how does Bind choose which master to xfer from?

Mark.Andrews at nominum.com Mark.Andrews at nominum.com
Mon Jun 5 13:07:56 UTC 2000


> Thanks.
> 
> Do you happen to know what it'll do if all the serial no.s are the same?

	It will set the modification time on the zone file to the current
	time, mark the internal copy of the zone file as updated at the
	current time and set timer to go off is ~refresh seconds.

	Mark
> 
> On Sat, 3 Jun 2000 Mark.Andrews at nominum.com wrote:
> 
> > 
> > > Hi.
> > > 
> > > if I have:
> > > 
> > > zone "foo.com" {
> > >         type slave;
> > >         file "data/db.foo";
> > >         masters {
> > >                 10.1.1.1;
> > >                 172.17.1.1;
> > >         };
> > > };
> > > 
> > > which master will my secondary do the xfer from?  And does the order I
> > > list the masters matter?  I think I remember (from reading the code)
> > > that it'll do an SOA query to all masters listed and do the xfer from
> > > the one with the least RTT.  Is this true?  If so, is there a way to
> > > control this behviour:  i.e. I want my slave to always do (or try) an
> > > xfer from the first master listed even if its RTT is greater.
> > > 
> > > As always, any help is appreciated.
> > > 
> > > -- 
> > > Anthony
> > > 
> > > 
> > 	It will query all masters in order.  When it finds one with a newer
> > 	version of the zone than the slave currently has it start a zone
> > 	transfer.
> > 
> > 	Mark
> > --
> > Mark Andrews, Nominum Inc.
> > 1 Seymour St., Dundas Valley, NSW 2117, Australia
> > PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at nominum.com
> > 
> > 
> > 
> 
> Anthony
> 
--
Mark Andrews, Nominum Inc.
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at nominum.com



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