1 00:00:05,650 --> 00:00:08,380 It's your job to fix the network. 2 00:00:14,990 --> 00:00:23,030 So at the moment, based on this configuration, it looks like this router has been fixed, show version 3 00:00:23,420 --> 00:00:31,430 again shows us that the configuration register is set to this, which is the way we want it set. 4 00:00:32,060 --> 00:00:38,820 So to confirm things we could do, reload here and verify that the router boots successfully. 5 00:00:40,010 --> 00:00:47,510 OK, so on router 1, we've been prompted whether we want to enter the initial configuration dialog, 6 00:00:48,020 --> 00:00:49,070 I'm going to say No, 7 00:00:50,150 --> 00:00:51,710 press return to get started. 8 00:00:53,030 --> 00:01:01,610 We've been able to get into the router, but there's no configuration, just a standard default configuration 9 00:01:01,910 --> 00:01:03,230 exists on the router. 10 00:01:04,680 --> 00:01:12,050 As an example, there are no IP addresses, there are no routing protocols running on the router, router 11 00:01:12,150 --> 00:01:15,030 2 once again has booted successfully. 12 00:01:15,570 --> 00:01:16,860 So that's good news. 13 00:01:18,500 --> 00:01:25,140 OK, so on router 1, why did it boot and not load the startup configuration? 14 00:01:26,030 --> 00:01:27,440 Why did we get prompted 15 00:01:28,330 --> 00:01:36,550 with the system configuration dialog or initial configuration dialog, show version, I'll make this 16 00:01:36,550 --> 00:01:42,740 bigger and scroll down, can you see the problem here? 17 00:01:43,390 --> 00:01:48,910 Notice the configuration register is set to 0x2142, 18 00:01:50,040 --> 00:01:58,470 that again configures the router to ignore NVRAM, in other words, ignore the startup configuration. 19 00:02:00,770 --> 00:02:12,950 So we're going to want to change that, so config register 0x2102 show version, currently 20 00:02:13,460 --> 00:02:15,380 this is the configuration register, 21 00:02:15,920 --> 00:02:22,130 this will be the configuration register at next reload, type reload. 22 00:02:22,700 --> 00:02:28,670 We definitely don't want to save the running configuration now because otherwise 23 00:02:28,670 --> 00:02:30,200 and I'll just exit out of this, 24 00:02:31,510 --> 00:02:37,270 otherwise, we are going to be overriding this startup configuration 25 00:02:39,100 --> 00:02:46,840 with this default running configuration, which we definitely don't want to do. So show startup-config 26 00:02:47,200 --> 00:02:54,370 shows us a full startup configuration, including a configuration for EIGRP. 27 00:02:54,940 --> 00:02:58,560 The running configuration doesn't have any of that. 28 00:02:59,260 --> 00:03:01,810 We have changed the configuration 29 00:03:01,810 --> 00:03:05,410 register to this at next reload. 30 00:03:05,950 --> 00:03:14,770 So when we reload, we want to make sure that we enter no here and then press enter to confirm reboot. 31 00:03:17,600 --> 00:03:26,840 So the router should boot normally and load the startup configuration into running configuration when 32 00:03:26,840 --> 00:03:27,560 it boots up. 33 00:03:29,520 --> 00:03:35,820 We can see that it's done that noticed press return to get started and EIGRP neighbor relationship has 34 00:03:35,820 --> 00:03:41,690 been established to router 2, notice the router name is router 1. 35 00:03:42,330 --> 00:03:51,900 We have a password, which in this case is Cisco, show run shows us the configuration of the router. 36 00:03:52,380 --> 00:03:55,050 So a configuration has been set. 37 00:03:56,450 --> 00:03:59,000 So show IP interface brief. 38 00:03:59,990 --> 00:04:01,790 We have an interface up, 39 00:04:04,310 --> 00:04:11,620 interfaces down currently to router 3 loopback is up, loopback of router 2 is this. 40 00:04:14,360 --> 00:04:22,950 I can ping the loopback of router 2 and router 2 can ping the loopback of router 1. 41 00:04:23,600 --> 00:04:26,540 So we've got these two routers restored. 42 00:04:28,540 --> 00:04:39,340 Show version, configuration register is now this, startup configuration is still there, so that's good. 43 00:04:41,690 --> 00:04:43,160 Let's have a look at router 3.