1 1 00:00:00,590 --> 00:00:02,540 Network Platform Commands. 2 2 00:00:02,540 --> 00:00:03,440 In this video, 3 3 00:00:03,440 --> 00:00:05,440 we're going to cover the Network Platform Commands 4 4 00:00:05,440 --> 00:00:07,640 for the exam that you need to be aware of. 5 5 00:00:07,640 --> 00:00:09,030 Now, there are a lot more commands 6 6 00:00:09,030 --> 00:00:11,010 than what we're going to cover in this lesson. 7 7 00:00:11,010 --> 00:00:13,680 but for the exam, there are three you need to know. 8 8 00:00:13,680 --> 00:00:15,950 Now, when I mention the term network platforms, 9 9 00:00:15,950 --> 00:00:17,820 I'm talking about things like routers, switches, 10 10 00:00:17,820 --> 00:00:18,890 and firewalls. 11 11 00:00:18,890 --> 00:00:19,820 And for the exam, 12 12 00:00:19,820 --> 00:00:22,515 I want you to know the 'show interface', 'show config', 13 13 00:00:22,515 --> 00:00:23,740 and 'show route' commands 14 14 00:00:23,740 --> 00:00:25,320 and how we use them in maintaining 15 15 00:00:25,320 --> 00:00:27,060 and troubleshooting our networks. 16 16 00:00:27,060 --> 00:00:29,480 So, what is a network platform? 17 17 00:00:29,480 --> 00:00:31,610 Well, I know this sounds like a really funny term 18 18 00:00:31,610 --> 00:00:33,030 that CompTIA uses here. 19 19 00:00:33,030 --> 00:00:35,510 And when they refer to a network platform in the objectives, 20 20 00:00:35,510 --> 00:00:37,910 what they're really referring to is any router, switch 21 21 00:00:37,910 --> 00:00:41,290 or firewall regardless of the brand or manufacturer. 22 22 00:00:41,290 --> 00:00:42,820 This is because CompTIA exams 23 23 00:00:42,820 --> 00:00:44,750 are considered vendor neutral exams. 24 24 00:00:44,750 --> 00:00:46,900 So we're not asking you just about Cisco. 25 25 00:00:46,900 --> 00:00:48,590 We could be asking you about a Cisco router, 26 26 00:00:48,590 --> 00:00:50,890 a Juniper switch, or a Sidewinder firewall. 27 27 00:00:50,890 --> 00:00:52,120 It doesn't really matter. 28 28 00:00:52,120 --> 00:00:54,430 They're all considered network platforms. 29 29 00:00:54,430 --> 00:00:56,840 Now, each device manufacturer does create 30 30 00:00:56,840 --> 00:00:58,460 their own command line interface, 31 31 00:00:58,460 --> 00:01:00,410 that's going to be used to configure, monitor 32 32 00:01:00,410 --> 00:01:02,100 and troubleshoot their devices. 33 33 00:01:02,100 --> 00:01:04,810 But they're all pretty similar in their actual functions 34 34 00:01:04,810 --> 00:01:05,643 and commands 35 35 00:01:05,643 --> 00:01:07,690 and most of them are based off Cisco 36 36 00:01:07,690 --> 00:01:08,790 because they were one of the first, 37 37 00:01:08,790 --> 00:01:11,480 really big router and switch companies out there. 38 38 00:01:11,480 --> 00:01:12,400 For this lesson, 39 39 00:01:12,400 --> 00:01:14,640 we're going to focus on the three clearly outlined 40 40 00:01:14,640 --> 00:01:15,880 inside your objectives. 41 41 00:01:15,880 --> 00:01:19,540 Those are: 'show interface', 'show config' and 'show route'. 42 42 00:01:19,540 --> 00:01:22,230 These three terms are specific to Cisco devices, 43 43 00:01:22,230 --> 00:01:25,330 but similar commands exist for other manufacturers 44 44 00:01:25,330 --> 00:01:28,110 like Juniper and Sidewinder devices as well. 45 45 00:01:28,110 --> 00:01:29,710 For the 'show interface' command, 46 46 00:01:29,710 --> 00:01:32,420 you could use 'show interfaces' with an 'S' on it 47 47 00:01:32,420 --> 00:01:33,560 on a Juniper device. 48 48 00:01:33,560 --> 00:01:35,270 Or 'cf interface', 49 49 00:01:35,270 --> 00:01:36,990 which stands for configure interface 50 50 00:01:36,990 --> 00:01:38,520 on a Sidewinder firewall. 51 51 00:01:38,520 --> 00:01:40,330 It'll give you the same type of thing. 52 52 00:01:40,330 --> 00:01:43,260 Now for the 'show config' command on a Cisco device, 53 53 00:01:43,260 --> 00:01:46,000 you could use 'show configuration' on a Juniper device 54 54 00:01:46,000 --> 00:01:49,050 or 'cf config' on a Sidewinder device. 55 55 00:01:49,050 --> 00:01:50,690 Now for the 'show route' command, 56 56 00:01:50,690 --> 00:01:53,360 you would still use 'show route' on Juniper devices, 57 57 00:01:53,360 --> 00:01:57,390 but you use 'cf route status' on a Sidewinder firewall. 58 58 00:01:57,390 --> 00:01:58,520 For the exam though, 59 59 00:01:58,520 --> 00:02:00,520 you're only tested on the three I mentioned, 60 60 00:02:00,520 --> 00:02:03,750 'show interface', 'show config', and 'show route'. 61 61 00:02:03,750 --> 00:02:06,330 So let's take a look at these three specifically 62 62 00:02:06,330 --> 00:02:08,860 and what type of information you can get from them. 63 63 00:02:08,860 --> 00:02:10,940 First, we have 'show interface'. 64 64 00:02:10,940 --> 00:02:12,260 The 'show interface' command 65 65 00:02:12,260 --> 00:02:13,710 is going to display the statistics 66 66 00:02:13,710 --> 00:02:15,930 for a network interface on the device. 67 67 00:02:15,930 --> 00:02:18,080 Now, if you look at this specific interface, 68 68 00:02:18,080 --> 00:02:19,950 instead of all of the different interfaces, 69 69 00:02:19,950 --> 00:02:22,030 you'd want to enter 'show interface', 70 70 00:02:22,030 --> 00:02:24,870 and then use the ethernet interface you want to look at. 71 71 00:02:24,870 --> 00:02:28,840 For example, "show interface ethernet 1/1". 72 72 00:02:28,840 --> 00:02:32,480 This would display only the statistics for ethernet 1/1, 73 73 00:02:32,480 --> 00:02:35,790 that specific interface in port on that switch or router. 74 74 00:02:35,790 --> 00:02:38,010 Now, when you use the 'show interface' command, 75 75 00:02:38,010 --> 00:02:40,200 you can see if the interface is up or down, 76 76 00:02:40,200 --> 00:02:42,030 if the line protocol is up or down 77 77 00:02:42,030 --> 00:02:44,130 and some key statistics that'll help you determine 78 78 00:02:44,130 --> 00:02:45,940 if there's any network issues. 79 79 00:02:45,940 --> 00:02:48,120 First, you should look at whether the internet address 80 80 00:02:48,120 --> 00:02:49,210 is a valid address, 81 81 00:02:49,210 --> 00:02:51,780 or do you have an IP address that was assigned 82 82 00:02:51,780 --> 00:02:53,720 because you had a DHCP issue. 83 83 00:02:53,720 --> 00:02:55,170 If you see an IP address, 84 84 00:02:55,170 --> 00:02:57,750 that means you need to investigate your DHCP. 85 85 00:02:57,750 --> 00:02:59,530 Second, you should look at the bandwidth 86 86 00:02:59,530 --> 00:03:01,410 and see if it matches your cable type. 87 87 00:03:01,410 --> 00:03:02,320 In this example, 88 88 00:03:02,320 --> 00:03:05,000 the bandwidth is set to 10,000 kilobits per second, 89 89 00:03:05,000 --> 00:03:07,280 or 10 megabits per second. 90 90 00:03:07,280 --> 00:03:08,780 This means the interface thinks 91 91 00:03:08,780 --> 00:03:10,590 it's using a CAT 3 cable. 92 92 00:03:10,590 --> 00:03:11,830 Now, if this is incorrect 93 93 00:03:11,830 --> 00:03:14,610 and you're actually using a CAT 5 or CAT 6 cable, 94 94 00:03:14,610 --> 00:03:16,250 that cable may be damaged, 95 95 00:03:16,250 --> 00:03:17,920 which is why the device is only reporting 96 96 00:03:17,920 --> 00:03:20,440 that it's capable of 10 megabits per second. 97 97 00:03:20,440 --> 00:03:23,100 Third, you want to look at your MTU size. 98 98 00:03:23,100 --> 00:03:26,180 By default, this is going to be set to 1500 bytes, 99 99 00:03:26,180 --> 00:03:28,380 but if you're using a storage area network, 100 100 00:03:28,380 --> 00:03:30,010 you might want to use jumbo frames 101 101 00:03:30,010 --> 00:03:33,630 and use something as large as up to 9,000 bytes in size. 102 102 00:03:33,630 --> 00:03:36,300 This is going to depend on what network you're looking at. 103 103 00:03:36,300 --> 00:03:39,130 Also, you should check to see if there's any runs, giants, 104 104 00:03:39,130 --> 00:03:40,800 or errors in the statistics, 105 105 00:03:40,800 --> 00:03:43,520 as these are all indications of potential problems. 106 106 00:03:43,520 --> 00:03:45,630 Finally, you should check for collisions. 107 107 00:03:45,630 --> 00:03:47,910 If you're running full duplex on a switch or router, 108 108 00:03:47,910 --> 00:03:49,400 there should not be any collisions 109 109 00:03:49,400 --> 00:03:52,170 because each switch port is its own collision domain. 110 110 00:03:52,170 --> 00:03:55,450 In this example, I see there are 432 collisions, 111 111 00:03:55,450 --> 00:03:57,700 which indicates there's an issue on this switch port, 112 112 00:03:57,700 --> 00:04:00,140 or maybe somebody is connected to hubs that switch port 113 113 00:04:00,140 --> 00:04:01,330 downstream. 114 114 00:04:01,330 --> 00:04:03,540 Now next we have the 'show config'. 115 115 00:04:03,540 --> 00:04:05,910 Now 'show config' is a command that's used to display 116 116 00:04:05,910 --> 00:04:08,490 the current system configuration to your screen. 117 117 00:04:08,490 --> 00:04:10,230 When you use the 'show config' command, 118 118 00:04:10,230 --> 00:04:11,850 there are no options or arguments. 119 119 00:04:11,850 --> 00:04:13,980 It's just going to be entered as 'show config', 120 120 00:04:13,980 --> 00:04:15,360 and you'll hit enter. 121 121 00:04:15,360 --> 00:04:16,600 Now for the exam, 122 122 00:04:16,600 --> 00:04:18,780 you do not need to understand each and every line 123 123 00:04:18,780 --> 00:04:20,220 of this configuration. 124 124 00:04:20,220 --> 00:04:22,200 If you move into being a network administrator 125 125 00:04:22,200 --> 00:04:23,120 and you decide to take your 126 126 00:04:23,120 --> 00:04:26,780 Cisco certified network associate certification or CCNA, 127 127 00:04:26,780 --> 00:04:27,930 you're going to be expected to know 128 128 00:04:27,930 --> 00:04:29,270 each and every line of this. 129 129 00:04:29,270 --> 00:04:30,270 But for now, 130 130 00:04:30,270 --> 00:04:32,140 you should be able to read through this configuration 131 131 00:04:32,140 --> 00:04:34,230 and identify some key areas. 132 132 00:04:34,230 --> 00:04:35,980 First, we have the shared secrets 133 133 00:04:35,980 --> 00:04:37,230 that are being stored towards the beginning 134 134 00:04:37,230 --> 00:04:38,690 of the configuration file, 135 135 00:04:38,690 --> 00:04:40,060 as well as some basic items 136 136 00:04:40,060 --> 00:04:41,840 that allow us to configure things like our prompt 137 137 00:04:41,840 --> 00:04:43,370 and our message of the day. 138 138 00:04:43,370 --> 00:04:45,540 Next we get into some system settings, 139 139 00:04:45,540 --> 00:04:46,860 such as the system baud rate, 140 140 00:04:46,860 --> 00:04:49,800 which is currently set to 9,600 bits per second, 141 141 00:04:49,800 --> 00:04:52,170 when I'm communicating over a console port. 142 142 00:04:52,170 --> 00:04:54,130 Next, we have some SNMP settings, 143 143 00:04:54,130 --> 00:04:56,310 including enabling or disabling some of the traps 144 144 00:04:56,310 --> 00:04:57,143 for this device, 145 145 00:04:57,143 --> 00:04:59,580 so it can report back to an SNMP manager. 146 146 00:04:59,580 --> 00:05:01,810 In this case, they're all disabled. 147 147 00:05:01,810 --> 00:05:03,960 Next, we're going to have some IP settings 148 148 00:05:03,960 --> 00:05:08,070 such as those two interface I have "sc0" and "sl0". 149 149 00:05:08,070 --> 00:05:10,340 You can see the "sc0" is being set up to use 150 150 00:05:10,340 --> 00:05:12,130 a class B private IP of 151 151 00:05:12,130 --> 00:05:15,770 172.16.25.142. 152 152 00:05:15,770 --> 00:05:18,620 And a route was set to allow traffic out the gateway router 153 153 00:05:18,620 --> 00:05:22,200 at 172.16.1.201. 154 154 00:05:22,200 --> 00:05:24,910 Now next we have our VMPS, 155 155 00:05:24,910 --> 00:05:27,260 which is the VLAN Management Policy Server. 156 156 00:05:27,260 --> 00:05:28,093 In this case, 157 157 00:05:28,093 --> 00:05:30,210 we have it set to a TFTP server at 158 158 00:05:30,210 --> 00:05:31,830 1.1.1.1, 159 159 00:05:31,830 --> 00:05:33,660 and it is set to enable. 160 160 00:05:33,660 --> 00:05:35,970 Next, we have our DNS set up for this device, 161 161 00:05:35,970 --> 00:05:38,130 and this is set up to use two DNS servers, 162 162 00:05:38,130 --> 00:05:39,170 a primary one at 163 163 00:05:39,170 --> 00:05:42,120 198.92.30.32, 164 164 00:05:42,120 --> 00:05:43,169 and a backup at 165 165 00:05:43,169 --> 00:05:46,810 171.69.2.132. 166 166 00:05:46,810 --> 00:05:47,970 Both of these are enabled, 167 167 00:05:47,970 --> 00:05:50,120 and our DNS domain is cisco.com 168 168 00:05:50,120 --> 00:05:52,130 because this is a sample configuration file 169 169 00:05:52,130 --> 00:05:54,160 that was created for use by Cisco. 170 170 00:05:54,160 --> 00:05:56,650 Next, we have our TACacs plus configuration, 171 171 00:05:56,650 --> 00:05:57,820 including servers, 172 172 00:05:57,820 --> 00:05:59,310 the number of invalid attempts allowed 173 173 00:05:59,310 --> 00:06:00,800 and the timeout period. 174 174 00:06:00,800 --> 00:06:03,440 After that, we have the configuration for an older protocol 175 175 00:06:03,440 --> 00:06:04,690 known as IPX. 176 176 00:06:04,690 --> 00:06:07,090 And this device is set to allow IPX traffic 177 177 00:06:07,090 --> 00:06:09,150 to be bridged into this network. 178 178 00:06:09,150 --> 00:06:11,330 Next, we have the VTP settings, 179 179 00:06:11,330 --> 00:06:13,380 which are going to allow us to be in server mode. 180 180 00:06:13,380 --> 00:06:16,770 Remember VTP is the VLAN Trunking Protocol. 181 181 00:06:16,770 --> 00:06:19,930 And this is a proprietary protocol used by Cisco devices 182 182 00:06:19,930 --> 00:06:22,100 to exchange VLAN information. 183 183 00:06:22,100 --> 00:06:24,870 After that, we have some spanning tree protocol settings 184 184 00:06:24,870 --> 00:06:27,120 specifically that we have enabled STP 185 185 00:06:27,120 --> 00:06:29,560 leave a max age set at 20. 186 186 00:06:29,560 --> 00:06:33,070 After that, we have CGMP, which is set to enable. 187 187 00:06:33,070 --> 00:06:35,710 Now, CGMP is not something we've talked about before 188 188 00:06:35,710 --> 00:06:36,670 in this course, 189 189 00:06:36,670 --> 00:06:38,910 but this is a Cisco specific thing. 190 190 00:06:38,910 --> 00:06:41,770 CGMP is the Cisco Group Management Protocol, 191 191 00:06:41,770 --> 00:06:45,450 it's an older form of IGP used by Cisco switches. 192 192 00:06:45,450 --> 00:06:46,750 Next we have CIS Log. 193 193 00:06:46,750 --> 00:06:49,140 And in this case, it's set to enabled for the console 194 194 00:06:49,140 --> 00:06:51,170 and it's set to disabled for the server. 195 195 00:06:51,170 --> 00:06:53,260 All the logging levels are set here as well 196 196 00:06:53,260 --> 00:06:55,630 and you could see they're either two or five, 197 197 00:06:55,630 --> 00:06:57,960 anything above those numbers would not be forwarded 198 198 00:06:57,960 --> 00:06:59,510 or logged by CIS log. 199 199 00:06:59,510 --> 00:07:01,820 Now, after that, we have the NTP section, 200 200 00:07:01,820 --> 00:07:04,100 which configures our Network Time Protocol server 201 201 00:07:04,100 --> 00:07:05,160 that we're going to use, 202 202 00:07:05,160 --> 00:07:06,590 including what time zone we're in 203 203 00:07:06,590 --> 00:07:09,800 and if we're going to enable NTP clients or not. 204 204 00:07:09,800 --> 00:07:11,550 After that, we have a permit list, 205 205 00:07:11,550 --> 00:07:13,370 which is essentially an ACL. 206 206 00:07:13,370 --> 00:07:16,490 In this case, the permit list is set to disabled. 207 207 00:07:16,490 --> 00:07:19,210 Finally, we have the first module in our device, 208 208 00:07:19,210 --> 00:07:21,870 a two port 100 base TX device. 209 209 00:07:21,870 --> 00:07:24,010 So this is a fast ethernet device. 210 210 00:07:24,010 --> 00:07:26,120 Here, you can see what has been enabled and disabled 211 211 00:07:26,120 --> 00:07:28,540 on this particular module or interface. 212 212 00:07:28,540 --> 00:07:31,440 As I said, you don't need to be an expert on any of this. 213 213 00:07:31,440 --> 00:07:33,220 I just wanted to show you what it looked like 214 214 00:07:33,220 --> 00:07:34,810 inside of a configuration file, 215 215 00:07:34,810 --> 00:07:37,060 when you use the 'show config' command, 216 216 00:07:37,060 --> 00:07:39,070 our third command is ''show route''. 217 217 00:07:39,070 --> 00:07:40,590 The 'show route' command is going to be used 218 218 00:07:40,590 --> 00:07:42,350 to display the current state of the routing table 219 219 00:07:42,350 --> 00:07:43,410 on the device. 220 220 00:07:43,410 --> 00:07:45,680 More accurately, we're normally going to enter this command 221 221 00:07:45,680 --> 00:07:48,200 as show IP route and hitting enter. 222 222 00:07:48,200 --> 00:07:49,570 This is because we normally want to see 223 223 00:07:49,570 --> 00:07:51,770 the routes associated with IP based networks, 224 224 00:07:51,770 --> 00:07:53,170 for most of our networks. 225 225 00:07:53,170 --> 00:07:55,950 Most of us aren't running any networks that aren't IP based. 226 226 00:07:55,950 --> 00:07:58,090 For example, you're probably not running an IPX 227 227 00:07:58,090 --> 00:08:00,060 or AppleTalk network anymore. 228 228 00:08:00,060 --> 00:08:02,090 Now here's an example of a router that I have 229 229 00:08:02,090 --> 00:08:04,240 that I've entered show IP route on. 230 230 00:08:04,240 --> 00:08:05,073 Here you can see, 231 231 00:08:05,073 --> 00:08:07,590 first we have a legend that shows us all the different codes 232 232 00:08:07,590 --> 00:08:08,690 and what they mean. 233 233 00:08:08,690 --> 00:08:11,120 Then we see the gateway of last resort, 234 234 00:08:11,120 --> 00:08:12,920 which is our default gateway that we're going to use, 235 235 00:08:12,920 --> 00:08:15,110 if we can't route traffic to any of the other routes 236 236 00:08:15,110 --> 00:08:16,580 that are listed below. 237 237 00:08:16,580 --> 00:08:17,920 As you look at those routes, 238 238 00:08:17,920 --> 00:08:20,060 you can see they're written in three columns. 239 239 00:08:20,060 --> 00:08:21,280 The first column indicates 240 240 00:08:21,280 --> 00:08:22,920 how the route is going to be derived. 241 241 00:08:22,920 --> 00:08:26,750 Is it from IGRP, RIP, OSPF, directly connected, 242 242 00:08:26,750 --> 00:08:30,210 a static route, EGP derived, or BGP derived? 243 243 00:08:30,210 --> 00:08:31,790 Then we have our second column 244 244 00:08:31,790 --> 00:08:33,530 and this tells us the type of route it is, 245 245 00:08:33,530 --> 00:08:35,430 when we learn it through OSPF. 246 246 00:08:35,430 --> 00:08:36,263 In this example, 247 247 00:08:36,263 --> 00:08:37,950 we have three of these types of routes 248 248 00:08:37,950 --> 00:08:40,280 and they're listed as E2, for OSPF, 249 249 00:08:40,280 --> 00:08:42,240 external type 2 routes. 250 250 00:08:42,240 --> 00:08:44,680 Then we have the address of the remote network, 251 251 00:08:44,680 --> 00:08:47,710 such as 150.150.0.0. 252 252 00:08:47,710 --> 00:08:50,380 And then we see a pair of numbers inside some brackets. 253 253 00:08:50,380 --> 00:08:53,530 In this example, it's 160/5. 254 254 00:08:53,530 --> 00:08:56,430 This means 160 is the administrative distance 255 255 00:08:56,430 --> 00:08:57,770 of the information source 256 256 00:08:57,770 --> 00:09:00,210 and five is the metric for this route. 257 257 00:09:00,210 --> 00:09:03,180 Next, we see the via and an IP address, 258 258 00:09:03,180 --> 00:09:04,790 which is the address of the next router 259 259 00:09:04,790 --> 00:09:06,210 to the remote network. 260 260 00:09:06,210 --> 00:09:08,030 After that we see a time 261 261 00:09:08,030 --> 00:09:10,240 and this is the last time the route was updated. 262 262 00:09:10,240 --> 00:09:12,560 It's written in hours, minutes and seconds. 263 263 00:09:12,560 --> 00:09:15,150 So this first route is only one minute old. 264 264 00:09:15,150 --> 00:09:17,700 Finally, we have the interface use for a specified network 265 265 00:09:17,700 --> 00:09:18,760 in this route. 266 266 00:09:18,760 --> 00:09:20,170 In this case, ethernet 2 267 267 00:09:20,170 --> 00:09:22,040 is designated as the path for sending traffic 268 268 00:09:22,040 --> 00:09:23,660 to this particular network. 269 269 00:09:23,660 --> 00:09:26,740 So, as you can see from this show IP route command 270 270 00:09:26,740 --> 00:09:30,200 that OSPF routes have an administrative distance of 160 271 271 00:09:30,200 --> 00:09:31,870 and a metric of only five. 272 272 00:09:31,870 --> 00:09:34,790 The EGP routes have an administrative distance of 200 273 273 00:09:34,790 --> 00:09:37,810 and a metric of either 128 or 129. 274 274 00:09:37,810 --> 00:09:40,450 This tells me that the router trusts the OSPS routes 275 275 00:09:40,450 --> 00:09:43,180 more than it trust the EGP routes, right? 276 276 00:09:43,180 --> 00:09:44,100 Now this makes sense 277 277 00:09:44,100 --> 00:09:45,760 if you think back to our previous discussions 278 278 00:09:45,760 --> 00:09:46,890 on broader protocols, 279 279 00:09:46,890 --> 00:09:49,220 administrative distances and the believability 280 280 00:09:49,220 --> 00:09:50,640 of these metrics. 281 281 00:09:50,640 --> 00:09:53,600 All right, let's look one more time at the show IP route, 282 282 00:09:53,600 --> 00:09:55,550 but this time on a different router. 283 283 00:09:55,550 --> 00:09:58,210 Here, you could see a router that has fewer routes. 284 284 00:09:58,210 --> 00:10:00,420 In this router. I only have four routes. 285 285 00:10:00,420 --> 00:10:03,970 My default, route of one 60.89.0.0, 286 286 00:10:03,970 --> 00:10:05,560 and then three subnets. 287 287 00:10:05,560 --> 00:10:07,520 Here, you can see the connected route is showing 288 288 00:10:07,520 --> 00:10:10,110 as possibly being down on ethernet zero. 289 289 00:10:10,110 --> 00:10:12,680 Next, we see two IGRP derive routes 290 290 00:10:12,680 --> 00:10:16,330 and they're using ISIS level 2 as the route type. 291 291 00:10:16,330 --> 00:10:18,310 These routes have a lower administrative distance 292 292 00:10:18,310 --> 00:10:21,410 than the OSPF an EGP routes that we looked at earlier, 293 293 00:10:21,410 --> 00:10:24,390 but their metric is a bit higher than an OSPF one 294 294 00:10:24,390 --> 00:10:25,760 that we saw before. 295 295 00:10:25,760 --> 00:10:27,440 Now, if you wanted to get additional details 296 296 00:10:27,440 --> 00:10:29,170 on any of these specific routes, 297 297 00:10:29,170 --> 00:10:31,020 you could enter show IP route 298 298 00:10:31,020 --> 00:10:32,880 and the IP address for that network 299 299 00:10:32,880 --> 00:10:34,060 to get additional details, 300 300 00:10:34,060 --> 00:10:36,480 including its routing metrics, reliability, 301 301 00:10:36,480 --> 00:10:37,550 the delay on the network, 302 302 00:10:37,550 --> 00:10:40,020 and even the hop count as you can see here. 303 303 00:10:40,020 --> 00:10:41,180 So in summary, 304 304 00:10:41,180 --> 00:10:43,350 you need to remember that 'show interface' 305 305 00:10:43,350 --> 00:10:45,430 gives you the statistics for an interface 306 306 00:10:45,430 --> 00:10:47,170 that 'show config' is used to display 307 307 00:10:47,170 --> 00:10:48,760 the current configuration on device 308 308 00:10:48,760 --> 00:10:51,140 and 'show route' is going to be used to get information 309 309 00:10:51,140 --> 00:10:53,890 from the routes learned by a particular network device. 310 310 00:10:55,212 --> 00:10:57,224 (upbeat music)