1 00:00:01,170 --> 00:00:02,220 So let's do a test. 2 00:00:02,220 --> 00:00:06,740 What happens if we move one of these ports into a different villain. 3 00:00:06,740 --> 00:00:10,430 Now earlier when I was doing this test I had some problems and genus 3. 4 00:00:10,950 --> 00:00:17,340 So what I'm gonna do is I'm a shut gigabit 0 2 down and give it at zero or three. 5 00:00:17,400 --> 00:00:27,900 So the only interfaces that are now up 0 0 and 0 1 in this topology just to start with a simple network 6 00:00:29,110 --> 00:00:30,430 to make a point. 7 00:00:30,520 --> 00:00:35,690 So those interfaces are up up the faces on down. 8 00:00:35,890 --> 00:00:44,180 What I do actually is just shut down any other interfaces to make sure that things converge quicker. 9 00:00:45,190 --> 00:01:01,520 So shut down that Drange and this range of interfaces show IP interface brief or so shut down gigabit 10 00:01:02,200 --> 00:01:03,800 3 0 2 3. 11 00:01:03,800 --> 00:01:12,240 So show IP interface brief interfaces are shut down except for those two interfaces. 12 00:01:12,290 --> 00:01:20,780 So gigabit 0 0 gigabyte 0 1 is Route 1 able to ping rodded to. 13 00:01:20,870 --> 00:01:22,190 Yes it is. 14 00:01:22,190 --> 00:01:33,610 But if we put to this interface gigabit 0 1 in TV land to what will happen with the pings. 15 00:01:33,620 --> 00:01:40,760 So switch port access violent to now before Precentor notice the pings succeeds. 16 00:01:40,760 --> 00:01:43,360 I'll repeat this a hundred times 17 00:01:48,620 --> 00:01:52,230 and then hit enter on the switchboard access. 18 00:01:52,240 --> 00:01:53,290 Vigeland c'mon. 19 00:01:53,600 --> 00:01:56,310 Notice the pings are starting to timeout. 20 00:01:57,100 --> 00:02:03,910 So as soon as I moved the port from one villain to another the devices are not able to communicate with 21 00:02:03,910 --> 00:02:05,170 each other. 22 00:02:06,190 --> 00:02:14,530 So spending tree shows that gigabit 0 1 is still in the learning phase of spanning tree so we'll wait 23 00:02:14,530 --> 00:02:18,320 for a while for spending three to converge and then do the test again. 24 00:02:18,610 --> 00:02:24,940 But what I'd like you to see is these two devices were in the same subnet and in the same villain and 25 00:02:24,940 --> 00:02:31,430 they were able to ping each other as soon as we moved one port to a different villain. 26 00:02:31,510 --> 00:02:39,490 They were no longer able to ping each other spending trees forwarding on violent to on port gigabit 27 00:02:39,490 --> 00:02:40,890 to 0 1. 28 00:02:40,990 --> 00:02:50,580 It's also forwarding on gigabit 0 00 on Villon one. 29 00:02:50,610 --> 00:02:58,770 So if we use the show spending summary command we can see that Villon one is forwarding the line to 30 00:02:58,990 --> 00:02:59,710 forwarding. 31 00:02:59,730 --> 00:03:01,200 There are no blocking ports 32 00:03:03,720 --> 00:03:14,800 yet Rato one is not able to ping router to and route it to is not able to ping Rotto one because they 33 00:03:14,800 --> 00:03:19,780 are in separate villans easy route to a way that it's in a separate villaine 34 00:03:22,860 --> 00:03:29,700 the answer is no because no tagging information or no veel and information is going to be sent on this 35 00:03:29,700 --> 00:03:30,430 port. 36 00:03:30,750 --> 00:03:32,450 It's an access port. 37 00:03:32,550 --> 00:03:37,340 So we just have stented Ethan It frames. 38 00:03:37,450 --> 00:03:47,580 There is no violent port information transmitted on any of the frames going out of that port. 39 00:03:47,620 --> 00:03:56,390 Now to prove this let's add some IP addresses on to switch one interface VLAN one IP address 10 1 1 40 00:03:56,680 --> 00:04:09,470 and let's make it 2 5 4 and then interface villaine to IP Address 10 1 2 2 5 4 with a mosque. 41 00:04:09,880 --> 00:04:12,050 Now I need to know shut both of those. 42 00:04:12,070 --> 00:04:17,300 So go back to the land one and no shut it. 43 00:04:17,480 --> 00:04:21,560 So these are layers 3 switched of virtual interfaces on the switch. 44 00:04:21,560 --> 00:04:28,460 We are basically creating a layer 3 IP address on the switch for the relevant VLAN So as an example 45 00:04:28,640 --> 00:04:36,080 the switch can ping Rato one on Villon one it lost the first ping because of all that. 46 00:04:36,330 --> 00:04:43,570 So which one can ping Rotto one it can ping rather too because Ratatouille needs to be configured with 47 00:04:43,570 --> 00:04:47,700 the right IP address for violent to that before I do that. 48 00:04:47,710 --> 00:04:50,800 Notice when I do a capture on that port 49 00:04:54,370 --> 00:05:04,490 traffic from the switch to the router is untagged it's a standard Ethernet frame IP traffic. 50 00:05:04,660 --> 00:05:07,110 There is no tagging at all. 51 00:05:07,930 --> 00:05:14,830 And as a last test what I'll do is configure router to say interface if seriously. 52 00:05:14,840 --> 00:05:20,170 Zero IP address tendered one to two. 53 00:05:20,260 --> 00:05:27,160 So I've moved it from one subnet to another paying two to. 54 00:05:27,220 --> 00:05:37,650 The switch can ping Rodda two on the port is the traffic tagged. 55 00:05:37,810 --> 00:05:42,290 So do the ping again full for ICMP traffic. 56 00:05:42,310 --> 00:05:45,380 Notice there is no tagging information at all. 57 00:05:45,460 --> 00:05:47,800 It's just stented Ethan it. 58 00:05:47,830 --> 00:05:50,820 So what is the summary of the test. 59 00:05:51,070 --> 00:05:57,340 The PCs in the typology are unaware of violent traffic. 60 00:05:57,430 --> 00:06:00,580 These are access ports or untagged ports. 61 00:06:02,230 --> 00:06:06,580 In other words to that one Q tagging is not used on these ports. 62 00:06:06,660 --> 00:06:12,400 Ken Rato one pink router too so it can pin 10 one to two at the moment. 63 00:06:12,400 --> 00:06:19,580 It won't be able to because the roads don't have default routes configured. 64 00:06:20,200 --> 00:06:29,500 So I'm going to turn off IP routing on these routers to turn them into PCs or dumb devices and type 65 00:06:29,500 --> 00:06:31,210 IP default gateway. 66 00:06:31,390 --> 00:06:40,750 And in this case the default gateway router to will be the IP address on Grado one new IP routing that's 67 00:06:40,760 --> 00:06:48,920 a c'mon that turns an expensive router into a dumb device IP default gateway tendered one to 1 or 2 68 00:06:48,940 --> 00:07:01,350 for 4 full Serrato one has a default gateway config it can ping its default gateway Yes it can Kennet 69 00:07:01,440 --> 00:07:06,410 paying Rodda to at the moment it can. 70 00:07:06,660 --> 00:07:10,850 And the reason why is that on these switches 71 00:07:13,670 --> 00:07:18,330 IP routing is configured by default. 72 00:07:18,330 --> 00:07:26,670 However if I typed no IP routing which is true on a lot of switches the pings will not succeed because 73 00:07:26,670 --> 00:07:33,480 the switch is not doing interval and routing to enable him to Villon riding on a three switch such as 74 00:07:33,480 --> 00:07:36,520 this or a physical switch. 75 00:07:36,570 --> 00:07:46,530 You need the IP routing command to route between the villains so to prove this on Route 2 I'll do a 76 00:07:46,740 --> 00:07:56,230 debug IP ICMP so we can see if I see that traffic is getting to the router do the ping again. 77 00:07:56,540 --> 00:07:59,190 And notice they are all the echo replies. 78 00:07:59,670 --> 00:08:03,210 We can do something similar on route a one 79 00:08:06,330 --> 00:08:13,840 and there are the echo replies debug IP packet will give us a low level information. 80 00:08:13,840 --> 00:08:22,210 I'll repeat this only once so I will send one ping which succeeded over the and what you can see is 81 00:08:22,210 --> 00:08:30,120 the packet was routed out of the router and sent to the destination as an IP packet. 82 00:08:30,130 --> 00:08:37,990 So in other words these end devices connected to a switch are no way that the switch is using villans 83 00:08:39,460 --> 00:08:41,800 the configuration of the switches as follows. 84 00:08:41,830 --> 00:08:44,840 Show run interface give it to 0 0. 85 00:08:44,950 --> 00:08:47,280 That port is using default configure which is. 86 00:08:47,380 --> 00:08:53,030 Which means that it's an access Port Vila and one gigabit zero or two is an access port in the land 87 00:08:53,030 --> 00:09:02,350 to IP routings enabled and we've configured the least 3 IP addresses on the TV villains to allow the 88 00:09:02,350 --> 00:09:08,920 switch to rot between the TV lens configured which in turn allows router 1 and to to communicate with 89 00:09:08,920 --> 00:09:10,260 each other. 90 00:09:10,270 --> 00:09:18,490 Now if router 1 and router 3 are put into the same land and router a 4 put into the same Villiam that 91 00:09:18,490 --> 00:09:25,120 kind of information needs to be communicated from one switch to another using Ada to the one key. 92 00:09:25,120 --> 00:09:27,860 So this port needs to be configured as a trunk port. 93 00:09:28,000 --> 00:09:30,250 So let's prove that and then configure it.