> Vedrin Jeliazkov wrote on 02/16/2011 02:48 PM:
> > Hi Andreas,
> >
> > Great news!
> >
> > In case that you have full control of your master DNS zone files and
> > you would like to speed-up the DNS synchronisation, you could consider
> > temporarily lowering the Refresh time setting in your SOA record from
> > the RFC-recommended value (~ 86400 -- 24h) to something more
> > aggressive like 3600 (1 hour) on Thursday (Feb 24) at the latest (the
> > refresh setting will also need time to propagate, which in the worst
> > case would be as long as its current refresh value, so if it is
> > anything higher than 86400, you should implement the change even
> > earlier). Also, don't forget to change the zone serial number and to
> > restore the old refresh value once the hang-over is completed and
> > changes are propagated (e.g. on Sunday, 27 Feb). This should help
> > reducing the number of inadvertently lost policies, by reducing the
> > window of opportunity to 1 hour in the worst case.
> 
> @Christoph: is it possible to configure such timings while we are moving?
TTL is at 300 to make switches fast (5 minutes).

Christoph