address>
racadm config -g cfgLanNetworking -o cfgDNSServer2 <secondary DNS IP
address>
• Using set command:
racadm set iDRAC.IPv4.DNSFromDHCP 0
racadm set iDRAC.IPv4.DNSFromDHCP.DNS1 <primary DNS IP address>
racadm set iDRAC.IPv4.DNSFromDHCP.DNS2 <secondary DNS IP address>
4. If you want to configure a list of user domains so that you only need to enter the user name when
logging in to the Web interface, enter the following command:
• Using config command: racadm config -g cfgUserDomain -o cfgUserDomainName
<fully qualified domain name or IP Address of the domain controller> -i
<index>
• Using set command: racadm set iDRAC.UserDomain.<index>.Name <fully qualified
domain name or IP Address of the domain controller>
You can configure up to 40 user domains with index numbers between 1 and 40.
Extended Schema Active Directory Overview
Using the extended schema solution requires the Active Directory schema extension.

Active Directory Schema Extensions

The Active Directory data is a distributed database of attributes and classes. The Active Directory schema
includes the rules that determine the type of data that can be added or included in the database. The user
class is one example of a class that is stored in the database. Some example user class attributes can
include the user’s first name, last name, phone number, and so on. You can extend the Active Directory
database by adding your own unique attributes and classes for specific requirements. Dell has extended
the schema to include the necessary changes to support remote management authentication and
authorization using Active Directory.
Each attribute or class that is added to an existing Active Directory Schema must be defined with a unique
ID. To maintain unique IDs across the industry, Microsoft maintains a database of Active Directory Object
Identifiers (OIDs) so that when companies add extensions to the schema, they can be guaranteed to be
unique and not to conflict with each other. To extend the schema in Microsoft's Active Directory, Dell
received unique OIDs, unique name extensions, and uniquely linked attribute IDs for the attributes and
classes that are added into the directory service:
• Extension is: dell
• Base OID is: 1.2.840.113556.1.8000.1280
• RAC LinkID range is: 12070 to 12079

Overview of iDRAC Schema Extensions

Dell has extended the schema to include an Association, Device, and Privilege property. The Association
property is used to link together the users or groups with a specific set of privileges to one or more
iDRAC devices. This model provides an administrator maximum flexibility over the different combinations
of users, iDRAC privileges, and iDRAC devices on the network without much complexity.
For each physical iDRAC device on the network that you want to integrate with Active Directory for
authentication and authorization, create at least one association object and one iDRAC device object.
You can create multiple association objects, and each association object can be linked to as many users,
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