forcing TTL value

[Vincent Duquesne]

and an other thing, with boomerang it is synchronous mode ! So it is good
for one, two, five site but it is hard to do that with more ! If you have 10
sites and 20 request : you have to make 200 request in the same time.... I
don't know...

-----Message d'origine-----
De : Marc Thach Xuan Ky [mailto:marc.thach at tesco.net]
Envoyé : mercredi 9 janvier 2002 12:14
À : Vincent Duquesne; bind-users at isc.org
Objet : Re: forcing TTL value


Vincent,
Why do you want to design this when you can buy it?  This sounds very much
like
what Cisco offer with their Boomerang product.  Boomerang sends multiple
synchronised DNS responses each with a different A record, one from each
location.  The first response wins.  BTW this is not a recommendation, if
you
ask me it's completely nuts, but it may be useful in specific cases.
rgds
Marc TXK


Vincent Duquesne wrote:

> In fact it is based on Rond trip time request of DNS client to DNS servers
> which are present on each site...
>
> -----Message d'origine-----
> De : bind-users-bounce at isc.org [mailto:bind-users-bounce at isc.org]De la
> part de phn at icke-reklam.ipsec.nu
> Envoyé : mardi 8 janvier 2002 22:32
> À : comp-protocols-dns-bind at moderators.isc.org
> Objet : Re: forcing TTL value
>
> Vincent Duquesne <v.duquesne at silicomp.fr> wrote:
>
> > thanks barry,
>
> > in fact, it is to design a CDN solution based on DNS TTL (very short to
be
> > sure that each time DNS request will be made).
>
> Seems to be an inherently broken design.
> What will the app do whenever a "temporary error" occurs ?
>
> > Vincent
>
> > -----Message d'origine-----
> > De : bind-users-bounce at isc.org [mailto:bind-users-bounce at isc.org]De la
> > part de Barry Margolin
> > Envoyé : mardi 8 janvier 2002 18:33
> > À : comp-protocols-dns-bind at moderators.isc.org
> > Objet : Re: forcing TTL value
>
> > In article <a1f6k0$jl3 at pub3.rc.vix.com>,
> > Vincent Duquesne <v.duquesne at silicomp.fr> wrote:
> >>is it possible to force TTL value of records that we received from
others
> >>servers ?
>
> > No.  You can configure a maximum TTL, so anything longer than that will
be
> > reduced to this time.  But you can't force a larger TTL than what you
> > receive.
>
> > What are you trying to do that you think requires forcing a particular
> TTL?
>
> > --
> > Barry Margolin, barmar at genuity.net
> > Genuity, Woburn, MA
> > *** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to
> newsgroups.
> > Please DON'T copy followups to me -- I'll assume it wasn't posted to the
> > group.
>
> --
> Peter Håkanson
>         IPSec  Sverige      (At the Riverside of Gothenburg, home of
Volvo)
>            Sorry about my e-mail address, but i'm trying to keep spam out.
>            Remove "icke-reklam" and it works.