Take a look at an article written by Marcus -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Figueroa, Johnny Sent: Friday, September 30, 2005 10:35 To: ActiveDir@mail.activedir.org Subject: [ActiveDir] DNS Aging and Scavenging
I am seeing more duplicate PTR records in our DNS reverse zones than I'd like. Our DHCP lease is 8 days, the zones are AD integrated. I've been down the DNSUpdateProxy group road, etc. So I believe the records are duplicates because they are not scavenged in time, not because of security rights to update the record or delete it. Our scavenging per zone is set to 7 days for the no-refresh interval and 7 days for the refresh interval. I went by the formula that the refresh interval should be 87.5% of the lease time, I'm just not sure about the "no-refresh" interval. I found this paragraph in a support document that I don't understand: "After the record is refreshed, it cannot be refreshed again for the interval specified by the no-refresh interval. The no-refresh interval, a zone parameter, prevents unnecessary Active Directory replication traffic. However, the record can still be updated during the no-refresh interval. If a dynamic update request requires modification to a record, the request is considered an update. If the request requires no modifications, it is considered a refresh. Therefore, prerequisite-only updates, updates that include a list of prerequisites but no zone changes, are also considered refreshes. " If the goal is to get rid of addresses as soon as they are truly stale, then that would be right after the lease expires? In my scenario, should the "no-refresh" interval be (1) and the refresh (7)?. In a 2003 AD/DNS environment, how much replication traffic is this going to be? 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/
