In this video we're going to go a little bit more in depth about the Internet
protocol and kind of talk to you about packets or data grams.
Same thing.
>> Right.
>> So, let's take a look at kind of what the Internet protocol is.
Now, a lot of this information up there is just pulled from Wikipedia.
Feel free to go search Internet protocol in your search engine and
go to the Wikipedia page.
You'll find a lot of this stuff up there,
this is kind of just a condensed form of it.
But yeah, so if you want to take a look at the screen here,
you can see just kind of the basic points of what Internet protocol is.
And what is it?
Well, it's the principal communications protocol for the Internet Protocol Suite.
And there's that terminology.
>> Right, that we mentioned before.
>> You remember, it's the same thing.
We're just saying that- >> It's a way for
computers just to talk to each other.
>> Yeah, that being said, the Internet protocol is kind of what's used,
like he said, to take a computer, a device, right?
That's hooked into a network and then have that device or
that network hooked into other networks.
So that's kinda basically what the Internet is.
It is just a bunch of networks connected to each other working over this
Internet protocol, right?
So I think that's how it first started.
>> Yeah, it's just a way to standardize all the messages and sending,
receiving, cuz if you have different ways to encode it,
it would be very difficult to understand everything.
>> Yeah, it's universal, right?
They had to come up with version for this, but this is how it started.
You call I think a single network, the intranet, right?
So you could have a university that functions on their own intranet, and
that's a private version of the Internet and then they take their network and
they hook it up to the Internet where all these other intranets or
networks are hooked into and you get, and they're all working under the same
protocol basically to send and receive their packets of information.
>> Right. Right. And then you get a giant web of everything.
>> Yeah.
So we're gonna be working with the same protocol using our
VoIP- >> Right.
>> Software. >> [LAUGH]
>> Right.
>> Or our void per application.
>> Right.
Great, so as you can see there, we talked about this in the last lesson, but
right now you have two different versions to choose from for the Internet protocols.
You have IVP or IPv4 and IPv6, what happened to one, two, three and five?
>> [LAUGH] >> Who knows.
>> Who knows, yeah. No, this is the most prominent one so
you'll basically see those floating around these modules and on the Internet.
All right so, the datagram construction kinda talking a little
bit more in depth about Internet protocol or packet, right?
You can see on I guess the second level from the bottom,
you have IP header and IP data.
So I'm gonna kinda shrink this.
We're gonna talk a little bit more about it.
IP header and IP data, every packet or datagram has a header and
a payload, so essentially a header telling it where it needs to go.
[COUGH] And then a payload which is data, information it wants to send.
Going a little bit more in depth on this particular packet as a whole, if
you look at the very top the application side, well this is the application layer,
this is where kind of, the interaction is happening, so to say.
Then you have the transport layer where it gets all of this stuff ready to
be transported, ends up at the IP layer and,
or the Internet layer where it sets the addresses,
gets it all rounded up and throws it out, and then the hardware level.