Hello. My name is Dustin, and today will be continuing our beginner network infrastructure. Course we have the routers. Let's get started.
So what is a router?
Rounders operate at layer three of the O S. I model, meaning that they focus on I. P addressing routing and fording packets to their destination
in your home. A router may perform many more duties, like working as a. D. C P server and assigning I P addresses to devices on your network like your TVs, gaming consoles, computers, laptops, even your phones.
Typical home robbers usually also provide wireless capabilities as well.
In an enterprise setting, routers typically only perform the routing duties basically 14 packets in between networks as needed. Routers can learn routes two different ways, statically or dynamically. A static route is one that the network engineer has
input directly into the router.
A dynamic route uses some sort of routing protocol. My O S. P F R E i g R P. To share the routes and the different networks between routers
on the right Here we have a picture of a typical links. This home router. It's a nice small device, has some ports in the back. And, as you can see, the three antennas sticking up, which means it should provide wireless networking as well.
So on the left, we've got our network maps symbol, which you should start to recognize these, er,
the 33 d blue circle for a router. It's got two arrows pointed in and to Eros pointed out.
Next to that, we've got a standard Cisco router. The top picture is just the power connector you can see, and then the bottom has your actual Ethernet connections. And that's the back or the front of the town. How you're looking at it.
Below that, we've got a smaller Cisco router. As you can see, it looks like just a one. You, Ah, rack router.
And then all the passions are gonna be in the back and then to the right of that, we've got a small Cisco router, which would be used in a home device or possibly a small office that doesn't need as many connections in that one is the one that would perform a lot of different
Whose question How does a router differ from a switch?
And I'll give you a second to think about this, but we just wanted over the kind of the basic information
and the number. One way a router differs from a switch is a router Operates on Layer three. Most switches operate on layer, too, although there are some that also
can perform some layer three duties
grounders route packets in between networks, while switches handle the internal networking basically on the same network.
Switches typically have many more Ethernet ports as well. Rounders are usually only connected to other routers or possibly just a single switch
setting up a router.
Setting up routers air typically much more complicated than setting up switches and hubs.
The first step to setting up a router is plugging in the power and powering on the device. Once the device comes on, you'll want to enter enable or e N to go into your enable moat,
and then you'll do the calm 50 or configure terminal command to go into the actual configuration of the router. And this is where you can set the hosting what services you want. Um, turn your ports on and off,
and then last thing, you'll just plug in your Ethernet connections and verify that your configuration is working. So let's go ahead and hop into Cisco Packet Tracer
and we'll show you just a real quick configuration on around her.
So we're gonna hit the Red X here. We're gonna bleed our switch in our PC if you don't need those anymore.
And if we go over here to our network devices,
you can see the router. It is the circle. We will just do the 29 11. You will drop that in there.
And while we're waiting for that to boot up because it will take him in and we're gonna throw a computer and as well
and let's one connect them.
All right, So as you can see again when you cook the router, it does show the physical set up for a view of the router itself. You can actually press the buttons to turn it on or off. Plug in different cards.
Really Anything you could do. The real robbery can do kind of in a virtual environment here.
So if we can go to config
and let's go to our seal, I actually get the full screen. So the first step, whenever you turn on a router. Um, is it asked you? Would you like to enter the configuration dialog? And it's kind of their own automated set up. I typically never use that. It is something you may use depending on your environment,
but so I'll go ahead and enter.
As you can see, it automatically did the no for me. But so right here we are in just our regular
config or ah, command line interface, and you can see where's in the basic mode, says Router. With our little arrow,
they go into enable or just even that will take us into our privilege mode. And again come 50.
That takes us into our actual configuration mode. So again, the first thing I always do is I set up our host name and we're just gonna a missile in our one for broader one.
And let's go ahead next to that.
And as you can see, it has now been configured,
name those the same there. So if you remember when we did our switch, we just plugged it in and it was automatically working.
This one is not, and it's because with a router, you actually have to configure the interface to be up. So let's go ahead and go back in here. And I think that was Gig Juan. Let's see
Well, Steve, gig 00 actually, so you can remember them.
So if we go into enable and then come 50 for configuration on, we want to do interface or I N t g. And it was zero slash zero.
You can see we are actually in the interface configuration now, and the first thing you want to do is just no shut
and with our switch, it automatically change that up. But as you can see here, we have to manually change that toe up.
Now that it's up, when you have are green lights in, that connection is good. Um, one thing I did not mention in the switch configuration is once your switch or router, any of the network devices is actually configured. You'll want to save that configuration to the switch or router. Um,
that way, if you reboot it, it's still gonna save that.
It's really easy to do from this command you should probably be familiar with. And all you want to do is coffee, run,
start and that's the short command with long command is copy running config
If you enter to, let's see
we'll take your inner configuration copying one star.
so as you can see here, I'm still actually in the configuration mode and you you can do it from there, but you need to throw it do command in front of it. So we just exit out back to our enable mode and I typed copy, run, start,
destination file, name started. Config. You don't want to change that. So just hit enter,
and it's building that configuration. Okay? And here you could do the show. Ron, if you remember that and that shows the current running config. So all we did is we edited the host name to rather one,
and everything else is out
and he can see interface
It doesn't have the shut down command like the rest of these deal,
because that is because we did do that. No shut or we negated that shut command opening that port.
So it was just a really basic configuration on a router again, When you perform any configuration, you'll want to need to know what you're actually gonna be doing. But in today's video, we discuss what routers are some of the typical functions that they perform,
what they look like from your small single office or home routers, always to your big enterprise level routers. And we just did a real basic configuration on Learned how to save that to the router. Up next, we're gonna go over servers.