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>Content-Class: urn:content-classes:message
>From: "Phil" <(E-Mail Removed)>
>Sender: "Phil" <(E-Mail Removed)>
>Subject: DNS Newb Zone Transfer Question
>Date: Thu, 1 Apr 2004 15:21:50 -0800
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>I have recently inherited all network admin
>responsibilities; this is my first time managing such
>services...
>
>Q: How do the Primary and Secondary DNS servers know to
>do zone transfers with each other? Shouldn't each Zone
>have a NS record listed for each DNS server that is
>authoritative? We only have one listed and I suspect we
>get the following event log warning because there is only
>one listed.
>
>"The DNS server has encountered numerous run-time
>events. These are usually caused by the reception of bad
>or unexpected packets, or from problems with or excessive
>replication traffic. The data is the number of
>suppressed events encountered in the last 15 minute
>interval."
>
>thanks!
>
>
>
Phil,
If notify is enabled on the Primary Zone then anytime a record changes the Primary Zone it will notify all Secondaries to pull the zone transfer. If this
option is not enabled then the Secondary Zone will pull a zone transfer at an interval that is euqal to the TTL on the SOA record for the zone.
"The zone transfer is initiated in one of the following ways:
" The master server sends a notification (RFC 1996) to the secondary server(s) of a change in the zone.
" When the secondary server's DNS service starts or the secondary server's refresh interval has expired (by default it is set to 15 minutes in the
SOA RR), it will query the primary server for the changes."
The section above is from
810733 White Paper: Windows 2000 DNS White Paper
http://support.microsoft.com/?id=810733
The is only one DNS Server that is set as the Start of Autority for a particular zone and this is the server that houses the read/write copy of the zone. This
is the Standard Primary Server for that zone.
You can add the Stardard Secondary server to the "Name Servers" List in the properties of the zone. Once this is added to the Primary zone the change
will be replicated to the Secondary the next time that a zone tranfer is inistiated.
As far as the Event that you are seeing i have included an article below that aslo describes this issue:
198757 DNS Events 5501, 5000, and 9999 Fill Up the Event Log
http://support.microsoft.com/?id=198757
The big questions is, "Are the zone transfers from Primary to Secondary working?"
T.J. Campana [MSFT]
Microsoft EPS Networking
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