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Over on the System Center Configuration Manager Team Blog, Carol Bailey posted some great information on Native Mode and certificates including a couple examples of multi-CA hierarchies. If this sounds like you then you'll definitely want to check this out:
We've seen this question come up a few times, and the simple answer is no - as long as the communicating computers have a trust in common, and the correct certificates are used, native mode works just fine. This trust in common can use a single certification authority (CA) hierarchy or multiple CA hierarchies. Because native mode is PKI-agnostic, this all happens at a lower level than Configuration Manager - we just need the PKI connection established before we can proceed with native mode communication.
To continue reading visit http://blogs.technet.com/configmgrteam/archive/2009/01/28/does-configuration-manager-native-mode-have-to-use-a-single-ca-hierarchy.aspx
J.C. Hornbeck | Manageability Knowledge Engineer
Feed: The Configuration Manager Support Team Blog Posted on: Monday, February 02, 2009 10:00 AM Author