Well, so let me bring the presentation, as I told you, we are all in from the different platforms.
Some are CCI written, some are CCP certified, somewhat canny.
Some are joining the networking class for the very first time.
OK?
So I don't want to disappoint anyone by straightaway taking up some VPN topic or some BGP topic.
So I would have told initially to every student who are taking the demo that I've had in the demo for
four or five classes.
It's all up to you to take the glasses off for five days and then decide whether if you want to enroll
or not.
So the main thing over here is I just want to take it from some point and then we will advance towards
the next level.
OK.
So the basic things will be all your session peaks, all or everything which is required for your session
also.
So some some basics and networking is what it will start from now on it.
So let me tell you, or let me walk through some slides.
OK, so this is one topic which we've been reading out, or we've been coming across from from various
CEOs or from long time.
OK, so what is?
Land or local area network?
So let me tell you, this is let's see, this is the office.
This is an office.
I'll go over inside an office.
I have multiple users, so let's see.
I have a user from sales team.
I have users from an engineering team.
I have user from I.T. ensuing.
So now these users will be connected to Cisco Switch.
This is this is course which.
Course, which is used to connect various end devices, it can be wireless devices, it can be soulful,
it can be laptop, it can be computer, OK.
There is good Ciscos, which is used only to connect and devices.
Now let's see if this user wants to access YouTube.
OK, now now switch cannot do that.
Now the switch cannot.
Thank you to Patrick somewhere to internet, which has to send that to a ragdoll.
OK, so this is a Cisco.
So someone who is accessing YouTube, let's see who types.
YouTube dot com.
The packet will be sent to the switch and the switch will then send to the reporter wrote it over.
You will know how to reach the internet so that it can access YouTube.
So basically your router will send it to your ISP.
OK, ISP are nothing but internet service provider.
So basically, let's see.
I have an internet service provider from Verizon.
OK, so this is how the land set ups is being created, so we have users, we have Cisco devices like
switches.
And if I talk about these devices, they are all end devices.
OK, so what?
OK.
OK, so these are all end devices.
OK.
Flights, cancelled, laptops, printers.
These are called end devices and devices are connected to a Cisco switch, which is called USB layer
two devices.
Layer two of OSA model.
Now this is a basic topic again of salience, OK, so Cisco's Switch Cisco Switch will be connected
to a router, which is a layer three device and then router will be connected to internet.
So let's exclude Firewall for now.
OK, so let's say there is no fire once, so there will be connected to your ISP.
Now this can be anything like Verizon.
It can be data.
It can be it.
It can be AT&T.
OK.
It can be any service provider.
And then the service provider will be connected to one more service provider.
They will be connected to multiple service provider.
And that's how you reach to the YouTube server.
OK, so this is a basic flaw.
And where do we see this?
We we normally see this within office premises.
Let's I have only one computer and one internet modem, so within our home setup.
A small scale office, so within within a single building or within a single premises, if I have this
kind of connections that I have users switches it out, that is part of plan.
OK, so what is the actual definition of land?
Is confirmed, confined to a single room, a single building or a group of three.
OK, so basically what it's like doing is it's connecting multiple workstation with personal computers.
This is a basic definition.
What is LAN capable of?
LAN is capable of transmitting data at very faster rate.
So whatever these people are communicating, so let's see if user one wants to send some of the file
for printing.
OK.
This will be very instant.
As soon as you send the print, come on, it quickly comes over here.
So that is that is what it is.
LAN devices are responsible or is capable of transmitting data very fast.
But the limitations of distance are very limited.
Right.
So whatever you see or learn, it will be within a building or within a floor.
You cannot have.
A land connection, let's say, from City.
E!
To a city B, which is on some other location, for example, let's say this is us and this is UK.
Now, this cannot be a land, we cannot call it as a land.
OK, so that is like I said, distance are limited, so this contributes to a land.
And whatever is within that, it contributes to second land.
And also, there is a limit on the computers of limiting the number of computers that can be accessed
to a single line, so what are the limits you?
The limits are.
Let's see, I have multiple computers.
OK.
All connected.
So everyone are transmitting the packets.
So there are chances we encounter some coalitions.
OK.
There are sensors we encountered the coalition when in the package are traveling at a higher rate.
So if we don't take care of all the settings on the interface?
OK, if I have left them half duplex.
So what happens is there can be coalition, no one stays a coalition, your network will be.
Facing slowness issue.
So these are some things which we see when there are multiple computers apart from those, we can also
see something called this art broadcast in the network.
What is our broadcast?
So let's say this computer is keep on sending or transmitting some packets and all these computers are
sending some packets.
Now, what is which doing, which is broadcasting them?
Or flooding them to all the active interfaces.
Now your switch and countless slowness.
And all of a sudden, if an actual bucket has to be taken down or taken from the switch to, let's say,
this fax machine that will be queued up.
OK.
It will be cued up because all all that are broadcast are piled up in front of the required packet.
Now they have to be cleared and then your actual data will be taken.
OK, so this is a problem which we normally see in land.
So what is the best practice we adopt in the first segment our land?
How can they segment with the help of VLAN Wilderness Virtual land?
So let's say I have four full five computers here.
How?
If I see?
OK, so there is any voice lag, OK, not OK.
So let's see, I segment my lad with the help of concept villains, so I create a villain too.
I say this is a part of Villain three.
I call it as a part of villain full fight and six.
Now what is the benefit of having villains now?
Now let's see if I have to send something.
OK?
No one else is going to get informed.
OK, because they are not part of my villain.
They're not part of my broadcast domain.
OK, so whatever I'm sending listed villain to is year, and this is also on the line now.
My pocket or my broadcast will directly come to this without engaging anyone else.
Now, now that makes less collusion in the network.
OK, and that is the best practice you make use of it.
We make use and we don't keep everything all distinct in a single villa.
If I have a single villain, they are going to cause me more collisions.
The network will be slow packets to collide and start showing as it dropped and a lot of other concerns.
OK, so what I'll do is I'll make use of that villain.
Villain is a virtual local area network at the same hardware infrastructures, but logically dividing
them.
OK, so basically logically, I'm dividing them.
So let's see.
This is a part of the tent.
This is a part of 20, 30, 40 50.
Now what happens if something I have to send, I can send it without even engaging or without even sending
the broadcast to any other violence?
OK.
So this is how we make use of violence in it in a local area network.
OK, let's go to the next slide.
Van, what is van here?
It's a wide area network.
OK, now, like I told you, land is restricted to a building or a particular office.
Alexi, this is my headquarter in us.
This is my branch office in Australia and this is my branch office in, let's say, Singapore.
And you want to connect all of them, all the branch services.
So what what are you going to make use of your vans?
One circuits that is nothing but your ISP service provider like your AT&T, Verizon.
You know, the like we have in India do.
We have Tata data.
There are plenty of van circuits.
So how is LAN LAN connected to another LAN segment via that?
So we will have Van who work here.
We will be having events that you do here.
We will also have events that occurred over here.
So we will have a couple of events at like three event to just demonstrate this.
But in reality.
It is not a single bank that can fix this and this.
OK, so let's see this site on the US site.
It will be connecting to its.
Van, similar similarly on this site, let's say this is Australia.
It connects to its van certitude.
OK.
And then these two vents will depend on other events.
OK, so totally we can see there.
There can be like 10 different circuits in one attics.
OK.
So I'll talk about this van secured in my next light.
So as of now, just take this point that to connect to or my people, but we need to have a van van
OK via the area network and example for van are all your ISP circulars.
OK, internet service service providers.
OK, let me take you to the next slide.
OK, this is a definition.
Here are some results from the Web.
OK, I look like my Android Mobile took some on started.
OK.
It took my voice recognizing and reading and started reading out what is one?
OK.
OK, sorry about that.
So yeah, so as I was telling, this is a definition for a wide area network.
So it's a large scale network that is not tied up to any single location like like in case of van.
In case of land, they are tied up to one single location, one single building, single flow, single
office van is something which is on a larger scale.
And if you want to connect to different land, we need to connect that.
Now what is binding?
It is facilitating the communication.
It is sharing that information and much more beef between the devices over uneven provider.
OK, so between the devices in the sense between two different LAN.
Units, so let's this is the headquarters and this is a branch office.
Now where is my one, my one issue and what is mine doing?
It is helping me to communicate between this and this.
It is helping me to share any file between these two.
It is.
It is via over on event provider.
I'll give and provide is nothing but your service provider, internet service provider.
OK.
Very important and very basic thing at the same time.
How are we all connected?
So let's see.
You guys might be from us, UK, Singapore, Australia and I being in India.
I'm presenting my screen to you guys.
And we are all connected.
We are all connected.
OK, so don't say we are all connected over on cloud, OK?
We are not connected.
Actually, we're on iCloud, OK?
The actual actual thing is we are all connected over UNinvite connection.
It might look you as a cloud.
It might look you like a satellite.
But in reality, we are all connected overbite.
OK.
Let me tell you how.
Let me just move on to the next slide.
So this is a diagram which I took for a submarine cable.
Demonstration.
OK.
So what exactly this image shows us, so let's say you are from United States, OK, from Canada or
the United States might be we have students from South Africa.
OK.
And let's see.
OK, so this is south us and this is America.
This is India.
OK.
Our we all connected.
We are all connected over optical cables.
So, OK, we are all connected or optical cables.
That is a vital connectivity.
We are not going to connect via satellite.
OK, if you guys thanks.
If you guys think that you guys think that we are all connected over on satellite.
Then that's the wrong assumption.
OK.
We are not connected or a satellite is for special purpose like defense.
Not certain.
Weather forecast.
OK, so they are used for it for a special purpose.
Let's say there is some natural calamity and another 13 has to send a satellite so that it can go and
start monitoring what is.
What is happening over on this satellite is for a special purpose, satellite is not used for the data
communication, let's say if I want to use Zoom service or if I want to use the YouTube or if I want
to watch a movie or on online, no satellite is not coming into picture.
It's all our life connection.
OK, so let's see.
I have a YouTube server somewhere here.
YouTube taught us, and if I am accessing YouTube channel or a YouTube website, so my traffic will
go across these optical fibers.
And then.
It will be picked up by your local service provider, OK?
They will be local service provider and also on my site, from my my desktop to my to this optical fiber.
There will be some local ISP provider, OK?
And these optical fiber once again are not belonging to a single or not.
There will be multiple or Nazia.
OK?
As these cables cross our different boundaries, the ownership also changes, so this will be somewhere
to Indian side.
This will be to other continents or all other continents, OK?
So basically, we can see like 10 to 20.
Service providers, ISP, service provider.
And also, you add these this one and this one, so totally like 20 service provider between India to
the US.
OK, so that was my point.
What I.
OK, fine.
So that was my point earlier that I wanted to show you that to land segment, OK?
To do different land segment.
If I have the advance that acute in between, that doesn't mean that we are straightaway connected with
the help of one fund.
OK.
Like in this case, we have in ISP's.
Similarly over here, we will have a local connection provider.
Also, we will have some local selection provider here and then they in abaddonn will have multiple
service providers.
OK.
So let me show you this website on real time.
Might be after the class, you can go back to this website, which is called a submarine cable.
And you yourself can see how these guys are connected.
OK, so you might be I missed out calling out.
Your country or you might be your state, so you can just see how you guys are connected to me over
on Zoom.
OK.
So let me pick one of the circuit providers from India.
So let's see some India.
I pick up one circuit.
So then I picked the circular.
I can read it out, all the details about this circular on my right side.
So this is a 28 kilometer of the cable and the owner is these people.
OK?
And if you just enlarge this, so basically you can see there will be different ownership.
OK.
So this this particularly links that from Japan, and it goes all over all over India.
We have all the Gulf countries and then we have it the U.K. OK.
And on this side, you can you can see the country based.
Segregation.
OK, so this is very interesting website.
You can just check some of the circulars.
OK, so some some circulars you can check, you can come back.
So this is how we are all connected or on optical fibers.
And one more interesting thing.
Let me show you, what do we have under submarine cables?
OK, so we call it a submarine cables, but do you know how the submarine cables are being placed or
where does this lie?
So basically, these lies under under, under the sea, under the ocean.
OK.
Because we connect the continent to continent, so continent to continent, we will have these oceans.
So basically, these cables have to be placed under the oceans.
So these are the cables which will be laid up inside the oceans.
And this is one of the project of sending the submarine cables below below the ocean.
These are divers who will go and place it.
We need OK.
So this is how they're going to clamp.
And this is a real demonstration of those cables that so that with regards to how we are all connected.
OK, now let's talk about the next connection medium.
So might be other than lined up for the day and we will start up from the next connection medium.
So this is one example of of an office.
OK.
This is one more example.
When we connect continents to continents or countries to different countries or remote, all those things.
This is within an office.
So what did I say?
If you see something within an office, then it's a local area network.
This can be one single office.
This can be one single building.
This can be within one single place or single it park or something.
And we see all different types of computers, users, IP phones, all all different IP related like
we see here servers or some printers, OK?
So they they if they are example for a LAN type of infrastructure.
OK.
And similar when we talk about two different LAN segments to be connected to different countries to
be connected, then we call such.
Thing is Wide Area Network are different countries or different groups of land units, we call it van
or video network.
OK, so.
Over over here, if I if I take you back on this slide.
OK.
And also, if I take you to this slide, I told you that these are all optical fibers.
OK?
And we also checked how how do these optical fibers look like?
So basically, optical fibers which are placed under oceans are in a huge diameters.
OK.
So these are protected with a lot of metallic casings, and they're very huge in diameter.
We cannot place this within our office.
Did you see any time this kind of cables placed inside the cable inside the office?
No, we don't do that.
OK, so what do we have or what cables do we see in this kind of network or in this kind of office setup?
What are the cables that we see?
If you see, some cables might be pointing out if you see this cable, the user is using some cable.
So we called these cables as ethernet cables.
It's also called this Archie fortified cable.
OK.
It's the Ethernet medium.
It's Ethernet technology Ethernet acknowledging, which was launched in 1980s.
Also also we call these as Ethernet Cable, or RJ 45.
So these are the cable that we use within the office or within in the land segment.
OK.
So these cables we can use to connect to the wireless access point or a server?
Our computers, laptops, OK, within LAN unit now when we have the submarine cables or when we need
the cables for submarine connections, we cannot make use of LAN.
OK.
We have to follow it.
These optical fiber optic cables?
OK, now first, let me talk about the Ethernet cable, which is used in the local area network within
the offices, so they have some color coding.
They come with some eight colors.
For players of color coding, which totally contributes to eight colors, OK?
There are multiple types of street over cable crossover cable rollover cable, so there are three types.
It was actually being launched in 1980.
OK, so basically they were launched with Cat two one Ethernet cables, but now we have in Cat eight,
we also have cat and five years that we had Cat five and Cat five e getting used in the office premises.
These are capable of of 100Mbps speed, but now we make use of Cat six guys six eight and guest six
e.
These are capable of all your fine gigabits to your 10 gigabits or 100 gigabit.
OK.
These are with high throughput.
It might be after a fight.
And yes, we can see other cables.
OK, but yes, eight nine 10 are not used for our office 4+.
They are used for different purposes and also they have very different design.
So these may not be used in the office.
Even after five years might be, then we have something else coming up like a cat or Jack Lemmon or
something like that.
OK.
And regarding one last topic before I wind up, this is about the optical fiber.
Optical fiber also has two different modes.
One is called as single mode and multiple single mode.
Then within the cable within the fiber, only one tree of data is passed that is called this multi.
So this single mode or this multi-mode, then we have bidirectional communication like on that side
as well as we are receiving on this site.
OK.
So there are two types two or two types of optical fiber.
Normally, optical fiber consists of these glass of properties, but since they are very low, they
are very, very much a case sensitive.
They can be easily broken.
They will be surrounded with at least six to seven different solid materials, which can properly protect
these glass material from getting broken.
OK.
Even a small coke, the glass can be broken up.
So we may have to make use of some plastic, some aluminum, a kind of of solid properties which can
protect these glasses.
OK, and your data is within these glasses.
And yes, the speed is very large when compared to your Ethernet cable, the speed is very, very high
in case of optical fibers.
OK, now this is the topic which I'll take from the next class.
OK, so we have multiple topics here and then yes.
And then that's how we will proceed.
OK.
So I guess this class was informative.
OK, so let me see what you guys have here.
Best to use violence.
OK, the reason why use VR miss it will optimal your resources.
Let's see if you have only 8GB now, VR will improvise.
The fact is, if you don't use VR, then your whole system will get frozen up when you start running
or practicing.
OK.
Can we use multiple vendor router overlap?
I don't think because then that will be less to the CCP site and maybe we will be ending up with something
else.
If you want to have multi-vendor courses, I also provide different courses like FortiGate Cisco is
a firewall in which you can contact me later.
OK, so I don't want to bring something on on the CNP and getting diverted from the main objective.
What is the speed duplex and what is the concept?
Well, so might be this also this can be also answered in the next question, but I'll just give you
in my next slide, when I talk about network components, we have examples of different types of network
devices.
These network devices have something called which, which is called this switch port, and they're normally
resembled something like this.
Now this switch code is where we connect our cable like ethernet cables.
And these these are some Alexy.
This is a computer.
And from my computer, I straightaway connected to this.
Now the switchboard has something called speed and duplex, which I can do unit.
OK, I can tune it.
Most of the time are auto configured, so basically this is the hardware properties of the switch.
OK, what is what is the support of this?
Let's say this is supporting 100Mbps.
Let's say this is full duplex, full duplex this.
Then then both bi directional communication happens half duplex.
This an example, then only one data has to be passed at a time.
Once the system, then you will receive something.
OK.
So these are duplex.
OK.
Yes, so some student said he's from Morocco, so appreciate this.
Can you write in Notepad?
OK, so this is just the basic which I cover to might be in the next, I'll write properly.
OK.
Can we have example of single more than mode?
Yes, I can take this.
OK, yes, we can do this.
OK, so if you want to do this, then it's pretty simple.
We have everything set up.
So after the class, do you do reach out to me and I'll get you, I'll get you contacted with my lab
trainer and we will set this up, OK?
So then we are setting up.
You will also get all the Cisco iOS, the topology and all the software required.
OK.
So yeah, I will share the video.
OK, I will share the video, and I'll also let you guys know once the video gets uploaded.
So basically, it will take some time because there is something called rendering.
OK, so when I stop this recording, it will start rendering, which will take easy to one one hour
sometimes.
And then I have to upload on YouTube, which will take another sometime.
So you will get after something.
OK, but I guess I promise before the next class you will get see any any.
I don't support downloading.
OK, you have online access, and that is a lifetime access.
Something like Udemy concept, you know, the Udemy concept, right?
You can have the lifetime access, but they will not let you to download them due to hundreds of reasons.
One among them is piracy.
OK.
We don't want our videos to be put up on some platform where people start sharing or something like
that.
So that is one reason why downloading is not possible.
But yes, you will have lifetime access.
I don't think that should be an issue here because you, after all, have a lifetime access, then something
that you will need something like, OK.
So any other topic that you want me to include in the next class apart from this?
Apart from this, whatever we cover today, like land line of something else, which you also want to
bring up so that you understand.
The things better.
So basically in my next class, what I'm going to teach is I'm going to show you different types of
switches, Cisco switches, different types of router.
What is server?
What is firewall?
Different types of firewalls.
Different types of storage boxes.
Different data centers.
OK.
And along with this, I'll also add a few other topics which you have added up here.
OK, so.
What is this question?
So the glass class, yes, we have already started of the class.
Yes.
Yes, it's part of it's part of Canopy.
So this is a Canopy Class which is getting started, but yes, it's from the beginner point of view,
which you may may know already.
OK, but that doesn't mean that this is not a part of this association part.
Well, so as of now, it will be all basics, and I guess.
I already told you, what are the next topic so might be tomorrow and tomorrow at the end of the class?
I'll give the topic for the next following classes.
OK, so these are some basic things, which I guess you already know, but it's just revision, OK?
And then we will start with some advanced things like switching all those things and then don't don't
come back saying that.
I don't know what is this, which I don't know?
What is the Ethernet cable?
I don't know what is a duplex.
I don't know what is full speed or something like that, OK?
So to make things clear, basics are very important.
OK.
And yes, this is a part of CNP.
It's not that we are doing some other things and not CCN.
This is a part of CCN PE classes.
So I'll say how we go to the end of the day.
Yes.
OK, so guys, let's meet up in the next glass.
OK.
So I hope this class was informative and I'll pass on the recording.
OK, so thank you, everyone.
Thank you.
Thank you, everyone.
Good night from India.
Who do we send our e-mail address to you and you share the information to us?
Yes, we'll get back to me or I'll provide you my contact email.
Are you guys already connected over WhatsApp?
I guess you can ping me or one to one, or you can also bring me or groups so that I can respond back.
OK.
OK, thank you.
Thank you.
OK, thank you, everyone, have a nice day.
Thank you.
Thank you so much.
Thank you very much.
OK, thank you.
Thank you.
That.