Original subtitles

OK so let's see if we can configure this topology.

I'm going to start off by configuring the call 36 50 switch.

So this is a multilayer switch

which means that we need to configure multiple IP addresses on the switch and enable IP routing between

the villains so the first thing I'm going to do is create the V lines V Line 10 V Line 20 veal and 30

and V Line 100.

So show v lan should show us the V lands and there you go

we'll make this a bit bigger.

So again show v LAN and I'll use brief here.

Here's the command.

We can see that all interfaces are currently in the default villain.

We've got a v lines 10 20 30 in 100 configured but no interfaces are in those v lands.

So interface gigabit 1 0 20 this is the interface where our server is now a good check to use is to

show IP interface brief and verify that the interface is up.

That helps you check whether you're working on the right interface in your lab.

This interface is up up.

So that's a good sign.

So going to top search port mode access switch port access vlan 100 show interface gig 1 0 20 switch

port.

This will allow us to check that our configuration is correct on the interface.

So there's the show command this interface is enabled as a layer to port we're using static access it's

operating as a static access port.

In other words it's an access port and not a trunk port.

The villain used is vlan 100.

So that looks good.

So I now need to configure the other interfaces so before I do that show IP interface brief we can see

that these interfaces gigabit 1 0 1 1 0 2 and 1 0 3 are currently up show run shows us that after the

moment no configuration has been applied on the interfaces now these ports gigabit 1 0 1 1 0 2 and 1

0 3.

Need to be configured as trunk ports down to the switches so interface gigabit 1 0 1 switch port mode.

Trunk.

Notice you may get an error in the real world or on your switch depending what it is.

You may have to specify the encapsulation as dot one Q Before you specify switch port mode.

Trunk that often depends on the switch.

So you may need to set the encapsulation and then you can specify the motors trunk.

So going to do that on all three ports encapsulation is not one key mode is gonna be trunk.

Now show run shows us what we've done.

Notice each port is configured to use Ed one key and to use trunk King.

That's correct because we've been told to configure ports between switches as trunks.

That's also best practice in a layered to infrastructure so to prove that we could tap show interface

gigabit 1 0 1 switch port.

Notice on gigabit.

1 0 1.

There's the show command on this port.

It's administratively configured as a trunk.

It's operating as a trunk encapsulation used is a dot one key native vlan is VLAN 1 which is correct.

So what we've done thus far is configure the three ports to the access switches as trunk ports we've

configured the port to the server as a access port in vlan 100.

The next thing we need to do is configure switched virtual interfaces or SFE eyes to enable into VLAN

routing VLAN 1 is the default villain it's currently down so I need to enable that and I need to configure

the switch with IP address 10 dot one dot 1 2 5 4 slash 24 mask per hour instructions the other SVM

eyes or switch virtual interfaces are gonna have these IP addresses so interface VLAN 10 IP address

10 dot wonder tender to 5 4 slash 24 mask no shut interface VLAN 20 IP address tendered 1 to twenty

two five four no shut now the interfaces are coming up but from experience I always no shut the interface

there's going to be no harm in doing that if it's already up that's great but if it's down we are ensuring

that the interface comes up

so there's no problem doing that just to be sure

interface VLAN one hundred ten one one hundred two four for it's nice 24 mask no shutter the interface

okay so show IP interface brief notice we have interfaces up noticed my mistake I configured VLAN 40

that's not required and notice the SVR is down because no interface is configured in that V LAN and

that a villain doesn't exist in the villain database so going to remove that XVI

so interface VLAN 40 is removed.

Show villains shows us that VLAN 40 is not in the villain database.

So again if I created interface of Ilan 40 no shut to that show IP interface brief would show me that

the interface is down because of that VLAN doesn't exist in the veal and database you've got to have

the veal end and the veal and database for the switched virtual interface to come up so again I'll remove

that no interface VLAN forty okay.

One thing we still need to do on the call switch is enable IP routing IP routing is not enabled by default

we've got to enable IP routing to allow the switch to round from one XVI to another so as soon as you

start creating multiple SFE eyes and the switch is gonna be your layer three switch all the switch that

does the interview and routing you must enable IP riding on that switch.

Okay so at this point I want to save the configuration of the switch let's configure the access switches

and then we'll be able to test whether the core switch is configured properly.