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In the previous video, we already&nbsp;
learn about how switch and router work.&nbsp;&nbsp;

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The summary is that switch is used to&nbsp;
connecting many computer that in the same&nbsp;&nbsp;

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block subnet. And router is used to connecting&nbsp;
many computer that in the different block subnet.

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And then, now in this video, we are going to&nbsp;
practice about switch in cisco packet tracer.&nbsp;&nbsp;

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Let’s just start!

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Let’s import a switch to our project. Go to&nbsp;
network devices, here we can see a router,&nbsp;&nbsp;

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switch, hub, wireless, and others. Click on&nbsp;
the switch. Here we can use cisco switch 2960.

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Next let’s add some pc. Go to end device, and add&nbsp;
some more pc. Let’s say here we want to have 5 pc.&nbsp;&nbsp;

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And here we can remove cable between pc0 and pc1.

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Now let’s connecting all of the pc to the switch.&nbsp;&nbsp;

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Okay now all of pc already&nbsp;
connected to the switch.

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Next let’s configure the ip address of all&nbsp;
pc with the same block subnet. Let’s say&nbsp;&nbsp;

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we will use the first block&nbsp;
subnet. Let’s start with pc0,&nbsp;&nbsp;

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the ip address is 10.10.10.1, and the&nbsp;
subnetmask is 255.255.255.224. next for pc1,&nbsp;&nbsp;

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the Ip address is 10.10.10.2&nbsp;
and the subnetmask is correct.

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Okay next for pc2, the ip address is 10.10.10.3&nbsp;
and the subnetmask is 255.255.255.224.

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Next for pc3, the ip address is 10.10.10.4 and the&nbsp;
subnetmask is 255.255.255.224. and last, for pc4,&nbsp;&nbsp;

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the ip address is 10.10.10.5&nbsp;&nbsp;

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and the subnetmask is 255.255.255.224. Okay we&nbsp;
have done configuring ip address for all pc.

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Now let’s test the connection between&nbsp;
all pc. Here we can test using packet.&nbsp;&nbsp;

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Let’s test from pc0 to pc1.&nbsp;&nbsp;

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Okay here we can see that the result is&nbsp;
successful, here we can see many result,&nbsp;&nbsp;

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we can just delete it. Now let’s test again&nbsp;
from pc0 to pc1, okay success, from pc1 to pc2,&nbsp;&nbsp;

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also success, from pc3 to pc4, also&nbsp;
success, and from pc4 to pc5 also success.

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Okay so now all pc can communicate&nbsp;&nbsp;

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each others. This is because all&nbsp;
of pc is in the same block subnet.

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For the testing, now let’s&nbsp;
change the ip address of pc4.&nbsp;&nbsp;

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Let’s say we want to change to 10.10.10.40,&nbsp;
and if we see our calculation before,&nbsp;&nbsp;

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10.10.10.40 Is in the second block subnet. so pc4&nbsp;
should not be able to communicate with others pc.

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Let’s send packet from pc4 to pc3, here&nbsp;
we can see that the result is failed.&nbsp;&nbsp;

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Now let’s test again from pc4 to&nbsp;
pc2, also failed. From pc4 to pc0,&nbsp;&nbsp;

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and this is also failed. Okay, so remember&nbsp;
that switch is used to connecting many pc&nbsp;&nbsp;

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that is in the same block subnet. If there&nbsp;
is a pc that in the different block subnet,&nbsp;&nbsp;

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so that pc can not communicate with other pc.

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Okay now let’s change the ip address of pc4 again,&nbsp;&nbsp;

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let’s change this to 5 again. Let’s try ping from&nbsp;
pc3 to pc4, and okay now the result is success.

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Okay I think enough for this video. In the next&nbsp;
video, we are going to practice with router.&nbsp;&nbsp;

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Thankyou for watching and&nbsp;
see you on the next video
