1 00:00:06,380 --> 00:00:14,980 To most administrators a site is a physical location such as an office or a city that is separated by 2 00:00:14,980 --> 00:00:16,480 a one connection. 3 00:00:16,480 --> 00:00:24,100 These sites connect physically by network links that can vary in a way global bandwidth together the 4 00:00:24,100 --> 00:00:31,660 physical locations and links make up the physical network infrastructure aided years represents the 5 00:00:31,660 --> 00:00:41,230 physical network infrastructure with objects or sites aided in site objects are stored in the configuration 6 00:00:41,230 --> 00:00:48,340 container and are used to achieve three primary service management tasks. 7 00:00:48,340 --> 00:00:57,250 They are used to achieve manage replication traffic task providing service localization task and link 8 00:00:57,610 --> 00:01:01,800 group policy objects to a site task. 9 00:01:01,870 --> 00:01:09,130 Let's review each of them manage your application traffic an active directory site represents a highly 10 00:01:09,130 --> 00:01:12,180 connected portion of your enterprise. 11 00:01:12,250 --> 00:01:20,380 When you define aside the domain controllers within the site replay key changes almost instantly. 12 00:01:20,380 --> 00:01:26,440 However you can manage and schedule replication between sites as needed. 13 00:01:26,440 --> 00:01:33,580 Typically there are two types of network connections within an enterprise environment highly connected 14 00:01:33,670 --> 00:01:35,510 and less highly connected. 15 00:01:35,750 --> 00:01:44,410 Conceptually I change my to edit s should replicate immediately to other domain controllers within the 16 00:01:44,410 --> 00:01:48,220 highly connected network in which the change occured. 17 00:01:48,550 --> 00:01:54,320 However you might not want the change to replicate to another site immediately. 18 00:01:54,460 --> 00:02:02,950 If you have a slower more expansive and less reliable link instead you might want to optimize performance 19 00:02:03,280 --> 00:02:11,830 reduce costs and manage bandwidth by managing replication over less highly connected segments of your 20 00:02:11,830 --> 00:02:18,920 enterprise and other service management task of sites is to provide service localization. 21 00:02:18,940 --> 00:02:28,030 Active Directory sites help you localize services including those that domain controllers provide during 22 00:02:28,070 --> 00:02:35,080 sign in windows clients are directed automatically to domain controllers and there are sites. 23 00:02:35,140 --> 00:02:42,250 If domain controllers are not available in their sites then they are directed to domain controllers 24 00:02:42,550 --> 00:02:48,190 in the nearest site that can authenticate the client efficiently. 25 00:02:48,190 --> 00:02:58,300 Many other services such as replicated DFS resources also our society aware to ensure that users are 26 00:02:58,300 --> 00:03:07,720 directed to a local copy of the resource and the last management task which side performed is to link 27 00:03:07,720 --> 00:03:11,990 group policy objects or GP always to a site. 28 00:03:12,040 --> 00:03:20,710 In that case the site represents the top of the 80 days GPO hierarchy and the 80 days GPO settings are 29 00:03:20,710 --> 00:03:22,870 applied here first. 30 00:03:22,920 --> 00:03:25,960 No what are subnet objects. 31 00:03:26,050 --> 00:03:33,930 Subnet objects identify the network addresses that map computers to Active Directory sites. 32 00:03:34,000 --> 00:03:43,240 A subnet is a segment of our DCP IP a network to reach a set of logical IP addresses are assigned because 33 00:03:43,240 --> 00:03:47,050 subnet objects map to the physical network. 34 00:03:47,050 --> 00:03:48,670 So do the sites. 35 00:03:48,760 --> 00:03:53,020 A site can consist of one or more subnets. 36 00:03:53,020 --> 00:04:01,240 For example if your network has three subnets in New York and two in London you can create a site in 37 00:04:01,240 --> 00:04:08,620 New York and one in London respectively and then add the subnets to the respective sites. 38 00:04:08,770 --> 00:04:16,000 Please note that when you design your edit air site configuration it is critical that you correctly 39 00:04:16,000 --> 00:04:18,820 map IP subnets two sides. 40 00:04:18,910 --> 00:04:26,590 Likewise you the underlying network configuration changes you must ensure that these changes are updated 41 00:04:26,920 --> 00:04:36,100 to reflect the current IP subnet 2 side mapping domain controllers use the IP subnet information in 42 00:04:36,160 --> 00:04:43,480 ADT s to map client computers and servers to the correct HDD side. 43 00:04:43,570 --> 00:04:52,140 If this mapping is not accurate you might experience disruption to your HDD operations such as sine 44 00:04:52,150 --> 00:05:00,040 and traffic out group policy application because they likely will occur across when links know some 45 00:05:00,040 --> 00:05:01,460 words about default. 46 00:05:01,460 --> 00:05:11,500 First side HDD creates a default side you install with a Forest's first domain controller by default. 47 00:05:11,550 --> 00:05:15,570 This site is named default first side name. 48 00:05:15,570 --> 00:05:22,820 You can rename this site to a more descriptive name when you install the forests first domain controller. 49 00:05:23,010 --> 00:05:27,310 Edit is automatically places it in the default site. 50 00:05:27,480 --> 00:05:34,950 If you have a single side it is not necessary to configure a subnets or additional site because all 51 00:05:34,950 --> 00:05:40,770 machines will be covered by the default first site name default site. 52 00:05:41,040 --> 00:05:47,130 However multiple sites should have subnets associated with them as needed.