BIND 8 with DYNUPDATE capabilities
Johnny Fribert Lauridsen
jlaurids at cisco.com
Wed Mar 1 20:06:57 UTC 2000
well-known problem. Is anyone other than Microsoft trying to do something about
this problem with DNS. Maybe it has not been such a hot problem up till now,
but with Win2000 and DDNS, it IS a problem with the single-primary....
Has Microsoft proposed multimaster DNS to IETF?
At 00:01 01/03/2000 +0000, Jim Reid wrote:
> >>>>> "Jeff" == Wilde, Jeff <Jeff.Wilde at westgroup.com> writes:
> Jeff> I know that windows 2000's dns it is integrated into the
> Jeff> active directory so that you can basically have two primary
> Jeff> name servers and replications is always taking place because
> Jeff> of the AD. If one name server fails, the other name server
> Jeff> will automaticaly keep on receiving dynamic updates and the
> Jeff> replications will take place once the failed server comes
> Jeff> back into service. I currently have bind 8 set up as a
> Jeff> master/slave configuration. If my master was to fail, the
> Jeff> dynamic updates wouldn't be handled by my slave the way I
> Jeff> have it configured. Is there a way to have either
> Jeff> a) two primary servers that replicate zones to each other
>No. A master name server - primary is OLD jargon - is the definitive
>source of DNS data for some zone. By definition it has nowhere else to
>get that information other than from the zone file (or equivalent)
>that it loads. If the server is master for some zone, it knows that
>by implication nothing else should be master for that zone too.
> Jeff> b) have master/slave setup with the higher soa value being
> Jeff> replicated to the other server.
>No. A name server that is master for some zone will NEVER EVER
>"replicate" that zone by retrieving a copy of the zone from some slave
>server. See the answer to your previous question.
>W2K has its own replication protocol for Active Directory and for
>ensuring that its multiple master name servers keep in sync with each
>other. IIUC this protocol is proprietary to Microsoft.
> Jeff> My other question is, is there a timeout on the dynamic
> Jeff> updates to cancel old stale data?
>No. How can the name server tell what data is old and what isn't? The
>responsibility for removing stale data from the zone rests with
>whatever put it there: a DHCP server, hostmaster, etc.
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