1 1 00:00:00,540 --> 00:00:01,810 Network management. 2 2 00:00:01,810 --> 00:00:03,030 In this section of the course, 3 3 00:00:03,030 --> 00:00:05,360 we're going to talk about network management. 4 4 00:00:05,360 --> 00:00:08,010 Now network management is the process of administering 5 5 00:00:08,010 --> 00:00:09,860 and managing computer networks. 6 6 00:00:09,860 --> 00:00:11,350 When you perform network management, 7 7 00:00:11,350 --> 00:00:13,050 you're involved with thought analysis, 8 8 00:00:13,050 --> 00:00:14,150 performance management, 9 9 00:00:14,150 --> 00:00:15,830 provisioning of networks and clients, 10 10 00:00:15,830 --> 00:00:17,920 as well as maintaining the quality of service. 11 11 00:00:17,920 --> 00:00:19,380 To properly manage your network, 12 12 00:00:19,380 --> 00:00:20,250 you need to ensure that you have 13 13 00:00:20,250 --> 00:00:22,320 the right network documentation in place, 14 14 00:00:22,320 --> 00:00:24,330 which includes the physical network diagrams, 15 15 00:00:24,330 --> 00:00:26,870 logical network diagrams, wiring diagrams, 16 16 00:00:26,870 --> 00:00:29,570 site survey reports, audit and assessment reports, 17 17 00:00:29,570 --> 00:00:31,180 and baseline configurations, 18 18 00:00:31,180 --> 00:00:32,410 as these are some of the key 19 19 00:00:32,410 --> 00:00:34,960 and foundational pieces of documentation necessary 20 20 00:00:34,960 --> 00:00:37,280 to fully understand where your network resides 21 21 00:00:37,280 --> 00:00:38,810 and how it operates. 22 22 00:00:38,810 --> 00:00:41,270 Also, you need to look at various performance metrics 23 23 00:00:41,270 --> 00:00:44,160 and sensor data from across your network and its devices. 24 24 00:00:44,160 --> 00:00:46,290 For example, if you don't know that one of your routers 25 25 00:00:46,290 --> 00:00:48,670 is experiencing high processor utilization, 26 26 00:00:48,670 --> 00:00:51,370 you may not be able to predict an upcoming network failure 27 27 00:00:51,370 --> 00:00:53,340 or prevent it from occurring. 28 28 00:00:53,340 --> 00:00:55,700 As you manage your network, you're also going to be working 29 29 00:00:55,700 --> 00:00:58,290 to monitor the data flowing across this network, 30 30 00:00:58,290 --> 00:00:59,123 which means you need to be able 31 31 00:00:59,123 --> 00:01:01,840 to use things like NetFlow data to better understand 32 32 00:01:01,840 --> 00:01:03,830 where this data is flowing. 33 33 00:01:03,830 --> 00:01:05,150 On a network device level, 34 34 00:01:05,150 --> 00:01:07,250 you can also manage individual interfaces 35 35 00:01:07,250 --> 00:01:09,140 by considering their status, statistics 36 36 00:01:09,140 --> 00:01:10,750 and the errors they generate. 37 37 00:01:10,750 --> 00:01:12,540 Finally, it becomes really important 38 38 00:01:12,540 --> 00:01:14,100 to understand the environmental factors 39 39 00:01:14,100 --> 00:01:15,450 that can affect your network. 40 40 00:01:15,450 --> 00:01:17,940 After all, our network devices are not operating 41 41 00:01:17,940 --> 00:01:19,000 in the middle of nowhere, 42 42 00:01:19,000 --> 00:01:21,430 but instead they're located inside of our data centers 43 43 00:01:21,430 --> 00:01:23,230 and telecommunication closets. 44 44 00:01:23,230 --> 00:01:25,200 To keep them operating at peak performance, 45 45 00:01:25,200 --> 00:01:27,040 our devices need to ensure they're experiencing 46 46 00:01:27,040 --> 00:01:28,520 the right environmental conditions, 47 47 00:01:28,520 --> 00:01:29,760 and that means we have to make sure 48 48 00:01:29,760 --> 00:01:32,440 these devices have the proper power, space and cooling 49 49 00:01:32,440 --> 00:01:34,290 within their operating environments. 50 50 00:01:34,290 --> 00:01:37,620 So in this section, we're going to focus on domain three, 51 51 00:01:37,620 --> 00:01:39,440 network operations, and we're going to talk 52 52 00:01:39,440 --> 00:01:41,850 about objectives 3.1 and 3.2. 53 53 00:01:41,850 --> 00:01:44,120 Objective 3.1 states that given a scenario, 54 54 00:01:44,120 --> 00:01:46,560 you must use the appropriate statistics and sensors 55 55 00:01:46,560 --> 00:01:48,270 to ensure network availability. 56 56 00:01:48,270 --> 00:01:50,740 And objective 3.2 states that you must explain 57 57 00:01:50,740 --> 00:01:53,580 the purpose of organizational documents and policies. 58 58 00:01:53,580 --> 00:01:56,300 So let's get started with our coverage of network management 59 59 00:01:56,300 --> 00:01:57,800 in this section of the course. 60 60 00:01:58,968 --> 00:02:01,220 (electricity buzzing)