<div class="gmail_quote">On Thu, Feb 23, 2012 at 4:19 PM, Beck, Christopher <span dir="ltr"><<a href="mailto:CBeck@usg.com">CBeck@usg.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div link="blue" vlink="purple" lang="EN-US"><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Having researched this, the root of that question comes down to the tree structure. While CUCM can have multiple sources for user synchronization (whether it is one LDAP source or multiple LDAP sources), it can currently authenticate against only one. Thus, you need a single source for authentication that will handle all users.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Also, to Lelio’s second point, whatever you choose to replicate as the user id (samUsername, UPN, etc.) has to be unique among all directories.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">If you don’t have a single namespace in the AD environment (and at least have everyone in a single forest), you should probably look at some sort of virtual ldap directory that can consolidate everything.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">-Chris<u></u><u></u></span></p>
</div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"></span><br></p></div></div><br></blockquote><div>That's my understanding also. This is currently a problem for us as a customer is splitting the company in two with totally separated ADs, but they still want LDAP sync/auth in the common UCM.<br>
<br>Apparently this can be solved, but as you said, UCM still has a single source for auth, and the connection between the two separate forrests must be done by the customers ADs configuring AD LDS/ADAM and what not.<br><br>
<a href="https://supportforums.cisco.com/docs/DOC-16356#Active_Directory_Multiple_Forest_Support_Scenario_in_Unified_CM">https://supportforums.cisco.com/docs/DOC-16356#Active_Directory_Multiple_Forest_Support_Scenario_in_Unified_CM</a><br>
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