I am sooo confused...

[Kevin Darcy]

Len Conrad wrote:

> >Len Conrad <LConrad at Go2France.com> wrote in message
> >news:<aas88s$ag9$1 at isrv4.isc.org>...
> > > >********* db.westwood.st.mycompany.com *********
> > > >$TTL    3h
> > > >westwood.st.mycompany.com. IN SOA       westwood.st.mycompany.com. (
> > > >         2002050210      ; Serial
> > > >         3h              ; Refresh
> > > >         1h              ; Retry
> > > >         2w              ; Expire
> > > >         1h )            ; Negative caching
> > > >
> > > >; Name Servers
> > > >westwood.st.mycompany.com. IN NS        westwood.st.mycompany.com.
> > >
> > > you need 2 NS's here.
> >
> >Can you tell me why I need two NS's here?  Does this mean I need to
> >run two DNS servers?
>
> technically, one will work.  2 or more is conventional for reliability
> through redundancy.

Actually, it's *required*:


> A given zone will be available from several name servers to insure its
> availability in spite of host or communication link failure.  By
> administrative fiat, we require every zone to be available on at least
> two servers, and many zones have more redundancy than that.
>

(RFC 1034, Section 4.1)

If you don't comply, the RFC stormtroopers will be showing up at your doorstep.

                                                        - Kevin