(intense music)
- Okay so let's start Part 1 of this lab
by actually bringing up GNS3, naming our project,
and then importing our various nodes,
dragging and dropping them where they need to be
and then connecting them via the add a link tool.
So let's go ahead and start doing that.
So if you haven't already done so,
I would recommend that you take a screenshot
of this image so that you can follow along with me here
because I'm gonna move this off
to my other screen as I work.
Okay, so let's go ahead and start GNS3
and we will name this project.
You can name it whatever you want,
I'm just gonna name it CCNA-Switch-Lab.
And then I'll save it.
Okay, so let's start building this up here.
According to our topology we need three routers.
Let's go ahead and drag and drop those into place.
One, and I'll just use this Shift key here
to drag and drop two more.
Alright.
There we go.
Okay, we're also gonna need an EthernetSwitch node
so that'll be over here in the section on browse switches.
So there we go, EthernetSwitch.
Drop that into place.
But currently, we don't have the EtherSwitch router
that has the EtherSwitch module in it
so I need to add that.
So what I'm gonna do is I'm gonna go here
under Edit, and Preferences.
Edit, Preferences.
And then here under Dynamips I'll select IOS routers,
and then I'll select New.
I'll use the same image I'm already using
but this time I'm gonna select the EtherSwitch box.
I'm gonna give it the appropriate amount of memory
which I think is 256 megabits per second
according to Cisco's feature navigator.
And I'm not gonna populate any of the other slots,
I'm just gonna leave it with the 16 port EtherSwitch module
because I don't need to use this thing as a router at all.
And then lastly I wanna compute the idle PC value.
This'll take about a minute, maybe a little bit less.
There we go, we have an idle PC, so let's OK that
and Finish,
Apply, OK.
And now we should have available to us
our EtherSwitch router, so let's drag that,
hit the Shift key, let go, and yes, I do want two of them.
Alright, let's go ahead and add in our links.
So Router 1 will use his FastEthernet
and that's gonna end up being our trunk
and we'll connect that to FastEthernet1/0 here.
Now remember, because these EtherSwitch routers
are routers, they are 3725s, the first one
or possibly two interfaces are actually routed interfaces.
They don't do switch port commands or spanning tree
commands or anything like that.
So for the purposes of this lab, we're gonna stay
away from those first two interfaces.
Okay now let's go over here to Router 2, same thing,
connect his FastEthernet to the first switch port on here.
Okay, now let's connect our redundant links up here,
so we'll start at the bottom, FastEthernet1/15
will go to FastEthernet1/15 and FastEthernet,
let's just say, 1/9 will go to FastEthernet1/9.
Alright so we're almost done.
Now before we start connecting stuff up to the switch,
the EthernetSwitch, there's a problem.
Because if I right click on this and hit Configure
to see what it currently is, all of its interfaces
are access ports, and they're all in VLAN-1.
And as we talked about when we first introduced this node,
you can't change the characteristics
of an existing interface.
You either have to delete that interface
and then recreate it with the characteristics you want,
or add a brand new interface so what I'm gonna do is
I'm just gonna delete all of these.
Alright, that looks alright.
And now, remember, according to our diagram here,
we needed to have a total of three interfaces
on that Ethernet Switch Node.
One of them had to be 802.1q,
one of them had to be an access port in VLAN-2,
and the other one had to be an access port in VLAN-3.
So we need to be aware of that
as we create these interfaces from scratch.
So here we go, I'll have interface 1
be my access port in VLAN-2.
I'll have interface 2 be my access port in VLAN-3.
And I'll have interface 3 have a native VLAN of 1
and be an 802.1q trunk.
Apply, OK, now before I forget,
I should write that on my diagram.
So this is interface 1, this is interface 2,
and this is interface 3, alright.
Now when you do it in your own lab,
you can use whatever interface numbers you want,
but it is important that you have the dot1q trunk
and the VLANs where they're supposed to be.
Alright so let's go ahead and connect our interfaces here
so Router 3 connect his FastEthernet port to port 3,
which is my trunk.
Router 2 connect FastEthernet0/1 to port 1,
and connect FasteEthernet1/0 to port 2.
Alright, and that completes our physical connection.
Everything is where it needs to be now
so at this point I can minimize that.
And I can zoom in a little bit to see a little bit more.
Now before I finish this off, let's go ahead
and click on the Show/Hide interface labels
so that we know which interfaces are where.
And of course they get a little bit sloppy
especially when some of these interfaces
are so close to each other.
Okay so this is why I drew everything on my white board
because I know that 1 is here, 2 is here,
that's like that, and...
Now I don't remember which interface on Router 2
connected to the switch but fortunately I can just hover
over Router 2 and it'll tell me.
It says that FastEthernet0/0...
Let's see here, here we go.
FastEthernet0/1 is connected to port 1, okay
so FastEthernet, let me just hover over that again
in case you couldn't see it.
You can notice down on the bottom.
Well, it got rid of that when I entered this tool,
but you can see it right there.
Come on, come back up.
There it is, FastEthernet0/1 is connected
to switch 1 on port 1, that's what I needed to see.
So 0/1 goes up here, 1/0 goes down here,
let's just move his name off to the side a little bit.
Okay, and if we go up here,
we just know these numbers match on both sides.
Okay, and that concludes this section
on building the physical topology.
(intense music)