Hi Anil,
You will have channel between your adminconsole and LDAP secure but you can have performance issues
Look the next link and IBM L3 response:
Slow Logon to Admin Console after implementing federated repository
www.websphereusergroup.org/go/thread/vie... I don't know if the "problem" persist in v8 or v8.5.X
Hope this helps.
regards