AFAIK the clients will first contact the last DC which is stored in the registry, this DC will verify their IP with the site-informations stored in AD. He will reply the sites DCs to the client in the NetlogonEx-Packet, and the client will try to contact one of these. Note that the client may retrieve DCs not in his site depending on automatic site coverage (after a DC was offline or newly joined, the site created without an DC and the DC moved in there later and the informations not cleaned up in DNS).
Just IMHO Ulf -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Almeida Pinto, Jorge de Sent: Thursday, January 26, 2006 8:50 PM To: [email protected]; [email protected] Subject: RE: [ActiveDir] DC II Clients and servers will always try to use a DC in their own site. The query for that will be: _ldap._tcp.<SITE>._sites.dc._msdcs.<domain>.<tld> In the case the DCs that registered that record (in the actual site or in another covering that site) are not available the client will query for a DC in the domain.The query for that will be: _ldap._tcp.dc._msdcs.<domain>.<tld> Cheers, Jorge ________________________________ From: [EMAIL PROTECTED] on behalf of Figueroa, Johnny Sent: Thu 2006-01-26 20:32 To: [email protected] Subject: [ActiveDir] DC II We are in the process of coming up with a 2nd Data Center for DR. I am working on the AD part of it and I am trying to find out what the process is for finding a DC in DC II of DC I is down. I looked at some of the Domain Locator articles and it talks about how a client finds a DC and what happens if the DC that it contacts is not in its site, etc, etc. What I don't see is what happens if the DC I site is down?... How could it find DC II, is that all part of the site cost?. It has been a while and I am confused, is Site Costs used to find DCs or just for replication? Any articles or explanations are appreciated. Thanks Johnny Figueroa Enterprise Network Consultant/Integrator Network Services Banner Health Voice (602) 495-4195 Fax (602) 495-4406 WARNING: This message, and any attachments, are intended only for the use of the individual or entity to which it is addressed and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient or employee/agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of the communication is strictly prohibited. If you receive this communication in error, please notify us immediately List info : http://www.activedir.org/List.aspx List FAQ : http://www.activedir.org/ListFAQ.aspx List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/ This e-mail and any attachment is for authorised use by the intended recipient(s) only. It may contain proprietary material, confidential information and/or be subject to legal privilege. It should not be copied, disclosed to, retained or used by, any other party. If you are not an intended recipient then please promptly delete this e-mail and any attachment and all copies and inform the sender. Thank you. List info : http://www.activedir.org/List.aspx List FAQ : http://www.activedir.org/ListFAQ.aspx List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/.activedir.org/ List info : http://www.activedir.org/List.aspx List FAQ : http://www.activedir.org/ListFAQ.aspx List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/
