38,059 --> 00:11:40,308
especially when you get to the CCNP level,

271
00:11:40,308 --> 00:11:43,289
you'll realize that a lot
of the switching commands

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00:11:43,289 --> 00:11:46,708
that you'd need to know for
the CCNP and for the CCIE

273
00:11:46,708 --> 00:11:51,075
unfortunately require either
a real physical switch

274
00:11:51,075 --> 00:11:51,908
or L2IOU,

275
00:11:53,033 --> 00:11:54,200
and even L2IOU

276
00:11:55,086 --> 00:11:56,201
doesn't have all the commands

277
00:11:56,201 --> 00:11:57,915
that real physical switches do.

278
00:11:57,915 --> 00:12:00,105
So for a lot of that stuff,

279
00:12:00,105 --> 00:12:01,914
you're gonna need a real physical switch.

280
00:12:01,914 --> 00:12:03,891
So, let's say I had a little rack here.

281
00:12:03,891 --> 00:12:06,239
Let's say I had three physical switches

282
00:12:06,239 --> 00:12:09,352
that I purchased from Cisco or
from eBay or from some place,

283
00:12:09,352 --> 00:12:12,156
three physical switches,
and I wanna connect

284
00:12:12,156 --> 00:12:16,339
those three physical switches
into my GNS3 topology.

285
00:12:16,339 --> 00:12:18,511
Well, once again, I would
have to connect one of them

286
00:12:18,511 --> 00:12:21,699
physically to the NIC card on my laptop,

287
00:12:21,699 --> 00:12:23,980
and then I would probably
use the Cloud node,

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00:12:23,980 --> 00:12:25,211
because, in this particular case,

289
00:12:25,211 --> 00:12:26,598
just to think of it in my mind,

290
00:12:26,598 --> 00:12:28,192
well, my GNS3 environment's

291
00:12:28,192 --> 00:12:30,410
not really just connecting to one thing,

292
00:12:30,410 --> 00:12:33,800
it's connecting to three
things, three switches,

293
00:12:33,800 --> 00:12:36,569
so it makes more sense
for me to use the cloud.

294
00:12:36,569 --> 00:12:38,955
But, really, they both do
exactly the same thing.

295
00:12:38,955 --> 00:12:41,064
They're built-in nodes that allow you

296
00:12:41,064 --> 00:12:43,231
to connect your GNS3 environment

297
00:12:43,231 --> 00:12:46,209
to something physically
connected to your laptop.

298
00:12:46,209 --> 00:12:47,167
And that's it.

299
00:12:47,167 --> 00:12:48,472
So that's what they are.

300
00:12:48,472 --> 00:12:52,861
So let's go ahead and get
rid of those for a moment.

301
00:12:52,861 --> 00:12:54,376
Delete,

302
00:12:54,376 --> 00:12:55,293
and delete.

303
00:12:57,317 --> 00:13:00,311
And then, if we keep on going down,

304
00:13:00,311 --> 00:13:03,140
this one here, I don't
have anything in this.

305
00:13:03,140 --> 00:13:05,404
So this one says Security Devices.

306
00:13:05,404 --> 00:13:08,062
So this is for more advanced users.

307
00:13:08,062 --> 00:13:09,542
In order to do security devices,

308
00:13:09,542 --> 00:13:12,446
now I'd have to have some
virtual machines and stuff

309
00:13:12,446 --> 00:13:15,404
in order to do like a Cisco ASA

310
00:13:15,404 --> 00:13:17,404
or a PIX or something like that.

311
00:13:17,404 --> 00:13:20,011
But, in my case, I don't have
any of that kind of stuff,

312
00:13:20,011 --> 00:13:21,801
so there's nothing showing up here.

313
00:13:21,801 --> 00:13:25,795
And then this fifth one down
basically shows you everything.

314
00:13:25,795 --> 00:13:27,113
So, actually, you can just click on that,

315
00:13:27,113 --> 00:13:29,191
and it'll show you everything you have,

316
00:13:29,191 --> 00:13:32,759
if you just wanna get a
view of all the nodes.

317
00:13:32,759 --> 00:13:36,210
The last one is actually
not displaying any node.

318
00:13:36,210 --> 00:13:37,737
This last one, if you can see it

319
00:13:37,737 --> 00:13:41,272
as I hover my mouse over
it, it says Add a link.

320
00:13:41,272 --> 00:13:44,375
If I click on that,
that's actually what I use

321
00:13:44,375 --> 00:13:46,574
to add links between my devices.

322
00:13:46,574 --> 00:13:49,720
So, for example, let me
go ahead and unclick it,

323
00:13:49,720 --> 00:13:53,945
let's say I want to connect
these routers together,

324
00:13:53,945 --> 00:13:57,680
and let's say I wanted to
connect R1 and R2 via Ethernet.

325
00:13:57,680 --> 00:13:59,680
So I click my Link tool,

326
00:14:00,648 --> 00:14:02,554
and now, notice that my cursor

327
00:14:02,554 --> 00:14:06,658
turns into a, like a plus
sign, sort of like a...

328
00:14:06,658 --> 00:14:08,333
I don't even know how to describe that.

329
00:14:08,333 --> 00:14:10,756
But, basically, you just
click on one of your devices

330
00:14:10,756 --> 00:14:13,098
like my router, and now it shows me

331
00:14:13,098 --> 00:14:14,841
all the interfaces in that router.

332
00:14:14,841 --> 00:14:18,677
So, I say, all right, well, I
wanna select FastEthernet0/0,

333
00:14:18,677 --> 00:14:20,323
and now I'm creating a link,

334
00:14:20,323 --> 00:14:22,827
I go up and click the other router,

335
00:14:22,827 --> 00:14:25,922
and I wanna connect
him to FastEthernet0/0.

336
00:14:25,922 --> 00:14:30,091
So now I have just created a
link between these two routers.

337
00:14:30,091 --> 00:14:31,656
Oh, between router two and router four,

338
00:14:31,656 --> 00:14:35,279
I wanna connect them via
serial, so I click on him.

339
00:14:35,279 --> 00:14:39,282
Serial 2/0 connecting to Serial 2/0.

340
00:14:39,282 --> 00:14:41,223
And as long as this link is selected,

341
00:14:41,223 --> 00:14:43,070
notice it's got the little
sort of stop sign there,

342
00:14:43,070 --> 00:14:44,865
as long as that's depressed,

343
00:14:44,865 --> 00:14:48,747
any time I click on a
device, it'll allow me to

344
00:14:48,747 --> 00:14:51,594
connect links from that
device to another device.

345
00:14:51,594 --> 00:14:53,020
And then once, I'm done,

346
00:14:53,020 --> 00:14:54,922
I just go back to the Link button again,

347
00:14:54,922 --> 00:14:57,394
press it, and deselect it.

348
00:14:57,394 --> 00:15:00,391
So that's, just to recap this section,

349
00:15:00,391 --> 00:15:01,824
and then I'm gonna wrap up this video,

350
00:15:01,824 --> 00:15:05,490
so far what we've talked
about is the workspace,

351
00:15:05,490 --> 00:15:06,570
and this is where I'm actually gonna

352
00:15:06,570 --> 00:15:07,843
start working with my devices,

353
00:15:07,843 --> 00:15:09,569
this is where you drag
and drop everything,

354
00:15:09,569 --> 00:15:13,014
and this is where you form your topology,

355
00:15:13,014 --> 00:15:14,556
and if I saved my project,

356
00:15:14,556 --> 00:15:15,882
right now, I'll just go ahead and do that,

357
00:15:15,882 --> 00:15:17,465
File, Save Project,

358
00:15:18,629 --> 00:15:21,829
and remember what I
named it, CCNA Project1?

359
00:15:21,829 --> 00:15:23,558
Well, now, if I go into my folder

360
00:15:23,558 --> 00:15:28,252
where my projects are located,
let's go ahead and do that,

361
00:15:28,252 --> 00:15:29,085
C: Drive,

362
00:15:29,960 --> 00:15:30,793
Users,

363
00:15:31,960 --> 00:15:32,793
my name,

364
00:15:34,155 --> 00:15:34,988
GNS3,

365
00:15:36,019 --> 00:15:36,852
Projects,

366
00:15:37,899 --> 00:15:40,193
and there it is, CCNA Project1,

367
00:15:40,193 --> 00:15:45,023
if I double-click that,
here's the latest screenshot.

368
00:15:45,023 --> 00:15:49,885
So there's the PNG image of
what I've created so far.

369
00:15:49,885 --> 00:15:54,694
Now, notice, what if I, let's
go ahead and go back to this,

370
00:15:54,694 --> 00:15:58,537
what if I move this around
a little bit, like that?

371
00:15:58,537 --> 00:16:02,836
Okay, is that automatically
gonna update that PNG image?

372
00:16:02,836 --> 00:16:04,919
Well, let's refresh this.

373
00:16:06,402 --> 00:16:08,861
Refresh, open it up,

374
00:16:08,861 --> 00:16:10,584
nope, it didn't.

375
00:16:10,584 --> 00:16:12,521
So this PNG is only gonna be updated

376
00:16:12,521 --> 00:16:15,440
if I go to File, Save Project.

377
00:16:15,440 --> 00:16:17,590
Then it will take a new image of

378
00:16:17,590 --> 00:16:21,397
whatever this is currently
looking at in the workspace.

379
00:16:21,397 --> 00:16:22,972
So we've talked about the workspace,

380
00:16:22,972 --> 00:16:24,971
and we've talked about the Device toolbar,

381
00:16:24,971 --> 00:16:26,149
and what each of these buttons

382
00:16:26,149 --> 00:16:28,816
on the Device toolbar represent.

383
00:16:29,673 --> 00:16:31,608
So, in the next video, I'm gonna go into

384
00:16:31,608 --> 00:16:35,096
some of these other areas
of the GNS3 application

385
00:16:35,096 --> 00:16:36,865
and the various different
parts of the screen,

386
00:16:36,865 --> 00:16:39,312
and we'll talk about what they mean.

387
00:16:39,312 --> 00:16:42,479
(light digital music)