Zone reload time after NOTIFY

Ken Eddings eddingsk at
Tue May 23 23:10:35 UTC 2006

At 2:58 PM -0700 5/23/06, Scott, Casey wrote:
> > -----Original Message-----
>> From: bind-users-bounce at
>> [mailto:bind-users-bounce at] On Behalf Of Barry Margolin
>> Sent: Tuesday, May 23, 2006 1:58 PM
>> To: comp-protocols-dns-bind at
>> Subject: Re: Zone reload time after NOTIFY
>> In article <e4vk94$48s$1 at>,
>>  "Scott, Casey" <Casey.Scott at> wrote:
>> > I have a BIND machine configured as a secondary server with 1 zone.
>> > The zone can receive many DDNS update from Windows clients.
>> The DDNS
>> > updates occur on the primary server, which is Windows 2003. My
>> > question is that although the primary DNS server sends
>> NOTIFY's to the
>> > BIND server, the BIND server takes quite a while before it
>> implements any of the changes.
>> > I can not find any BIND config option that will effect the
>> > responsiveness of BIND to NOTIFY's. I don't want to force BIND to
>> > reload the zone for every NOTIFY, but I would like to have some
>> > control over the amount of time taken to implement the
>> changes in the zone.
>> What is "quite a while"?  BIND waits a random amount of time,
>> to avoid a thundering herd problem if all the slaves tried to
>> transfer immediately. 
>> But this shouldn't be much more than a minute, I think.
>> --
>> Barry Margolin, barmar at
>> Arlington, MA
>> *** PLEASE post questions in newsgroups, not directly to me ***
>> *** PLEASE don't copy me on replies, I'll read them in the group ***
>Its been between 15-30 minutes each time. BIND is installed from RPM,
>running on a RHEL 4 machine.

Have you verified that the NOTIFY is being received on the slaves?  Sound's like they're not getting through and normal refresh cycle is taking care of the updates.

Ken Eddings, Hostmaster, IS&T,   eddingsk at,   eddingsk at
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