does type forward zones make BIND 8 continuously poll?

Anthony Golia Anthony.Golia at morganstanley.com
Fri Dec 7 21:29:25 UTC 2001


Cricket Liu wrote:
> 
> > I mean if I do this:
> >
> > zone "foo.com" {
> >         type forward;
> >         forward only;
> >         forwarders {
> >                 10.10.10.10;
> >                 192.168.1.1;
> >         };
> > };
> >
> > and things happen in this order:
> >
> > -     192.168.1.1 is down
> > -     BIND comes up, requests for foo.com come in, BIND frwrds them to
> > 10.10.10.10
> > -     10.10.10.10 goes down, 192.168.1.1 comes up, requests come in
> >
> > how often does BIND send SOA queies for it's RTT calcs?  any help is
> > appreciated.
> 
> BIND doesn't send SOA queries to compute RTT values.  It only
> queries the forwarders when it has a recursive query to reply
> to and updates RTT based on the responses.
> 
> Also, note that tracking RTT for forwarders doesn't work
> correctly in BIND 8 until 8.2.3, and isn't supported in BIND 9
> at all.

Thanks.  How does BIND 9 do it?

> 
> cricket
> 
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> 
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-- 
Anthony


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