WEBVTT

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 This video is part of the CCT routing
 and switching curriculum.

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 This comes from section 4 of the Blueprint
 of CCT routing and switching.

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 My name is Keith Bogart and I will be
 your instructor for this session.

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 So as I did in the previous video, I'm
 going to take several bullet points

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 from the CCT, RNS Blueprint in section
 4 and roll them into this particular

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 video. So that's why I call this
 connecting to network equipment.

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 But really the four bullet points we're
 going to be talking about are

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 as follows. Number one, make a physical
 Ethernet connection from a laptop

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 to a Cisco device's Ethernet
 port using the correct cable.

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 So I'll show you how to do that.

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 Locate and use the Windows
 command prompt.

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 Configure network settings for the
 Ethernet port on your laptop, such

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 as the IP address, subnet mass, default
 gateway and establish a connection

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 with Ethernet ports
 on Cisco equipment.

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 And lastly, connect, configure and
 verify the operational status of a

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 device interface.

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 So you can see there those are the various
 different bullet points we're

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 going to talk about.

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 So step number one, making the physical
 Ethernet connection from the laptop

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 to the Cisco device's
 Ethernet port.

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 So we talked about in a previous video
 the different types of Ethernet

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 cables. And I don't have that here
 in front of me, but you may recall,

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 let me ask you. What were the different
 types of Ethernet cables?

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 There were two sort of variants, just
 two for connecting to devices.

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 You remember what
 they were called?

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 One was called a crossover cable.

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 The other was called a
 straight through cable.

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 Hopefully you got those right.

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 So part of the previous videos was talking
 about which cable do you use

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 under which circumstances?

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 And now we're going to
 put that into practice.

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 So depending on what I'm connecting my
 laptop to will determine what kind

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 of cable I need to select.

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 For example, if I was to connect my
 laptop directly to the Ethernet port

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 on a router, well, from an OSI layer
 standpoint or viewpoint, routers

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 and laptops reside at pretty
 much the same layer.

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 They're both like layer
 three and above devices.

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 And remember, if we're connecting two
 devices that are at the exact same

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 layer, we need to use
 a crossover cable.

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 So if I'm connecting two routers back
 to back, two switches back to back,

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 or in this case, my laptop to a router,
 I'd have to use a crossover cable,

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 which was pins one to
 two, three to six.

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 So you actually want to
 take a crossover cable.

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 And if you're not sure, take one like
 this little one right here and hold

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 up the connectors to your eyeballs
 and just check out the color scheme

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 and make sure it actually
 is a crossover.

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 Now my case, let me back
 up here for a second.

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 Think about this for a second.

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 Most laptops and PCs and even servers,
 do you think they connect directly

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 to router interfaces?

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 Sometimes they might, but the
 vast majority of times, no.

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 If you're talking about a wired connection
 from a laptop PC or server,

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 most likely that's coming connecting
 to a switch's port or a switch port.

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 So those are different layers of OSI
 model switches are considered layer

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 two, laptops and PCs are considered
 layer three and above.

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 So for that, a straight
 through cable.

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 So I've got a straight through
 cable right here.

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 I've already got one end of it plugged
 into the ethernet port on my docking

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 station. Here's the
 other end of it.

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 I've got a switch down here
 that you can't see.

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 It's already powered on and ready.


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 So I've got my terminal emulator
 here connected to that switch.

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 So I would simply take that and
 plug it in to my switch port.

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 Now I would start taking
 a look at that.

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 What I'm looking for are the
 LEDs on that switch port.

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 If there's no LEDs, if it just stays
 black, that means something's wrong.

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 Either I didn't plug it in all
 the way, the cable's broken.

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 I didn't plug it in all the way
 on my docking station or laptop.

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 Or maybe the net card within my
 operating system is disabled.

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 I'm not sure why that would be, but
 maybe somebody got in there before

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 you and actually disabled
 your net card.

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 Or maybe the interface
 is shut down.

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 For example, if I plugged into that,
 that interface and I'm watching it

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 and I'm watching it, and I'm watching
 it, if about 15 or 20 seconds goes

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 by and you don't see any blinking lights,
 you need to start checking those

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 things. First thing I would check,
 the easiest thing I would check is

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 to log into the device and say, okay,
 I know I just connected to fast

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 ethernet 0 slash 1.

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 I see that on the front
 panel of the device.

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 So show interface fast
 ethernet 0 slash 1.

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 And right here, it says this interface
 is administratively down.

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 So clearly there's no electrical energy
 going in or out of that interface

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 because it is down,
 it is disabled.

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 Another way I could have discovered
 that was due with the command show

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 interface status.

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 Now this command does not work on routers,
 but does work on switches.

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 And you could see right here,
 fast ethernet 0 1 disabled.

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 Or you had another command
 show IP interface brief.

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 I really like this command because
 not only can I see the actual state

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 of the interface, for example, fast ethernet
 0 slash 1, which is administratively

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 down, I can also see if the interface
 has an IP address or not.

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 So show IP interface brief.

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 So either way, nothing is going to happen
 on this interface until I bring

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 it administratively up.

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 So config T interface, the interface
 I'm concerned with, no shutdown.

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 And now as I'm watching it,
 the lights start blinking.

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 Now if you do that, no shut, and the
 light still, nothing happens, it's

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 black. Then it's time
 to number one check.

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 Did you actually type plug
 into the right interface?

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 Oh, my cable is plugged into
 fast ethernet 0 3, not 0 1.

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 Could be something
 as simple as that.

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 Or check the other things.

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 Make sure the cable securely
 plug in on both sides.

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 If it is, try swapping it
 out for a different cable.

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 If that doesn't work, last resort, go
 into the control panel of your laptop

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 and check the NIC settings.

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 Make sure your NIC card is not
 disabled and turned off.

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 Okay, so that is how you plug into
 the make a physical connection to a

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 port. Here's another indicator
 that actually worked.

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 Not only are the LEDs blinking,
 but on my laptop.

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 And it took about a minute
 or two for this to come up.

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 I got this. You guys have
 probably seen this.

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 This means that Windows recognizes
 that its NIC card is connected to a

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 functional network.

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 And it's saying, okay,
 what is this?

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 Home network, work network,
 public network.

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 You wouldn't see that if the
 NIC card was not connected.

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 So I'm just going to
 cancel out of that.

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 Okay, so next step.

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 Let's see here. Configure network
 settings for the Ethernet port.

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 We'll skip down to that one.

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 All right, so if you're connecting your
 laptop or PC to an Ethernet port

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 on a switch or router, let's say that
 you've, you've, you're testing a

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 router. Okay, you're actually in the
 lab and your objective is not to

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 permanently connect this laptop
 to the Ethernet port.

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 But eventually you're going to connect
 this Ethernet port on the router

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 to the rest of your
 production network.

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 And before you do that, you want to make
 sure the Ethernet port is correctly

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 configured. You want to make sure that
 when something plugs into it, it

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 comes up. You want to make sure that
 you can ping whatever IP address

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 is on that interface.

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 So we need to check in advance.

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 Is the interface correctly
 set up in advance?

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 And how should my laptop
 be set up to check that?

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 Now in this particular case, because
 I'm connecting to an Ethernet port

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 on a switch or a switch port, there's
 not a whole lot to see.

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 So for example, if I take a look at
 the running config, show run, and

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 I can actually say, I don't want
 to see the whole running config.

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 I just want to see the running config
 for interface fast Ethernet 01.

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 That's the one I'm connected
 to on my Ethernet port.

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 Take a look at that.

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 Now, if this Ethernet port is connected
 to a laptop or PC, the mode will

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 most likely be access.

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 It's not going to be trunking.

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 It's going to be something like private
 VLAN, if you get into that.

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 But most likely, it'll be
 switch port mode access.

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 Let's say you don't see that.

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 Let's say you look at that and it just
 says fast Ethernet 01, but there's

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 nothing under it.

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 It could still be an access port.

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 This just means it has been manually
 configured to be an access port.

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 In other words, we went into interface,
 fast Ethernet 01, and we use the

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 command, switch port mode access.

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 And by default, that will
 place it into VLAN 1.

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 Well, let's take a look at some
 of the other ones here.

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 Some of the other interfaces.

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 Okay, all these are operating
 a switch port mode access.

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 Let's say I did this.

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 Interface fast Ethernet 01,
 no switch port mode access.

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 And now let's take a look
 at the running config.

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 Let's use the up arrow on my keyboard
 to go through the command history.

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 All right, switch port
 mode dynamic desirable.

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 What? I thought it was supposed
 to be an access port.

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 Well, this just simply means that the
 interface, depending on what it's

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 connected to, and depending on what
 kind of signaling it's receiving,

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 can dynamically determine for
 itself what it should be.

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 So I need to figure out, okay, is this
 actually running as an access port?

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 Did it dynamically determine that?


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 I can use the command show interfaces
 fast Ethernet 01 and then use the

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 keyword at the end of that switch port
 show interfaces fast Ethernet 01

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 switch port. And what you're looking
 for is the operational mode.

0:10:10.820000 --> 0:10:15.540000
 Administrative mode means what
 is it configured to do?

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 Operational mode means what is
 it actually doing right now?

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 And sure enough, this is currently
 operating as a static access port.

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 Just the same as if I had configured
 switch port mode access.

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 The only difference is when the administrative
 mode is dynamic desirable,

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 that means theoretically this interface
 could become a VLAN trunk if the

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 other end of the cable was connected to
 something capable of VLAN trunking.

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 That's what dynamic
 desirable means.

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 But if I go into the interface and I
 type switch port mode access, that

0:10:50.620000 --> 0:10:54.960000
 means there is no possible way this
 interface could ever become a VLAN

0:10:54.960000 --> 0:11:02.260000
 trunk. It is configured as static access,
 which means if it comes up,

0:11:02.260000 --> 0:11:05.720000
 it has no choice but
 to be static access.

0:11:05.720000 --> 0:11:09.160000
 Now some other things that you're looking
 for here, if you take a look

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 at the show run output for that interface,
 you might want to verify what

0:11:17.140000 --> 0:11:19.560000
 VLAN that interface is in.

0:11:19.560000 --> 0:11:22.720000
 Now if you don't see anything and you
 mention a VLAN in here, it will

0:11:22.720000 --> 0:11:25.700000
 be in the default VLAN,
 which is VLAN 1.

0:11:25.700000 --> 0:11:31.400000
 If you want it to be in a different VLAN,
 let's say VLAN 2, well the correct

0:11:31.400000 --> 0:11:35.420000
 procedure is number 1, you want to make
 sure that VLAN 2 exists, so you

0:11:35.420000 --> 0:11:39.860000
 configure it. So I've just configured
 the group or the broadcast domain

0:11:39.860000 --> 0:11:43.860000
 known as VLAN 2, but there are
 no interfaces in that VLAN yet.

0:11:43.860000 --> 0:11:49.340000
 So now I would go into that interface
 and I would say switch port access

0:11:49.340000 --> 0:11:59.640000
 VLAN 2. And now if I use my show interface
 switch port command, you'll

0:11:59.640000 --> 0:12:02.540000
 see it's still operating
 as static access.

0:12:02.540000 --> 0:12:06.980000
 In this right here, this line, access
 mode VLAN, this says if this interface

0:12:06.980000 --> 0:12:12.340000
 is an access port, and it is, in this
 case, the VLAN it will be in is

0:12:12.340000 --> 0:12:18.200000
 VLAN 2. We can also verify that with
 the command show VLAN, shows you

0:12:18.200000 --> 0:12:24.080000
 all the VLANs you've got, and for example
 VLAN 1, all these interfaces

0:12:24.080000 --> 0:12:28.480000
 over here are access
 ports in VLAN 1.

0:12:28.480000 --> 0:12:31.900000
 And here we see that the interface connecting
 to my laptop, FastEthernet

0:12:31.900000 --> 0:12:37.140000
 0.1, is in VLAN 2.

0:12:37.140000 --> 0:12:40.180000
 So those are the primary
 verification mechanisms.

0:12:40.180000 --> 0:12:44.660000
 You could also do show interface, FastEthernet
 0.1, without the switch

0:12:44.660000 --> 0:12:49.440000
 port keyword, gives you totally
 different output.

0:12:49.440000 --> 0:12:52.720000
 Verifies is up and connected, that's
 the main thing that we're looking

0:12:52.720000 --> 0:12:54.700000
 for here on a switch port.

0:12:54.700000 --> 0:12:59.960000
 We can also see the duplex mode and
 the speed, so we can check that out.

0:12:59.960000 --> 0:13:04.260000
 And if we're having some problems on
 this interface, if we're trying to

0:13:04.260000 --> 0:13:07.780000
 troubleshoot, we'd look down here, and
 we'd be looking for some of these

0:13:07.780000 --> 0:13:13.360000
 counters like collisions or output errors
 to be rapidly escalating numbers.

0:13:13.360000 --> 0:13:15.280000
 Non-zero numbers are changing.

0:13:15.280000 --> 0:13:19.600000
 Now if you've got a non-zero number
 like a 4 or a 5 here, but it never

0:13:19.600000 --> 0:13:22.680000
 changes, that's nothing
 to be concerned about.

0:13:22.680000 --> 0:13:26.880000
 If you're having errors, you would see
 these numbers rapidly increasing

0:13:26.880000 --> 0:13:33.520000
 as you issue this command over and
 over and over again over time.

0:13:33.520000 --> 0:13:38.660000
 Okay, so that is connecting, configuring
 and verifying the operational

0:13:38.660000 --> 0:13:41.460000
 status of a device interface.

0:13:41.460000 --> 0:13:48.560000
 Now, if I'm connecting a laptop to
 a switch port, one of two things is

0:13:48.560000 --> 0:13:49.700000
 going to be true.

0:13:49.700000 --> 0:13:54.360000
 My laptop is going to obtain its layer
 3 information, its IP address,

0:13:54.360000 --> 0:13:59.300000
 its default gateway, its mask either
 via DHCP, like a normal client would

0:13:59.300000 --> 0:14:04.860000
 sitting in a cubicle or sitting in
 an office, or my device will have a

0:14:04.860000 --> 0:14:07.420000
 static IP address with
 static information.

0:14:07.420000 --> 0:14:10.860000
 Typically you would have that on a server,
 not really so much on a laptop

0:14:10.860000 --> 0:14:14.860000
 or a PC. So the first question you
 have to ask yourself is, okay, what

0:14:14.860000 --> 0:14:16.180000
 am I testing here?

0:14:16.180000 --> 0:14:20.680000
 Am I testing the ability of my laptop
 to obtain everything via DHCP like

0:14:20.680000 --> 0:14:24.760000
 a normal employee would get his or
 her information in the morning?

0:14:24.760000 --> 0:14:29.780000
 Or do I want to pretend that my laptop
 is a server statically given those

0:14:29.780000 --> 0:14:33.320000
 numbers and make sure it can
 connect to the network?

0:14:33.320000 --> 0:14:37.680000
 Let's go with DHCP first, since that's
 the default behavior of your laptop.

0:14:37.680000 --> 0:14:42.960000
 So if you go into your laptop and you
 go into your control panel, all

0:14:42.960000 --> 0:14:51.300000
 right, so here's my control panel, go
 into network and internet, and then

0:14:51.300000 --> 0:14:56.800000
 network and sharing center, right here
 I'll show you the various knit

0:14:56.800000 --> 0:14:57.740000
 cards that you have.

0:14:57.740000 --> 0:15:01.900000
 So in my case, I want to do change
 adapter settings, all right, so let

0:15:01.900000 --> 0:15:05.600000
 me zoom in on that so you can see it,
 change adapter settings right there,

0:15:05.600000 --> 0:15:12.680000
 and I'm concerned with my local area
 connection, right, that's my wired

0:15:12.680000 --> 0:15:17.440000
 ethernet connection, so I can right
 click on that, select properties,

0:15:17.440000 --> 0:15:23.780000
 and here's how I can
 configure that card.

0:15:23.780000 --> 0:15:27.660000
 Now, if my objective is I want to change
 some of the layer one or layer

0:15:27.660000 --> 0:15:30.660000
 two characteristics of my card.

0:15:30.660000 --> 0:15:35.660000
 For example, I want to give it a static
 speed or a static duplex or some

0:15:35.660000 --> 0:15:39.660000
 of the other, you know, ethernet protocol
 characteristics, then I'll click

0:15:39.660000 --> 0:15:42.540000
 on this configure
 button right here.

0:15:42.540000 --> 0:15:46.900000
 This lets me configure the physical
 and data link layer characteristics

0:15:46.900000 --> 0:15:51.100000
 of my net card. For example, here on
 advanced, all these things right

0:15:51.100000 --> 0:15:58.460000
 here, flow control, speed and duplex,
 I would not recommend changing any

0:15:58.460000 --> 0:16:01.940000
 of those things unless you have a very,
 very good reason for doing that.

0:16:01.940000 --> 0:16:06.940000
 So most of the time, we don't
 need to click on that.

0:16:06.940000 --> 0:16:10.400000
 So when we click right click, we hit
 properties, typically what we're

0:16:10.400000 --> 0:16:13.360000
 going to be doing is we're going to be
 looking for Internet protocol version

0:16:13.360000 --> 0:16:17.680000
 four, so select that, make sure
 it's checked over here.

0:16:17.680000 --> 0:16:21.280000
 That means the net card is running
 that protocol stack and then click

0:16:21.280000 --> 0:16:31.860000
 properties. This should
 be the default.

0:16:31.860000 --> 0:16:34.660000
 So we can see everything via DHCP.


0:16:34.660000 --> 0:16:38.500000
 So if you have correctly used the correct
 cable and you've connected up

0:16:38.500000 --> 0:16:44.120000
 to your network, and if your network
 is configured for DHCP, you should

0:16:44.120000 --> 0:16:49.220000
 have a DHCP address, default gateway
 and all that good stuff.

0:16:49.220000 --> 0:16:50.900000
 So how do we verify that?

0:16:50.900000 --> 0:16:53.560000
 Well, that goes to the other bullet
 point in this presentation, which

0:16:53.560000 --> 0:16:56.840000
 is using the Windows
 command prompt.

0:16:56.840000 --> 0:17:03.100000
 So from your start button, just type
 in CMD as in Charlie, Mary, David

0:17:03.100000 --> 0:17:08.660000
 or command, CMD, and that will give you
 your Windows command prompt right

0:17:08.660000 --> 0:17:14.960000
 there. And so now the command you're going
 to want to type in is IP config.

0:17:14.960000 --> 0:17:17.260000
 Now there's two permutations
 of this command.

0:17:17.260000 --> 0:17:21.380000
 There's this IP config, and that shows
 you sort of baseline information.

0:17:21.380000 --> 0:17:25.940000
 For example, we want to scroll up here
 to my Ethernet adapter, and sure

0:17:25.940000 --> 0:17:31.120000
 enough, I've got an IP address, 1112,
 and I've got a default gateway,

0:17:31.120000 --> 0:17:36.220000
 1111. Clearly that was given to me
 via DHCP because I didn't have that

0:17:36.220000 --> 0:17:38.200000
 stuff statically configured.

0:17:38.200000 --> 0:17:41.000000
 The other permutation of that command
 because we didn't see things like,

0:17:41.000000 --> 0:17:43.140000
 okay, what's the DNS server?

0:17:43.140000 --> 0:17:44.200000
 What's my lease?

0:17:44.200000 --> 0:17:46.060000
 How long is my IP
 address good for?

0:17:46.060000 --> 0:17:51.180000
 Well, I can get all that gory detail
 by typing IP config slash all slash

0:17:51.180000 --> 0:17:57.680000
 all. And now if I scroll up to that
 adapter, we see all that good stuff.

0:17:57.680000 --> 0:17:59.060000
 Here it is, Ethernet adapter.

0:17:59.060000 --> 0:18:02.900000
 We can see my Mac address,
 DHCP is enabled.

0:18:02.900000 --> 0:18:06.180000
 We can see here not only my IP address,
 but the subnet mass that was given

0:18:06.180000 --> 0:18:12.460000
 to me. When the lease was given to
 me, when it expires, my DNS server,

0:18:12.460000 --> 0:18:14.740000
 which is Google was given to me.

0:18:14.740000 --> 0:18:19.320000
 So that is how you can use the Windows
 command prompt to verify that your

0:18:19.320000 --> 0:18:23.460000
 network connectivity is good, and you
 received your layer three information

0:18:23.460000 --> 0:18:31.420000
 via DHCP. Now, lastly, what if I want to
 statically configure those settings?

0:18:31.420000 --> 0:18:37.980000
 Okay, so I'm going to go ahead and,
 oh, and before we leave that, one

0:18:37.980000 --> 0:18:43.000000
 other thing, so go ahead, I'm going
 to bring up my command prompt again.

0:18:43.000000 --> 0:18:44.960000
 Try to ping your default gateway.

0:18:44.960000 --> 0:18:48.100000
 If you've really got a correct setting,
 you should be able to ping that

0:18:48.100000 --> 0:18:49.380000
 default gateway.

0:18:49.380000 --> 0:18:54.460000
 And sure enough, I'm getting successful
 pings from my default gateway.

0:18:54.460000 --> 0:19:00.320000
 All right, what if I want to statically
 give myself an IP address?

0:19:00.320000 --> 0:19:03.840000
 All right, so I click right here,
 use the following IP address.

0:19:03.840000 --> 0:19:07.140000
 Now I know that I need to
 be in the 111 network.

0:19:07.140000 --> 0:19:11.480000
 So 111, let's just say 99.

0:19:11.480000 --> 0:19:15.040000
 I'll give it a subnet mass that's appropriate
 for this particular network

0:19:15.040000 --> 0:19:17.060000
 link I'm going to be connected to.


0:19:17.060000 --> 0:19:20.640000
 And I saw previously that my
 default gateway was 1111.

0:19:20.640000 --> 0:19:25.200000
 And I'll type in my preferred
 DNS server.

0:19:25.200000 --> 0:19:29.720000
 And if that DNS server fails,
 maybe a backup DNS server.

0:19:29.720000 --> 0:19:33.140000
 And now just hit OK.

0:19:33.140000 --> 0:19:37.560000
 Close that up. Now right now my CPU is
 going to have to sort of relinquish

0:19:37.560000 --> 0:19:41.680000
 the DHCP, get the
 static IP address.

0:19:41.680000 --> 0:19:45.700000
 And once again, let's use the command
 prompt to verify that it took that

0:19:45.700000 --> 0:19:47.600000
 static IP address.

0:19:47.600000 --> 0:19:55.760000
 IP config. And there it is, 11199.


0:19:55.760000 --> 0:19:59.200000
 That verifies it now took the static
 information, and I should still be

0:19:59.200000 --> 0:20:04.900000
 able to ping my default gateway.

0:20:04.900000 --> 0:20:08.560000
 All right, and that concludes
 this video.