1 00:00:16,410 --> 00:00:21,270 Now we're told that one of the first things we need to do is configure host names 2 00:00:21,270 --> 00:00:27,550 but notice the problem in the topology when I click on a switch and go to CLI 3 00:00:27,750 --> 00:00:36,290 we're told that the device needs to be powered on. So one of the first things we need to do is add a 4 00:00:36,290 --> 00:00:42,890 power supply module to the switch. In this example 5 00:00:42,890 --> 00:00:51,110 I'll add two because this is a core switch and as you can see there the switch is now booting up and 6 00:00:51,110 --> 00:00:59,450 we see a system configuration dialog asking us whether we want to enter the initial configuration dialog 7 00:01:00,010 --> 00:01:08,120 we're going to say no for these labs and we're going to manually configure the switch so the switch 8 00:01:08,120 --> 00:01:09,980 has a base config. 9 00:01:09,980 --> 00:01:17,120 This is a base config that will be applied when you raise the configuration of a switch, so switch one 10 00:01:17,120 --> 00:01:17,870 has booted up. 11 00:01:17,990 --> 00:01:27,050 Let's do something similar to the other switches, so in the second core switch I'll add power to the 12 00:01:27,050 --> 00:01:27,990 switch 13 00:01:28,430 --> 00:01:29,900 and as you can see it's booting up 14 00:01:32,730 --> 00:01:36,510 do something similar with the access switches. 15 00:01:36,540 --> 00:01:45,220 In this example, because the access switches I'll only add a single power supply, switch is booting up 16 00:01:45,220 --> 00:01:47,590 here's the second access switch 17 00:01:50,370 --> 00:02:01,750 switch is booting up as well and here's the last switch, single power supply switch is booting up. In the 18 00:02:01,750 --> 00:02:02,230 router 19 00:02:05,010 --> 00:02:10,220 if we try and go to CLI we're told that the device must be powered on. 20 00:02:10,259 --> 00:02:18,370 So what we need to do is turn the router on now, unlike the switches we don't have to insert power supplies. 21 00:02:18,610 --> 00:02:27,830 We simply need to turn the router on most Cisco routers have an on-off switch, lower end Cisco switches 22 00:02:27,830 --> 00:02:36,670 don't, you simply plug in the power to turn them on. Now that the switches are booted we can configure 23 00:02:36,670 --> 00:02:40,760 host names. 24 00:02:40,870 --> 00:02:43,490 So this is core 1 25 00:02:43,810 --> 00:02:45,550 give it a name of core 1, 26 00:02:49,240 --> 00:02:54,550 core 2 hostname core 2. 27 00:02:54,730 --> 00:03:00,340 You can see the prompt is changed to show that it's core 2. 28 00:03:00,560 --> 00:03:05,000 It's a very good idea to configure hostnames and other basics on your switches. 29 00:03:05,020 --> 00:03:11,860 Now what a lot of network engineers will do is they will have this in notepad so that they can simply 30 00:03:11,860 --> 00:03:18,010 copy and paste a bunch of configuration into multiple devices. 31 00:03:18,010 --> 00:03:27,820 What we'll do here is do it manually so that you can learn all the commands. So that's access one configured 32 00:03:28,580 --> 00:03:37,320 there's access 2 configured here's access 3 so hostname access 3. 33 00:03:40,800 --> 00:03:42,860 So host names for the switches are configured. 34 00:03:43,030 --> 00:03:49,920 What about the router? 35 00:03:50,120 --> 00:03:56,210 I'm going to call this Internet router you could call it really anything you want to, in the exam 36 00:03:56,210 --> 00:04:03,980 just follow the instructions if they tell you to configure it with a specific name then do that. 37 00:04:03,980 --> 00:04:07,960 The next thing we need to do is shut down unused interfaces. 38 00:04:08,170 --> 00:04:18,600 So in this topology switch 1 has interfaces gigabit 101 2 3 20 23 and 24 in use. 39 00:04:18,890 --> 00:04:27,680 Show IP interface brief will show us the status of interfaces so, scrolling up we can see that various 40 00:04:27,680 --> 00:04:36,100 interfaces are up up 1 2 and 3 which is correct per our topology, 20 is up 41 00:04:39,320 --> 00:04:48,200 23 and 24 are also up we can already see a problem however this code switch has a bunch of interfaces 42 00:04:48,200 --> 00:04:52,390 marked in orange that means that spanning tree is blocking those ports. 43 00:04:53,060 --> 00:04:55,240 So we'll need to fix that later 44 00:04:57,190 --> 00:05:06,040 but as you can see here interface 2 3 and 24 are blocking on that core switch. 45 00:05:06,230 --> 00:05:15,240 We gonna wanna optimize that and fix it but for now, let's manually shut down unused interfaces. 46 00:05:15,280 --> 00:05:18,390 It's important to do that from a security point of view. 47 00:05:18,650 --> 00:05:20,890 So interface gigabit 48 00:05:21,130 --> 00:05:30,710 1 0 4 2 19 needs to be shut down. 49 00:05:30,770 --> 00:05:39,590 So what we're gonna do here is actually use the range command, so interface range 4 to 19 and shut 50 00:05:39,680 --> 00:05:40,940 those interface is down. 51 00:05:45,000 --> 00:05:49,260 So we've essentially shut down this interface, this interface, 52 00:05:49,270 --> 00:06:00,510 this interface and others in the range 4 to 19 so scrolling up notice port 19 has been shut down 20 53 00:06:00,540 --> 00:06:02,470 hasn't been shut down. 54 00:06:02,520 --> 00:06:11,340 It needs to stay up, 21 and 22 need to be shut down, however, so show IP interface brief 55 00:06:14,430 --> 00:06:17,520 these two need to be administratively shut down. 56 00:06:17,740 --> 00:06:22,980 Its interface range gigabit 1 0 21 to 22 57 00:06:23,040 --> 00:06:25,690 shut that down, 58 00:06:26,340 --> 00:06:29,760 show IP interface brief. 59 00:06:29,760 --> 00:06:42,150 We need to do something similar on these interfaces, so interface gig 101/124 and I should use a 60 00:06:42,150 --> 00:06:45,580 range there 61 00:06:46,430 --> 00:06:55,440 shut those ports down. So show IP interface brief now shows us that all unused ports are administratively 62 00:06:55,440 --> 00:06:59,450 shut down I'll save the configuration at this point. 63 00:06:59,580 --> 00:07:04,560 Get in the habit of saving your config on a regular basis. 64 00:07:04,830 --> 00:07:07,280 So on this switch we need to do something similar. 65 00:07:07,290 --> 00:07:14,760 Show IP interface brief there are multiple interfaces on the switch that need to be shut down. 66 00:07:16,680 --> 00:07:21,770 This command shows us that these three interfaces are up. 67 00:07:21,810 --> 00:07:27,810 That's correct 23 and 24 need to stay up as well as 22. 68 00:07:28,230 --> 00:07:32,580 This interface is showing down because we'd need to know shut the interface on the router.