All language subtitles for 4. Build a basic Cisco network

Now in a previous video I showed you how to connect to the console of a Cisco rod or switch.

But now let's actually build a basic topology Using Cisco rotors and switches.

So in this topology I'm going to add a 43 21 rider to my topology.

I'll add another one and then let's add a 36 50 switch to the topology to physically cable these devices.

I'm going to use a straight through copper cable from the first Gigabit Ethernet interface of the router

to the first gigabit Ethan at interface of the switch.

Notice how the switches start at 1 0 1 here.

But the router started gigabit.

0 0 0 now just to be consistent.

I like to say Cisco is inconsistent so depends on device to device the interface numbers really depend

on the devices.

So you just have to look at the physical devices.

Generally a switch starts at Interface one writer started interface zero as a general rule but things

do very sometimes.

I'll connect this port to the second interface on the switch.

Now the interfaces are down at the moment because the switch needs power.

So going to drag a power supply into the switch and what should happen is these should eventually change

colour but I can verify that things are working by clicking on the switch and going to see a lie.

And what you'll notice is the switch has now booted.

Now these will still be down because what I need to do is enable the ports on the routers another difference

between switches and routers is switch interfaces by default come up generally.

So as soon as you pull the switch on all the interfaces or enable but routing interfaces all by default

disabled or shut down you need to enable those interfaces by using the no shutdown command.

So on a router we would need to know shut the interface but before we get there I'd like to take you

through this initial configuration dialog.

Generally we would type.

No but I'm just gonna do it once.

I'm going to type yes here so that we can go through the initial configuration dialog and what it's

going to ask me is a whole bunch of questions like Do we want to enter basic management set up I'm going

to say yes we asked What is the name of the switch I'm going to say s one for whatever name I want to

use then we asked to set a password on the switch.

I'm going to say Cisco now a secret password uses what's called a hash.

It's a type of encryption but it's not encryption it's a hash.

But basically the password is encrypted so it's not easy to guess or see in the running configuration

or the active configuration of the device an older password was the enabled password.

I'll set this to Cisco ONE generally you shouldn't use that old password a V.T. y line or virtual terminal

password is a way to telnet or SSA to a device remotely.

So if you want to be able to SSA or Telnet to the device you need to have a password configured so when

to set that to Cisco.

Do we want to configure simple network management protocol.

I'm going to say no.

The problem here is it's asking you a whole bunch of questions.

In some ways it's easier just to bypass all of this and just configure what you want on the switch rather

than having to answer this quiz if you like.

Now we're told that here is a list of interfaces and we can see a bunch of interfaces on the switch.

We now asked into interface name used to connect to the management network.

From the above interface summary.

So I'm going to say gigabit.

1 0 1 for argument's sake into interface name to connect to the management network from the above interface

summary.

So try this one and paste that we asked do we want to configure an IP address for this interface.

I'm going to say no we're not asked Do you want to go to the Iaw prompt without saving this conflict.

And yes the conflict that it's generated so it's created a configuration for us including notice the

secret password being encrypted or hashed to use the correct term.

Here's the enabled password.

Here's the VDI password.

Here's the hostname and it's added some other configuration like no shutting this interface.

We can return back to the setup without saving this config and go through this nightmare again or save

this configuration to envy ram an exit.

I'm gonna just say skip all of this and press enter.

So seriously for the real world don't use that but I would suggest that you go through this just once

or twice using packet traces that you can see what it's like but generally don't waste your time with

us is not important for the exam and it's not important for the real world.

So I wouldn't waste a lot of time going through this go through it once if you just want to see what

it does but otherwise don't bother going back to our topology.

Interfaces are still down because on the router I'm going to go to the CLIA and I'm going to bypass

that initial configuration dialog and press Enter to get started now to configure the right of the first

thing I need to do is go to enable mode SOF type to enable and I'm using the shorthand here and what

I need to do is configure the interface on the right.

Now we don't see the interfaces because in packet tracer I've gone to options preferences and I disable

this option show port labels in logical workspace so I'll enable that now.

And as you can see now interface gigabit 0 0 0 on the road is connected to interface gigabit once were

1 on the switch so on the router I can type confetti to go to global configuration mode and then type

it which is shorthand for interface I'll press tab then I need to choose my interface which is gigabit

so I'm going to use g tab to order complete and then I need to put the interface numbering now you'd

need to know this.

So I'm going to use gigabit 0 0 0 so 0 slash 0 slash 0 again the interface numbers depend on the device.

So you just have to see what's on your device.

I'll give you a short cut to help you if you're not sure.

Very good commands.

So tight end to go back to privilege mode.

This command show IP interface brief will save you a lot of time.

So show IP interface brief will show me the interfaces on the rotor.

We'll talk about V Line interfaces later.

But notice gigabit 0 0 0 and gigabit.

0 0 1 are the interfaces on the router and I'm connected to the first gigabit interface.

0 0 0.

So again to configure the right and I'll go right out of the router so we can start again.

So press enter.

I mean user mode type enable to go to privilege mode or enable mode confetti to go to global configuration

mode.

I mean to use short cuts now interface gigabit 0 0 0 you could have typed that out.

Interface gigabit 0 slash zero slash 0.

I'm just using shorthand here or shortcut commands IP question mark.

Address will allow me to configure an address on the device I'll put two S's there just to make sure

that the full command is displayed.

I'll use an IP address like this 10 dot wandered wandered one space question mark what subnet mask.

Am I going to use going to use 2 5 5 2 4 5 2 4 5 0 and press Enter now hopefully you understand about

IP addresses.

If you don't please review the IP addressing section of this course I explain.

IP addresses and a lot of detail.

Now again this interface is by default shut.

Notice read I'm going to type no shut which is shorthand for no shutdown.

Notice as soon as I did that it went green and I'm told that the interface has come up type exit to

go to global configuration mode.

Let's give this router and names from the top host tab for hostname or one for the right his name is

are one type and and I should save my configuration by using the command copy running config startup

config and press enter to save the broadest configuration.

So what I've done is I've configured an IP address on this rather let's do something similar.

On the second router Now you might see that the names are not as I configured them so let's change that

to our one.

Let's change this to be S1 and let's change this to be or two.

That's just a visual name in Packet Tracer so click on the right to go to see a lie and I'm going to

bypass this initial configuration dialog because it's just a nightmare.

I mean user mode at the moment.

Notice the greater than sign typing type E and press tab.

Takes me to privilege or enable mode.

Notice the hash type C O N F as in configure a press tab the T tab so configured terminal.

Let's give the writer hostname so H O S T if I press question mark I can see the available command or

press tab now or two.

So that's the name of the rudder.

I'm going to type I N T tab interface.

Question mark.

I can see a list of available commands but I can't type fast Ethan 0 0 0 because that interface doesn't

exist on the router I've gotta use the right interface numbers.

Interface gigabit 0 0 0 0.

Once again I could look in packet tracer to see the interface number or if I type.

And once again use the command show IP interface brief to see a list of available interfaces on the

road.

Okay so Conti interface G tab 0 0 0 0.

Enter no shutdown to enable the interface ip address 10 dot wondered 1 or 2.

In this example slash 24 mosque type and W are old command but much quicker way to save the config of

the router.

Notice Green the side is green.

The side is orange because a switch uses what's called spanning tree to stop ellipse.

So we've got to wait 30 seconds for that to go green before we can ping from one side to the other.

It's gone green now.

So on right a 1 I should be able to ping rather to ping once again is basically sending a message saying

Are you there.

And then the device replies back saying Yes I'm here.

If it works this is a timeout.

Ping requires that the response comes back in a certain amount of time.

And in this case it didn't so timed out and then we get some successful responses on Rider 2.

I could ping right of one and that succeeds.

So I've not bolt a very basic network of a switch and two riders.

Can you do the same.

Please create a network like this and packet tracer using a switch and two rotors and configure the

riders with IP addresses and get them to ping each other.

Best way to learn networking is just to do it.

Bold apologies and try things in this course there are many typologies that I'm going to use to test

your knowledge and help you learn these technologies.

So start with a very basic topology like this and see if you can get it working.