1 00:00:12,290 --> 00:00:17,960 So we've been told that rather one is not able to ping rather four. 2 00:00:18,740 --> 00:00:22,400 So here's rather one show IPV six route. 3 00:00:22,850 --> 00:00:31,610 We can see that the IP version six routing table contains a directly connected network as well as a 4 00:00:31,610 --> 00:00:32,720 static route. 5 00:00:33,110 --> 00:00:35,390 This is a static default route. 6 00:00:35,540 --> 00:00:39,350 So can router one ping router to. 7 00:00:39,830 --> 00:00:40,940 Yes, it can. 8 00:00:41,540 --> 00:00:46,220 Can it ping router four and no, it can't. 9 00:00:46,340 --> 00:00:50,810 So it looks like the information that we've been given is correct. 10 00:00:51,140 --> 00:01:00,170 Trust but verify, as Ronald Reagan said, always check that what you've been told is true. 11 00:01:00,350 --> 00:01:06,770 So in networking, it's always a good idea to verify the information you've been given. 12 00:01:07,010 --> 00:01:09,740 So again, show IPV six route. 13 00:01:09,890 --> 00:01:18,440 We have a static default route, can write a one ping 2001 colon two colon colon one. 14 00:01:18,920 --> 00:01:20,630 This IP address on router two. 15 00:01:20,660 --> 00:01:21,770 Yes, it can. 16 00:01:23,170 --> 00:01:25,060 Can it ping router three? 17 00:01:25,210 --> 00:01:26,440 Yes, it can. 18 00:01:27,720 --> 00:01:31,920 What about this IP address on router three? 19 00:01:32,470 --> 00:01:35,490 Looks like it can't ping that IP address. 20 00:01:36,060 --> 00:01:46,800 Now, what we could also do is do a trace route to router four and see how far the traffic gets. 21 00:01:48,060 --> 00:01:53,040 After this point, it looks like the traffic only gets to router two. 22 00:01:53,520 --> 00:01:55,260 It doesn't get any further. 23 00:01:55,290 --> 00:02:02,280 So even though rather one can ping both this IP address and this IP address, a trace to router for 24 00:02:02,280 --> 00:02:07,170 breaks at router two, which tells us that there's probably an issue. 25 00:02:08,160 --> 00:02:09,479 On Router two. 26 00:02:09,900 --> 00:02:12,390 So let's have a look at router two. 27 00:02:16,150 --> 00:02:20,650 So he has rather two ping 2001. 28 00:02:21,130 --> 00:02:21,970 Colon three. 29 00:02:21,970 --> 00:02:24,010 Colon colon two. 30 00:02:24,840 --> 00:02:27,420 Right a two can definitely not ping right a for. 31 00:02:29,220 --> 00:02:32,040 What about the IP address on router three? 32 00:02:32,370 --> 00:02:38,880 Can't ping that IP address, but it can ping that IP address on router three. 33 00:02:39,060 --> 00:02:41,220 So show IPV six route. 34 00:02:41,670 --> 00:02:43,500 Can you see the problem? 35 00:02:43,860 --> 00:02:47,160 What's the issue on rather two? 36 00:02:47,550 --> 00:02:50,580 So rather two does have a static route. 37 00:02:50,610 --> 00:02:54,480 It's a default route, which is probably not a good idea. 38 00:02:54,810 --> 00:03:00,480 It's okay to have a default route en route to one and perhaps route of four pointing to the rest of 39 00:03:00,480 --> 00:03:01,410 the network. 40 00:03:02,010 --> 00:03:08,850 But this static default route doesn't make a lot of sense, especially because it's pointing back to 41 00:03:08,850 --> 00:03:09,690 router one. 42 00:03:10,020 --> 00:03:14,100 Now, rather than removing that, I'm going to add a more specific route. 43 00:03:16,040 --> 00:03:20,660 To show you that a more specific route will take precedence. 44 00:03:20,840 --> 00:03:29,450 So I need to use the command IPV six route and I'm going to add that route pointing to router three. 45 00:03:30,320 --> 00:03:32,570 So show IPV six route. 46 00:03:32,870 --> 00:03:39,290 We've still got the static default route in the routing table, but we've also got this more specific 47 00:03:39,290 --> 00:03:39,950 route. 48 00:03:40,280 --> 00:03:45,830 So can router two now ping router four? 49 00:03:45,860 --> 00:03:47,150 Yes, it can. 50 00:03:47,690 --> 00:03:57,140 The more specific route or longer match 64 bits is a longer match than zero bits takes precedence. 51 00:03:58,090 --> 00:04:05,770 More specific route takes precedence so rather to camping rather to fall back on writer one can write 52 00:04:05,770 --> 00:04:07,430 a one trace to root of four. 53 00:04:07,450 --> 00:04:12,670 Yes, it can can write a one ping route of four. 54 00:04:12,790 --> 00:04:13,960 Yes, it can. 55 00:04:14,260 --> 00:04:22,330 So in the exam, they will give you clearer information about whether you should remove the study grant 56 00:04:22,510 --> 00:04:27,090 or simply add a more specific route by adding a more specific route. 57 00:04:27,130 --> 00:04:29,200 Yeah, I've solved the problem. 58 00:04:29,290 --> 00:04:32,050 I can leave the static default Rorschach. 59 00:04:32,140 --> 00:04:34,440 But if I was told to. 60 00:04:36,180 --> 00:04:45,720 Or if I wanted to, I could remove that route and the network would still function because this network 61 00:04:45,720 --> 00:04:51,000 is directly connected to rather two and rather two knows about this network. 62 00:04:51,780 --> 00:04:53,760 Because of this study grant. 63 00:04:54,540 --> 00:04:59,310 So show IPv6 route, that static route is in the routing table. 64 00:04:59,820 --> 00:05:00,210 Right. 65 00:05:00,240 --> 00:05:06,930 A two can stall ping route of four can route a four ping router one. 66 00:05:07,740 --> 00:05:09,240 So he has right of four. 67 00:05:10,980 --> 00:05:15,120 Can it ping right of one. 68 00:05:15,120 --> 00:05:16,170 Yes, it can. 69 00:05:16,410 --> 00:05:19,410 Can it ping router two. 70 00:05:19,440 --> 00:05:20,670 Yes, it can. 71 00:05:21,030 --> 00:05:27,090 So we have IP connectivity in this network to ensure that everything works. 72 00:05:27,090 --> 00:05:28,530 You may want to test. 73 00:05:30,260 --> 00:05:35,090 Connectivity to every IP address in your network in the lab. 74 00:05:36,320 --> 00:05:41,150 To make sure that everything works as expected again in the exam. 75 00:05:41,210 --> 00:05:43,370 Read the question carefully. 76 00:05:44,570 --> 00:05:48,020 So that you complete what's required. 77 00:05:48,500 --> 00:05:51,590 Don't spend time on things that aren't necessary. 78 00:05:51,920 --> 00:05:53,300 So how did you do? 79 00:05:53,450 --> 00:05:55,700 Were you able to complete the lab? 80 00:05:56,060 --> 00:06:00,170 Were you able to troubleshoot the network issues in this lab? 81 00:06:00,530 --> 00:06:03,140 I hope you enjoying these troubleshooting videos.