WEBVTT 00:07.880 --> 00:17.140 One of the key concepts of switching and routing is the usage of a virtual Local Area Network a villain. 00:17.170 --> 00:24.570 Imagine that you have a local area network that consists of a switch and different stations that are 00:24.570 --> 00:27.560 connected to its port. 00:27.570 --> 00:35.970 This kind of phone network is considered to be a one broadcast domain every frame that is being sent 00:36.060 --> 00:47.280 in the network is being broadcasted all over to every member that is connected to the switch in your 00:47.280 --> 00:56.850 home network one broadcast domain may not be an issue but on large networks where you have dozens and 00:56.850 --> 01:05.940 hundreds of devices that are members of different divisions that is marketing division finance division. 01:05.940 --> 01:14.030 You have to use virtual alliance you have to split your network into different broadcast domain. 01:14.100 --> 01:23.700 It makes your network much more secure and much more efficient because fewer devices receive unnecessary 01:23.790 --> 01:24.500 packets. 01:26.280 --> 01:34.860 You can configure your villains either on transparent mode 48 or on a that mode following it. 01:35.520 --> 01:46.350 Once you do it your ports are becoming a trunk port that is a port that is capable of delivering packets 01:46.740 --> 01:56.600 from different domains and not only the domain that was configured initially on the physical interface 01:58.220 --> 02:00.860 so let's move over and create some villains. 02:00.900 --> 02:07.470 And in that way we will understand the usage much more clearly. 02:07.490 --> 02:15.770 Let's head over to our network interfaces and currently we have two interfaces that one is connected 02:15.770 --> 02:16.940 to the marketing division. 02:16.940 --> 02:20.720 The second one is connected to the finance division. 02:20.720 --> 02:28.940 Now that interface is also connected to a switch in our marketing division where everyone is connected 02:28.940 --> 02:33.620 and using their desktop computers. 02:33.650 --> 02:42.670 Now we want to divide traffic that is coming from the marketing employees and the marketing managers. 02:42.830 --> 02:53.720 We can create another interface or configure another interface to be used only for the marketing managers. 02:53.840 --> 03:03.590 But we want to do it on one physical port and divide that port into two broadcast to mean the one is 03:03.590 --> 03:10.760 the broadcast domain of the physical port which is the standard zero for dot 1 and another one will 03:10.760 --> 03:17.060 be created using a feeler so let's name our interface. 03:17.060 --> 03:20.040 Name is one hundred and ten less idea. 03:20.060 --> 03:29.810 Let's use the eye tag of far veal and also one hundred and ten and let's use the marketing managers 03:29.900 --> 03:32.060 as our alias. 03:32.060 --> 03:41.880 Now we'll use the 10 0 0 0 5 1 IP address on the 24 subnet mask 03:45.980 --> 03:46.690 all right. 03:46.690 --> 03:48.010 So already use it. 03:48.000 --> 03:50.260 So let's do this six dot one. 03:50.530 --> 04:03.330 All right now we will also use a DCP server let's enable administration access using H2 P S and H DTP. 04:03.430 --> 04:04.050 All right. 04:04.050 --> 04:13.230 Once we do it we can see that on the internal one interface we have actually created another broadcast 04:13.230 --> 04:22.040 domain which belongs to the marketing manager that villain has the I D tag of one hundred and ten. 04:22.380 --> 04:27.960 And now on our switch we can configure Vila. 04:28.080 --> 04:36.330 It doesn't matter if it's a system switch or an HP switch we can configure a villain on the ports that 04:36.330 --> 04:37.590 are connected. 04:38.920 --> 04:44.130 To the marketing managers and desktop computers. 04:44.500 --> 04:55.940 Once we can figure out feel and own debt port a feeling that belongs to the 10 dot 0 that's 6 that's 04:55.960 --> 05:01.270 0 subnet which is our broadcast domain. 05:01.270 --> 05:12.910 Any traffic that will come from our marketing managers through that switch will head over only to the 05:12.910 --> 05:24.630 new villain that we have created and now we actually have to broadcast domain to secure networks that 05:24.630 --> 05:34.260 are divided but they are logically exists on one internal interface. 05:34.260 --> 05:41.880 Now our interface once we configure and you Vila has become a trunk interface. 05:42.030 --> 05:50.430 It will deliver all the traffic that comes through that internal one interface all the native traffic 05:51.170 --> 05:59.820 and that's why we say that the native traffic is the native of Vila but also the traffic that comes 05:59.820 --> 06:06.990 from the second broadcast domain that we have just configured which belongs to the villain one hundred 06:07.140 --> 06:07.860 and ten.