Zone reload time after NOTIFY

Ken Eddings eddingsk at apple.com
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 isc.org
>> [mailto:bind-users-bounce at isc.org] On Behalf Of Barry Margolin
>> Sent: Tuesday, May 23, 2006 1:58 PM
>> To: comp-protocols-dns-bind at isc.org
>> Subject: Re: Zone reload time after NOTIFY
>>
>> In article <e4vk94$48s$1 at sf1.isc.org>,
>>  "Scott, Casey" <Casey.Scott at wizards.com> 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 alum.mit.edu
>> 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,
>and
>running on a RHEL 4 machine.
>
>Thanks,
>Casey

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 apple.com,   eddingsk at mac.com
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