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- [Instructor] Let's briefly
talk about the difference

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between static and dynamic addresses.

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A static IP address is one
that is configured manually.

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We, as administrators,
actually type in the IP address

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to important devices, servers,
and things of that nature.

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However, dynamic IP
addresses are ones that are

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configured automatically.

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Clients will normally get dynamic IPs.

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They will obtain their IP
information automatically

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from a DHCP server
somewhere on the network.

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So here we have a laptop and a server.

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Generally a laptop would be assigned

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an IP automatically by a DHCP server.

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So this would be obtaining
dynamic IP address information.

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However, the server itself,
we would normally configure

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with a static IP address so that we know

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what the IP address is and we
know that it'll never change.

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But it doesn't make any
sense to use static IPs

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on clients because there's so many

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and it would take so long
to manually configure those.

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So we set them up to automatically
get their IP information.

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Let's show an example on
a Windows 10 system here.

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And I'm in the network
connections window in Windows 10.

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And you can see, I have a lot
of network connections here

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but the important ones are this.

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This is my wired connection,
which is known as Ethernet.

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And this, which is my wireless
connection known as Wi-Fi.

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The wired connection I
have configured manually,

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it's a static IP.

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I want it that way so
that I know exactly what

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the IP address is and I can connect to it

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and make changes to it whenever I want.

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But the Wi-Fi connection
is configured dynamically.

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It's obtaining an IP address automatically

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from a SOHO router.

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So let's show the properties for each.

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Prod redo that sentence.

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So let's show the properties for each.

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If we right click on
the Ethernet connection

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and go to properties

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And then scroll down to
internet protocol version four

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and click properties, you'll
see the IP information.

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And you can see that we have
selected the radio button

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"used the following IP address".

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and I've already typed
in all this information.

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So the IP address for
this particular laptop

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is 10.42.0.250.

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And all the other information
has to be typed in as well.

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So this is a static IP configuration,

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it's manually configured.

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I actually did it.

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I'm gonna cancel out of these
and go to the Wi-Fi adapter.

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We'll right click on that
and go to properties.

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And once again, go down to

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internet protocol version
four and properties.

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Here you can see that it says

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"obtain an IP address automatically".

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And in fact, this is the default setting

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for Windows clients.

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Their TCPIP settings will be set

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to obtain an IP address automatically

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and obtain DNS server address
automatically as well.

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And so I'm actually
getting this information

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from the DHCP server on my network

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which is within a SOHO router.

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And if you wanted to see that information

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you could go to your command line.

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For example, we could go to the PowerShell

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and run an IP config slash all

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that'll show the information

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for all of our network connections.

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Now we have a ton of those.

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So we'll scroll back to the top here.

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And the main one I want is
the one called Ethernet.

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That's my wired connection.

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If we look here, it says

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DHCP enabled, no.

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Prod redo that sentence.

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If we look here, it says DHCP enabled.

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And here it says, no.

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No DHCP, we are not obtaining
an IP address automatically.

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I have configured it statically.

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And there's that address,

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10.42.0.250.

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So this is the statically
configured, wired connection

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known as Ethernet that we showed

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in the properties here
in this Ethernet device.

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And within our IP config slash all,

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if we scroll down and
look for our Wi-Fi adapter

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and here it is, it's a wireless
land adapter called Wi-Fi

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we'll see DHCP enabled.

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Indeed, yes, it is.

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We are obtaining an IP
address automatically

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for this adapter and I'm
getting it from my SOHO router

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which exists at 192.1.68.41.1.

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And the IP address that
that device has given me

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which we don't see in
the network properties

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is 192.1.68.41.101.

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The first IP within that DHCP scope.

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And it gives me everything
else I need as well.

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The default gateway and the DNS server.

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So there's a little bit of the difference

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between a statically configured IP

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and a dynamically configured IP.

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Now, if we take another look

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at our typical TCPIP setup,
which we showed in a.

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Prod redo that sentence
please, redo sentence prod.

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Now, if we go and review
our typical TCPIP setup

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which we showed in a previous video

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we'll see examples of both.

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This client and this client are
obtaining their IP addresses

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automatically from a DHCP server.

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This one is 1.92.168.1.73.

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And this one is 1.92.1.68.1.142.

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Where exactly that DHCP
server is, I don't know.

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Doesn't really matter to me
as long as those computers

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are getting their IP
addresses automatically.

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Could be at a SOHO router

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or wireless access
point or a proper server

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that's running DHCP server software.

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But that's the whole idea.

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We have lots of clients,
PCs, laptops, mobile devices.

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We want them to obtain their
IP addresses automatically

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so that we don't have to
configure them all one by one.

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However, a device like this
router or this firewall

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or this switch or these
servers and possibly printers

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they should normally be configured
with a static IP address,

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one that we manually configure,
and one that doesn't change.

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And that's the case with this router

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which is known as our gateway,
which is 1.92.168.1.1.

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We can figure that in manually

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so that we know it never changes.

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But again all these client systems,

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they should be obtaining their IP address

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information automatically so
that it streamlines the process

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and makes things more efficient
for us as administrators.

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So remember the difference,

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static IP addresses
are configured manually

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and dynamic IP addresses are
configured automatically.