1 00:00:00,910 --> 00:00:07,290 See history history show IP protocols shows me that no protocols are enabled. 2 00:00:07,500 --> 00:00:10,170 So no routing has been enabled on this road. 3 00:00:10,710 --> 00:00:21,620 Rodda on GOP 100 network some guinea Nabl your job on the Seemed to face ten not one but one hundred 4 00:00:21,630 --> 00:00:28,970 twenty five three and I'll do this specifically down to IP address using an inverse mosque. 5 00:00:28,980 --> 00:00:32,800 So I'm only going to enable your GOP on this interface. 6 00:00:33,110 --> 00:00:38,210 Noticed two neighbor relationships have been established rodder three has a neighbor relationship established 7 00:00:38,210 --> 00:00:44,140 to switch one over here as well to switch to shown over here. 8 00:00:45,360 --> 00:00:50,640 The reason why it forms a neighbor relationship with both switches is because rotatory is connected 9 00:00:50,670 --> 00:00:52,030 to villaine one. 10 00:00:52,140 --> 00:00:57,900 So there's a layer to connection all the way through to switch one misrouted once again doesn't exist 11 00:00:57,900 --> 00:00:59,360 in the typology. 12 00:00:59,550 --> 00:01:07,860 It simply represents a virtual HAARP router so that rodded doesn't actually exist in the topology at 13 00:01:07,860 --> 00:01:08,280 all. 14 00:01:10,160 --> 00:01:14,170 Router 3 once again has a connection to switch one as well as switch. 15 00:01:14,570 --> 00:01:24,360 So hence it forms a neighbor relationship with both so to show IP your GOP neighbor we can see two neighbor 16 00:01:24,360 --> 00:01:26,730 relationships both formed on fast. 17 00:01:26,730 --> 00:01:31,940 Ethan it 00 to show IP protocols. 18 00:01:32,400 --> 00:01:40,170 We can see as an example that it's routing for this network and it's got to Gateway's what a medic summarization. 19 00:01:40,170 --> 00:01:43,510 However on this router is enabled by default. 20 00:01:43,800 --> 00:01:51,630 So I'm going to type no order summary to disable automatic summarization the neighbor relationship reconfigures 21 00:01:52,200 --> 00:02:00,310 and we can see that automatic summarization is now disabled to show IP route. 22 00:02:00,480 --> 00:02:09,100 We can see that the Rodda has learnt about two routes through the GOP. 23 00:02:09,300 --> 00:02:16,850 It's learnt about network 10.0 wonder 10.0 via both switches and it's learnt about network tended. 24 00:02:16,870 --> 00:02:20,060 Wonder 20.00 from both switches. 25 00:02:20,320 --> 00:02:27,040 So in other words the router has two ways to get to Vilain 10 and violent 20. 26 00:02:27,040 --> 00:02:31,890 Now let's test some connectivity on Route 1 which is this device of a 27 00:02:34,700 --> 00:02:41,410 show IP wrocht which has a default gateway pointing to the aitches or Pirata. 28 00:02:41,520 --> 00:02:42,510 And in this case 29 00:02:45,520 --> 00:02:54,520 switch one should be the active router for HAARP on that Villon so on land 10 the local Rodda is the 30 00:02:54,520 --> 00:02:55,750 active router. 31 00:02:55,750 --> 00:03:00,330 So switch one is acting as the active rotifer p. 32 00:03:00,460 --> 00:03:08,740 So let's check if Rotto one acting as PC one can ping of a villain addresses attended one at 100 to 33 00:03:08,740 --> 00:03:10,070 1. 34 00:03:10,150 --> 00:03:12,110 Is it able to ping. 35 00:03:12,160 --> 00:03:19,210 Vigeland We land one on switch one and it can in this example what about 2 5 3 router 3. 36 00:03:19,270 --> 00:03:27,390 So this router can now paying this IP address on rotisserie let's add a network to the topology I'll 37 00:03:27,580 --> 00:03:34,070 create a loop back on router three of quadruple three. 38 00:03:34,360 --> 00:03:43,310 Can this PC ping that address and at the moment it can't it's getting unbreachable messages let's see 39 00:03:43,320 --> 00:03:44,230 from who. 40 00:03:44,280 --> 00:03:49,040 So de-bug IP ICMP to that ping again. 41 00:03:50,470 --> 00:03:55,870 Rodders 3 is getting an unreachable message from $10 one to $10 one. 42 00:03:55,870 --> 00:03:58,210 In other words switch one switch. 43 00:03:58,210 --> 00:04:01,050 One doesn't know about quadruple three. 44 00:04:01,180 --> 00:04:11,080 So this Rodda acting as a PC is forwarding the traffic to DHS or the virtual router that traffic is 45 00:04:11,080 --> 00:04:12,770 being forwarded by one. 46 00:04:12,790 --> 00:04:19,450 But which one doesn't know about the loopback that we configured on router 3 and that's because that 47 00:04:19,480 --> 00:04:22,300 router is not being advertised in your job. 48 00:04:22,450 --> 00:04:30,200 And we can see that by using the command to show IP protocols only network 10 is being advertised. 49 00:04:30,430 --> 00:04:36,730 It could also look at the running config so do show run pipe section III GOP. 50 00:04:37,060 --> 00:04:43,380 We have only enabled the GOP on this interface. 51 00:04:43,430 --> 00:04:59,060 We didn't enable the GOP on the loopback of router 3 so router 3 router GOP 100 network quadrupled three 52 00:04:59,910 --> 00:05:07,440 and I will matchwood exactly so show run S.. 53 00:05:07,680 --> 00:05:08,910 Yeah GOP. 54 00:05:09,140 --> 00:05:16,390 We have now advertised that network in the GOP does which one now know about that network. 55 00:05:16,460 --> 00:05:18,570 So show I.P rant on which one. 56 00:05:18,740 --> 00:05:19,990 Yes it does. 57 00:05:20,060 --> 00:05:26,820 It's learning about that network from tendered one at one hundred twenty five three which is routed 58 00:05:26,820 --> 00:05:27,510 3. 59 00:05:27,720 --> 00:05:34,270 So can Radu one acting as our PC now paying quadruple three previously. 60 00:05:34,430 --> 00:05:35,530 This didn't work. 61 00:05:35,600 --> 00:05:37,910 But notice now it does work. 62 00:05:37,940 --> 00:05:47,530 So the ping succeeds debugfs just showing that output to the ping again Rodda one is now able to ping 63 00:05:47,530 --> 00:05:49,630 Rodda three via. 64 00:05:49,650 --> 00:06:00,300 And the important piece of via its HAARP default gateway can route to acting as PTT ping that loop as 65 00:06:00,300 --> 00:06:01,560 well. 66 00:06:01,560 --> 00:06:06,630 So let's test that his route to share IP route. 67 00:06:06,900 --> 00:06:12,970 Notice no rants are shown because on this router I disabled 68 00:06:15,430 --> 00:06:16,260 IP routing. 69 00:06:16,390 --> 00:06:19,430 So show run pipe include IP raht. 70 00:06:19,780 --> 00:06:22,430 Notice the IP routing command is disabled. 71 00:06:22,450 --> 00:06:28,650 So just to show run without piping so that you can see where it is in the config. 72 00:06:28,690 --> 00:06:35,850 Notice no IP routing is disabled on the router. 73 00:06:35,940 --> 00:06:45,110 So what we did in a previous video is specify a default gateway so this command was added to the configuration. 74 00:06:45,420 --> 00:06:49,270 Show run piping to default allows me to see that. 75 00:06:49,310 --> 00:06:58,350 So this router is now acting as a PC and it can also paying the loopback the IP default gateway command 76 00:06:58,410 --> 00:07:02,410 is only used to an IP routing is disabled on a router. 77 00:07:02,580 --> 00:07:13,140 If you have IP writing enabled then you need to use the IP route command to create a default gateway 78 00:07:13,860 --> 00:07:16,370 like we did here on Route 1. 79 00:07:16,740 --> 00:07:23,130 So basically we now have full connectivity between these devices in the topology. 80 00:07:23,160 --> 00:07:26,250 The route is comparing Route 3. 81 00:07:26,250 --> 00:07:32,670 The next step is to advertise the default route in router 3 so that these two switches have Rodda 3 82 00:07:32,670 --> 00:07:39,900 as they default gateway and we need that because we want to configure Nat on router 3 to allow these 83 00:07:39,900 --> 00:07:42,540 devices to connect to devices on the Internet.