Can ISE join to 3 domains with Same Name

[azhar_eaggle1]

we have 3 AD domains with Same name in our environment, can ISE join to 3 domains as 3 have same name ?

[Jason Kunst · Accepted solution]

I am pretty sure the answer is no, each domain would have to be unique

[hslai · Accepted solution]

NetBIOS names possibly duplicate but DNS names must be unique. The DNS servers configured in ISE need to be able to resolve properly all the domains that ISE joins to and authenticates/authorizes against.