Hello Friends will come back.
Welcome to the final lesson of this lecture.
In this lesson we're going to talk about how to troubleshoot the network problems in our previous lessons
we learn some of the commands to troubleshoot the network problems like if down if or we learn how to
configure and even if conflict come on.
OK so here in this lesson I'm going to show you some important commands for troubleshooting the next
problem.
OK.
OK we saw in some of the previous lessons the use of ping.
OK.
In this lesson I want to show you some of the details of the ping.
Come on.
OK.
So let's get practical.
How could this be.
Is a command which is in use to test the connectivity in between two computers.
OK.
So there is a format like this.
You can either determine like this or an IP address like this.
OK.
But you can't being bought at once so just hit enter here.
We saw this kind of output in the previous lesson.
So when we ping Google dot com It gives the output like this the number of bytes of data is transmitted
to the destination or that Google dot com to get the reply or can we get this reply.
So that kind of reply means that we have successfully connected to Google dot com.
OK so at the statistics here you can see 15 packet transmitted received and zero percent packet loss.
OK the time required for this operation.
You get the statistics like this.
OK.
So when you in the IP domain it continues looping until you press control-C.
OK but there is a switch I fancy with it you can control this output.
OK.
So I want to see not only file types.
So here I can see it like this thing I fancy for you and Google got.
Let's see OK.
Now here you can see it's going to print all the file you bring output.
OK.
Like this.
OK you can sit dippie got put like this.
OK.
No no.
There is an option.
We can see it and that option is called This time interval.
OK.
So with small hyphen I you can see it in time interval.
So I want to say see the output of this pin.
After five milliseconds it means that I want to set the time interval between groupings.
OK.
So here you can set like this and hit enter OK.
So now let's see this is our first being then second.
And third
full.
OK.
Is going to print it out.
With that difference of few milliseconds.
OK.
In this way you can set there time in trouble with hyphen I.
OK.
There is another option called as a flopping.
So your concern sort of brings to the destination IP address of a hyphen.
So by pressing this what you need to certain time control also.
So let's see what happens here.
It is not showing any output here very fast because now it is in sending flowers ping to the Google
dot.
OK.
So now press control see OK now or you can see here we cannot get any ping or put But here had the bottom
Stanisic you can see Sixpack it transmitted.
It's expected to.
Oh good.
That means it's been pings to the destination we Typhon.
OK.
If you have multiple network cards or multiple interfaces on your system then you can specify it hyphen
I.
And then the interface name so like this zero.
And you can bring to the IP address or how this IP address configured invalid argument OK the hiring
and B zero us 3.
It takes a long time because we will see how one interface and we specify the hyphen.
So I'm going to click here.
OK.
When you send the pink to mine by default it sends 64 by of packets.
OK.
So you can set up both sides of packets to be transmitted to the destination IP.
So hyphen S..
So here I want to set it to suppose hundred of bytes.
OK.
You'd send the packets in bytes.
OK so just be the whole world with 100 bytes
hogi.
When you say 600 100 bytes OK add the left column here and see 32 bytes from this network.
OK.
You can set the size for the pin.
OK.
Now after performing all the ping operations for your configure IP if you get your PIN you successful
and you still you you are not able to access the connection or the PC.
Then there is a problem with the McAleer.
OK.
So how to deal with McAleer days.
C'mon ERP.
So with ERP you'll get this configuration like this.
OK so it brings the gateway address.
OK the hardware address then the address of the destination machines.
So under 0 9 is a virtual host Tony adapter that we configured on the Windows machine.
So with this you can see the configure the options and you can determine the machine or the IP that
you are trying to pin is present in this list or not.
If it is not present here that means you need to configure it inside this ERP.
OK.
So there is a switch with the help of which you can add an IP address into this list.
OK so what I want to know the robot are you got 16 not 16 to do here.
And I want to set the MAC address to suppose 0 0 0 6 0 0 the capital zero you see B C and 9 C.
OK.
And he had an operation not permitted.
Let's look at pseudo
when he can now view the hive and free OK.
Now here at the beginning you can see 10.0 or 2.20 booth.
It's been added to this list.
OK.
And if you want to delete the entry What do you need to do is you need to provide the switch in the
IP address remove this MAC address from here.
OK now let's do here.
When we look at the IP is still present there.
OK let's try to think it's not authentic to its destination host unreachable.
That means our IP is removed successfully but you need to restart this interface to see the changes
into this error list.
OK.
In this way you can determine or troubleshoot the problem on McAleer if the problem is present on McAleer
with the help of this come on you can solve that.
OK.
After performing all these operation if you still have a problem with your neck then you can test for
the gateways or the routers.
OK.
So there is a common corridor as Chris Rock.
So first of all you need to install sudo install.
Here is the key trace route.
OK.
I have already installed it on this machine.
So what Chris Rock does is it use the address it gives the address of the gateways in between the source
and the destination machine.
So an internet is a group of four giant networks so you reach from source to destination and the packet
needs to growl along different gateways.
So if there is a problem present in any kind of data way so you can determine it with the traceroute.
Come on.
So you use traceroute to type this route.
And then the IP like this Google dot com you can type an IP address like this.
You got 16 on it.
OK now I want to google.
Let's get into
OK now.
Here in the output you can see at the beginning it shows the gateway of this local machine.
And at the end it shows they'll get rid of this local machine and in between these two it slows and
the output video starts.
The stars represent that either the Gateway has blocked with the rope come on or there is a problem
with this gateways.
OK.
The gateways which come across this source and destination machines to so by observing this you can
easily do to mine where the problem exists.
OK.
So suppose I'm going to here for this.
No there are got 16 okayed it shows a very small output here.
OK.
Because it is just a single machine and it is a wonderful machine.
So that's why we get such kind of output.
OK the Chris would come on by default prints the destination of the UDP protocol.
But you can set it to ICMP protocol by writing the switch like Ifan I and I should be capital.
So I'm trying to google with capital by it saying operation not put McKidd pseudo
OK now of providing capital.
I didn't here are different IPs that we can get with the previous output.
OK.
A cross between the source and the destination.
This way you can get this kind of information which will be very helpful for you to solve the problem
if it is about the gateways.
You can not Cresap when his domain or IP by providing a different port.
So you press route with a particular port.
You need to type in the B and the port number.
I want to Chris Rupi for number 30 and the domain is Google all this way with Ubuntu called
ok.
It's take a long way to reach want to dot com from this local machine.
OK you can see there are 30 gateways in between that need to pass.
But we have here and different poor.
OK.
So that that's why we get this kind of output.
So in this way you can troubleshoot any machine with the help of these commands.
OK.
This is not about networking like CCMA or that.
But if you know the basics of computer networking are you how if you already completed the basics of
CCN then you'll understand how this works OK very easily.
So if you don't have any knowledge of CC and the like thing you can search on YouTube and get very cool
YouTube tutorials for it to understand the basics of it.
And then after that you'll understand the depth of these glorious Aki.