[TriLUG] Re: DNS lookup of Linux server fails intermittently (was: (no subject))

[Geoffrey Douglas Purdy]

Jeremy,
I'll bet you're right!  I remember seeing several nameservers listed on
the W2K server.  I don't have Administrator access to change this on the
W2K servers, but we'll give it a try on Mon. and report back to the list
on whether it solves our problem.

-Geoff

> > -----Original Message-----
> > From: Jeremy P [mailto:jeremyp at pobox.com]
> > Sent: Friday, November 30, 2001 6:21 PM
> > To: trilug at trilug.org
> > Subject: Re: [TriLUG] (no subject)
> >
> >
> > On Fri, 30 Nov 2001, Jeremy P wrote:
> >
> > > In any OS, the list of nameservers (either from DHCP or statically
> > > configured)  is intended to be a "round robin" list -- ie
> > "if one server
> > > is down, or slow, try another".  It's not a concatenated list -- it
> > > doesn't do "if one server doesn't have the answer, try the other".
> >
> > I should clarify...
> >
> > A better way to describe the list of nameservers is "chained
> > with logical
> > OR".  (Round Robin has a different specific meaning in DNS.)
> > Most OS's
> > including Windows 9x will use the first nameserver OR the
> > second OR the
> > third, stopping when the first one gives an answer.  That
> > answer could be
> > "host not found."  Apparently W2K doesn't always start at the
> > first one in
> > that list[1], and since only the first DNS server lists your
> > Linux box's
> > IP, you get "host not found" errors.
> >
> > To clarify my previous message, all of the servers in the
> > list should have
> > functionally identical configuration -- they should all list all
> > records.  In other words, use only internal servers, and configure the
> > internal servers to forward to external servers if necessary.
> >
> > --Jeremy
> >
> > [1] Perhaps it does this as a lame attempt at "load
> > balancing" the queries
> > to the DNS servers?
> >
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>