All right.
Well I'm back.
Let's get into it.
Let's get a visualization and legacy that where I got this was from Cisco's this C.S. CCN as anyone
wanted at 25 a visual guide.
I got this image from their book.
Yes I did.
All right.
Because they are the ones they're putting this out.
So I'm giving you the information.
All right.
Here we see our oil model.
We have seven layers.
You have the application the intelligence engine transport network doing physical.
All people seem to need Domino's Pizza.
That's the way I remember it.
Every single time all people seem to need doublespeak So we you more scientific minds.
All people need.
All people seem to need data processing whatever word makes you happy as long as you remember it we're
OK.
All right.
As you can see now before we keep going.
We keep calling this TZP happy.
That's what it is.
But they also call it the deal the mom because one of the first was the one that created it.
They try to take there when we're up on our name on it.
And then this.
They came out the powers that be came out and said that these if every month.
OK.
Well the Eleusis or whatever.
All right.
So anyway so the office model.
Anything that happens in these three layers maps all over to both the Old and Neal TZP IP model in the
application layer.
So when you're talking about the application layer you're talking about a.p as NCP c.a.p telnet DNS
all these things are they that you would check on here or invasion.
Anything beyond the formatting.
OK encryption Niekro isn't all that right here.
Session Dyalog control right.
Dialog control.
OK so last in your troubleshooting.
For whatever reason portrait numbers in nature.
There you go right there.
The Akbar's three lines of the Oist I model maps or to boil the all and new CCP IP model.
OK.
Application layer the transport all the way across transport all the way across those two poles where
you should be called but it's a transport layer.
So athing dealing with TZP uty segmentation why windowing acknowledgements all these things Yuriko it's
happening right here.
OK.
I think earlier on when we get to an hourglass or look at network internet but now in the newer model
they don't call it Internet now they call an hour
whatever.
OK.
And now our new model so off is Larry no burglar all these new IP model Internet new TCAP at new TZP
T-model network OK.
What happens there.
There we deal with routers there with the idea addressing the other routing protocol to routing protocols
importante very unique you know this routing protocol where we'll get to docilely because it depends
while writing port to call using our is doesn't vector are using a lengthy.
Is it a path back there like BGP.
OK what is it that you're using or SPF.
Are you using multiple area single area.
Are we doing redistribution.
Are we doing Rahmat all these different things right in here.
OK right here.
They don't like that.
I want you to take a look at the debt ceiling and the physical as you can see here in the on and math
right to Legler.
But in the new one they broke it up into two.
They my or Bolpur it.
They don't leak and fail to go because that's your connectivity right there.
Frame's so switches labeling beds.
All that stuff is right down here.
OK.
So if you can't get through your day with it it is make it simple.
You can't get there.
What do you need to get through gateway.
And I believe our we know we have to do what our goals we need what our destination MAC address and
Mac address as we know is staging its own segment.
They don't go across the network.
So this is what we were testing and we're getting a reply.
If you're getting that framing coming now because if you don't and you don't complete it I know my IP
address.
I know my Some in math.
I know my gateway address.
I know my mac address what's my destination MAC address.
Was that router right there that you're plugged into.
Ok I need that in order to get to it.
So then the router really make a decision and layer 3 OK.
Look at his writing table and say OK I know you you're one of these like 3.0.
I'm going to send you over.
And they're counting on his feet and that is he can I get through if I see them.
Is can I get the gigabit.
Is he connected to wireless.
Is a coaxial.
Is it infrared.
There's a satellite.
I don't know.
All right.
Depending on the media depending on the type of information one other house is going out there.
OK.
But just to keep it simple everything there that are before it it's cereal.
There is no more so than just sends the that information across.
OK.
All right.
And you can tell as well here you know because normally believe it or not real world real world those
are thorny Laz's.
This is the real world.
Yes telecommunications major corporations leaving their cabinets all pain be driving on the road.
You know cell tower will down.
You see the cabin wide open.
Pouring rain.
He was plugged into the panels in there the larders exposed pouring down rain.
Real world non-terminating Well they swore that they did
did you switch off the board.
I sure did.
I thought that board game board OK how do we know this because somebody went out there put a little
dot on there.
So hey any just which other board.
OK.
None.
All right.
One other than if they say more of this will not sell real world.
All you need to know are you looking at.
We're going to be looking at.
So you look at it here's your TZP IBM Model or the old the model whatever makes you happy wherever you
want to call it.
All right.
The process of an application layer goes processes where I tell that.
But Dell is just walking down the rabbit hole goes down later on telnet FTT Albine S M P P P P and there
is more than just the ATP as NMT as a.p.
Oh my God is abreviation And if X and X window Y.
We know the majority I'm going to put things that we normally use like as SMPTE.
Tell that FTB you have the pain in the ass up here or in the host to host or transport.
We have GCP connection oriented.
It makes sure that the information that you're sending is getting is getting there and knows how to
get there because why you know acknowledgements that you write to get information.
Yes.
Good luck.
I'm going to send you to ribeyes OK.
I want to acknowledge if you need another one and I want to keep telling you about why we have this
three way handshake that's going on with TZP because it wants to make sure that the window side that
you're able to handle the information it would just automatically for you to send all the data that
you need you to be like.
Well I think I got it.
It doesn't really know it's connection oriented.
We use you be or not you have to be use UDP DNS use bold DNS uses both physically and UDP Wang there's
a usable way we use a TZP was doing any kind of DNS between domain controllers replication or any major
thing as above a hundred and twelve bytes.
Right but if it's under any unit it really for a user unity you're looking for a printer UniFi I be
doing something major to the internet nutter network.
Right.
I see Impey are.
We'll use We're going to configure a server we're you know reverse address or no are or ok.
I think the pinging that's where it is.
Trace route tracer path ping whatever Do we want to call it.
OK.
And I think the Sixth Pay we know more about Arbre anymore do we.
But I think also runs in there as well.
OK and all the running portable and all all the all the routers and layer 3 switches there.
What about Ellerslie switch.
Listen you have alerts the switch.
I'm happy for you.
You have routing capabilities.
OK.
That's it.
Let me deal with your company.
You better have a very good router if you want to network entire enterprise.
You may have your core routers and then you're like your Cisco dealer model that change as well.
But we're not going to get into that.
But you have your core routers right.
You have your distribution routers which could include switches and then you have your axis switches
which could be Larry Orlean's it was really up to you at home how you want to use it because you can
enable or disable the routing functionality and just be alert to switch.
Ok but here in the network access we're talking about even faster than a gigabit ethernet.
All right.
Taking our time off some backbones right.
We're not just talking about simple networking in the classroom or between floors and anything like
that with them on between buildings or cross you know going far far away.
All right.
So this is your new model these other layers.
This is the one I really want you to pay attention to because it shows you the comparison of all three.
They're both the S.E.C. IP.
But now this is the latest and greatest of that system made up all the TCAP IP model right here.
OK same thing.
Application transport.
Now its network and sort of just link its data link and physical.
They kind of separate it but as you can see they still map over will sing OK.
So you know all is you know what happens on each layer.
OK.
Now just nap more.
You know what happens on each other as well.
All right.
For watching the next.