1 00:00:00,710 --> 00:00:06,290 Now in a previous video we configured HSP between switch one and switch two. 2 00:00:06,320 --> 00:00:13,550 Previous to that video, we configured trunk links, access ports and spanning tree, and we enhance 3 00:00:13,550 --> 00:00:21,080 the convergence timers of these devices to improve the way that the network handles failures and the 4 00:00:21,080 --> 00:00:22,700 utilization of uplinks. 5 00:00:22,970 --> 00:00:30,560 In this video, we're going to enable AGP on switch one and switch two as well as on router three. 6 00:00:31,010 --> 00:00:33,980 Now this HSR pirata doesn't actually exist. 7 00:00:33,980 --> 00:00:40,310 It's only shown in the topology to show you that HSP is configured between switch one and switch two, 8 00:00:40,490 --> 00:00:42,530 so don't let it confuse you. 9 00:00:42,560 --> 00:00:44,660 The router is actually turned off. 10 00:00:44,780 --> 00:00:47,150 It's only here as an icon. 11 00:00:47,150 --> 00:00:51,290 It's not actually connected to any devices in the topology at all. 12 00:00:51,530 --> 00:00:59,120 So we're going to enable IGP on switch one, switch two and router three and then advertise a default 13 00:00:59,120 --> 00:01:02,780 route from router three to these two switches. 14 00:01:03,140 --> 00:01:09,890 In a subsequent video, I'll enable network address translation on router three so that these devices, 15 00:01:09,890 --> 00:01:16,100 especially the router one and router two devices acting as PCs can access the Internet. 16 00:01:16,550 --> 00:01:25,100 So let's get started on switch one tap enable confetti router and here I can select various routing 17 00:01:25,100 --> 00:01:25,640 protocols. 18 00:01:25,640 --> 00:01:27,260 I'm going to select IGP. 19 00:01:27,350 --> 00:01:30,020 I need to specify an autonomous system number. 20 00:01:30,110 --> 00:01:34,790 If the autonomous system number is not the same, the riders won't automatically exchange routes with 21 00:01:34,790 --> 00:01:35,450 each other. 22 00:01:35,660 --> 00:01:40,010 So before I go any further, do show IP protocols. 23 00:01:40,610 --> 00:01:47,030 I can see that IGP is being configured, but we're not advertising any networks at the moment. 24 00:01:47,030 --> 00:01:53,930 I need to advertise networks using the network command, so as an example, I could simply enter network 25 00:01:53,930 --> 00:01:56,030 ten .0.0.0. 26 00:01:56,840 --> 00:02:01,610 And that will enable IAP on all interfaces in the ten network. 27 00:02:01,610 --> 00:02:03,380 So do show IP protocols. 28 00:02:03,380 --> 00:02:09,050 Now shows me that your job is routing for networks ten. 29 00:02:09,289 --> 00:02:16,280 The runner ID is this and ERP is enabled on these interfaces. 30 00:02:16,280 --> 00:02:25,220 So do show IP job interfaces shows me that airdrop is enabled on VLAN one, VLAN ten and VLAN 20. 31 00:02:25,580 --> 00:02:33,770 If I removed the network command and did that command again, so do show IP IP interfaces. 32 00:02:33,890 --> 00:02:40,610 I would see that ERP is not enabled on any interfaces, which means no networks will be advertised. 33 00:02:42,050 --> 00:02:48,320 And Ian GOP will not form neighbour relationships with any devices on any interfaces. 34 00:02:48,620 --> 00:02:55,100 So Network ten again, your job is now enabled on VLAN one, ten and 20. 35 00:02:56,020 --> 00:02:58,510 And to make it easy, I'll just go back to privilege mode. 36 00:02:58,900 --> 00:03:01,450 So show IP IP. 37 00:03:01,930 --> 00:03:05,020 We've already seen the interfaces and there they are. 38 00:03:05,770 --> 00:03:09,460 Other options available include neighbors. 39 00:03:09,940 --> 00:03:16,450 At the moment there are no IGP neighbors because I haven't enabled Ethiopian any other devices. 40 00:03:17,390 --> 00:03:21,080 I can look at the topologies that show IP, IGP topology. 41 00:03:21,350 --> 00:03:30,740 The routes that are going to be advertised in IGP include 10.1, 10.0, slash 24, 10.1 10 to 2024 as 42 00:03:30,740 --> 00:03:33,560 well as 10.1 100.0 slash. 43 00:03:33,560 --> 00:03:35,180 24 show. 44 00:03:35,180 --> 00:03:35,660 Run. 45 00:03:35,660 --> 00:03:36,470 Pipe. 46 00:03:37,430 --> 00:03:39,740 Section drop. 47 00:03:40,750 --> 00:03:43,720 This is the GOP configuration that we've done. 48 00:03:44,110 --> 00:03:51,520 Now, as a rule of thumb, you're going to want to use the note auto summary command to disable automatic 49 00:03:51,520 --> 00:03:52,660 summarization. 50 00:03:53,500 --> 00:03:59,920 In the video I showed you a problem with automatic summarization and the same will happen with the IRP. 51 00:04:00,010 --> 00:04:04,930 It's good practice to disable automatic summarization in ERP. 52 00:04:05,350 --> 00:04:09,550 So SHO run pipe section ERP. 53 00:04:10,700 --> 00:04:16,060 All we've done is use the network command and disable automatic summarization. 54 00:04:16,070 --> 00:04:22,370 Now on this device, automatic summarization in ERPs, disabled by default. 55 00:04:23,150 --> 00:04:25,880 So notice automatic summarization disabled. 56 00:04:26,000 --> 00:04:29,780 Now let's prove that by doing a similar configuration on switch two. 57 00:04:30,380 --> 00:04:36,740 So rather ERP 100 Network 10.02020. 58 00:04:37,070 --> 00:04:41,860 Do show IP protocol just before I press enter notice. 59 00:04:41,870 --> 00:04:49,160 Neighbor relationships have been formed between switch two and switch one on VLAN one. 60 00:04:49,700 --> 00:04:51,860 VLAN ten and VLAN 20. 61 00:04:52,130 --> 00:04:57,920 But do show IP protocols shows me that automatic summarization is disabled. 62 00:04:58,130 --> 00:05:01,910 This will be dependent on the version of iOS that you're using. 63 00:05:02,480 --> 00:05:11,100 Switch two is routing for Network ten and is getting information from switch one on VLAN ten. 64 00:05:11,120 --> 00:05:13,910 VLAN 20 and VLAN one. 65 00:05:14,300 --> 00:05:15,980 Back on switch one. 66 00:05:16,610 --> 00:05:19,670 Previously we were routing for Network ten. 67 00:05:20,570 --> 00:05:23,270 But we didn't have any routing information sources. 68 00:05:24,090 --> 00:05:32,460 Now, however, we've got neighbor relationships on VLAN one, VLAN ten and VLAN 20. 69 00:05:33,160 --> 00:05:35,890 So show IP protocols. 70 00:05:36,130 --> 00:05:40,120 Shows me that we've got these sources of routing information. 71 00:05:40,600 --> 00:05:41,500 Show IP. 72 00:05:42,010 --> 00:05:43,180 IP neighbors. 73 00:05:45,480 --> 00:05:47,760 So show IPR GOP neighbors. 74 00:05:49,070 --> 00:05:52,250 Shows us that we have three neighbouring relationships. 75 00:05:52,250 --> 00:05:57,140 So a neighbour relationship is established on every VLAN show IP route. 76 00:05:57,260 --> 00:06:03,200 At the moment we don't see any IGP routes in the routing table, so there are no DY entries because 77 00:06:03,200 --> 00:06:09,680 both these routers are connected physically to all networks in this topology. 78 00:06:10,340 --> 00:06:16,280 But let's enable IGP on router three and then we'll advertise a route into the topology.