You want to create a shortcut trust between two AD domains in the same forest or in different forests. Shortcut trusts can make the authentication process more efficient between two domains in a forest.
220.127.116.11 Using a graphical user interface
18.104.22.168 Using a command-line interface
> netdom trust <Domain1DNSName> /Domain:<Domain2DNSName> /Twoway /ADD[RETURN] [/UserD:<Domain2AdminUser> /PasswordD:*][RETURN] [/UserO:<Domain1AdminUser> /PasswordO:*]
To create a shortcut trust from the emea.rallencorp.com domain to the apac.rallencorp.com domain, use the following netdom command:
> netdom trust emea.rallencorp.com /Domain:apac.rallencorp.com /Twoway /ADD[RETURN] /UserD:email@example.com /PasswordD:*[RETURN] /UserO:firstname.lastname@example.org /PasswordO:*
Consider the forest in Figure 2-6. It has five domains in a single domain tree. In order for authentication requests for Domain 3 to be processed by Domain 5, the request must traverse the path from Domain 3 to Domain 2 to Domain 1 to Domain 4 to Domain 5. If you create a shortcut trust between Domain 3 and Domain 5, the authentication path is just a single hop from Domain 3 to Domain 5. To create a shortcut trust, you must be a member of the Domain Admins group in both domains, or a member of the Enterprise Admins group.
Figure 2-6. Shortcut trust