To most administrators a site is a physical location such as an office or a city that is separated by
a one connection.
These sites connect physically by network links that can vary in a way global bandwidth together the
physical locations and links make up the physical network infrastructure aided years represents the
physical network infrastructure with objects or sites aided in site objects are stored in the configuration
container and are used to achieve three primary service management tasks.
They are used to achieve manage replication traffic task providing service localization task and link
group policy objects to a site task.
Let's review each of them manage your application traffic an active directory site represents a highly
connected portion of your enterprise.
When you define aside the domain controllers within the site replay key changes almost instantly.
However you can manage and schedule replication between sites as needed.
Typically there are two types of network connections within an enterprise environment highly connected
and less highly connected.
Conceptually I change my to edit s should replicate immediately to other domain controllers within the
highly connected network in which the change occured.
However you might not want the change to replicate to another site immediately.
If you have a slower more expansive and less reliable link instead you might want to optimize performance
reduce costs and manage bandwidth by managing replication over less highly connected segments of your
enterprise and other service management task of sites is to provide service localization.
Active Directory sites help you localize services including those that domain controllers provide during
sign in windows clients are directed automatically to domain controllers and there are sites.
If domain controllers are not available in their sites then they are directed to domain controllers
in the nearest site that can authenticate the client efficiently.
Many other services such as replicated DFS resources also our society aware to ensure that users are
directed to a local copy of the resource and the last management task which side performed is to link
group policy objects or GP always to a site.
In that case the site represents the top of the 80 days GPO hierarchy and the 80 days GPO settings are
applied here first.
No what are subnet objects.
Subnet objects identify the network addresses that map computers to Active Directory sites.
A subnet is a segment of our DCP IP a network to reach a set of logical IP addresses are assigned because
subnet objects map to the physical network.
So do the sites.
A site can consist of one or more subnets.
For example if your network has three subnets in New York and two in London you can create a site in
New York and one in London respectively and then add the subnets to the respective sites.
Please note that when you design your edit air site configuration it is critical that you correctly
map IP subnets two sides.
Likewise you the underlying network configuration changes you must ensure that these changes are updated
to reflect the current IP subnet 2 side mapping domain controllers use the IP subnet information in
ADT s to map client computers and servers to the correct HDD side.
If this mapping is not accurate you might experience disruption to your HDD operations such as sine
and traffic out group policy application because they likely will occur across when links know some
words about default.
First side HDD creates a default side you install with a Forest's first domain controller by default.
This site is named default first side name.
You can rename this site to a more descriptive name when you install the forests first domain controller.
Edit is automatically places it in the default site.
If you have a single side it is not necessary to configure a subnets or additional site because all
machines will be covered by the default first site name default site.
However multiple sites should have subnets associated with them as needed.