Setting up a Root name server

[Edmund]

And it reminds me of an ariticle saying root name server answering thousands
of queries per second.  If it do recursion, it has to be a super-computer.

chris wrote:

> The root servers only return the list of name servers that are authoritative for the
> domain requested. They, them selves will not recurse. I think we all get this point.
> It would be way to much of a task for the root nameservers to go hunting down
> information them selves. If you have nslookup ask a root nameserver to resolve
> foo.bar.com it's going to perform the recursion it self. It might look like the root
> server actually answered what foo is pointed to .. but it didn't, nslookup did all
> the work.
>
> - Chris
>
> Michael Voight wrote:
>
> > I am not wrong, the wording was wrong. I meant they do not do recursion.
> > (I actually meant to say the do not give a recursive response)
> >
> > Michael
> >
> > marka at isc.org wrote:
> > >
> > >         Michael *both* you and chris are wrong as root servers do not
> > >         "not respond" based on the setting of recursion desired.
> > >
> > >         Whether you get an answer to the question asked or a referral
> > >         is another question altogether and depends upon the question asked
> > >         and what is currently being served.  But in either case you do
> > >         get a response.
> > >
> > >         Mark
> > > >
> > > > Corrrect, my wording was incorrect.
> > > >
> > > > I meant " Did you do nslookup in NON RECURSIVE mode?? Root servers do
> > > > not
> > > > respond with recursive queries"
> > > >
> > > > And, yes, I do this for a living.
> > > >
> > > > Michael
> > > >
> > > > Mark_Andrews at isc.org wrote:
> > > > >
> > > > >         While the root servers are set up not to recurse the *do* answer
> > > > >         recursive queries with referrals.  Proof by example.
> > > > >
> > > > >         Mark
> > > > >
> > > > > ; <<>> DiG 8.2 <<>> non-existant.csiro.au @a.root-servers.net
> > > > > ; (1 server found)
> > > > > ;; res options: init recurs defnam dnsrch
> > > > > ;; got answer:
> > > > > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10
> > > > > ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 7, ADDITIONAL: 10
> > > > > ;; QUERY SECTION:
> > > > > ;;      non-existant.csiro.au, type = A, class = IN
> > > > >
> > > > > ;; AUTHORITY SECTION:
> > > > > AU.                     2D IN NS        NS2.BERKELEY.EDU.
> > > > > AU.                     2D IN NS        MULGA.CS.MU.OZ.AU.
> > > > > AU.                     2D IN NS        MUNNARI.OZ.AU.
> > > > > AU.                     2D IN NS        NS.EU.NET.
> > > > > AU.                     2D IN NS        NS1.BERKELEY.EDU.
> > > > > AU.                     2D IN NS        NS.UU.NET.
> > > > > AU.                     2D IN NS        VANGOGH.CS.BERKELEY.EDU.
> > > > >
> > > > > ;; ADDITIONAL SECTION:
> > > > > NS2.BERKELEY.EDU.       2D IN A         128.32.136.12
> > > > > NS2.BERKELEY.EDU.       2D IN A         128.32.206.12
> > > > > MULGA.CS.MU.OZ.AU.      2D IN A         128.250.1.22
> > > > > MULGA.CS.MU.OZ.AU.      2D IN A         128.250.37.150
> > > > > MUNNARI.OZ.AU.          2D IN A         128.250.1.21
> > > > > NS.EU.NET.              2D IN A         192.16.202.11
> > > > > NS1.BERKELEY.EDU.       2D IN A         128.32.136.9
> > > > > NS1.BERKELEY.EDU.       2D IN A         128.32.206.9
> > > > > NS.UU.NET.              2D IN A         137.39.1.3
> > > > > VANGOGH.CS.BERKELEY.EDU.  2D IN A  128.32.33.5
> > > > >
> > > > > ;; Total query time: 604 msec
> > > > > ;; FROM: bsdi.dv.isc.org to SERVER: a.root-servers.net  198.41.0.4
> > > > > ;; WHEN: Sat Sep  4 11:36:46 1999
> > > > > ;; MSG SIZE  sent: 39  rcvd: 368
> > > > >
> > > > > >
> > > > > > Michael Voight wrote:
> > > > > >
> > > > > > >
> > > > > > >
> > > > > > > Duh.... Did you do nslookup in NON RECURSIVE mode?? Root servers do not
> > > > > > > respond to non-recursive queries  AFAIK.
> > > > > > >
> > > > > >
> > > > > > Ugh, root servers do not recurs. root nameservers only respond to non-rec
> > > > ursi
> > > > > > ve
> > > > > > queries.. I hope you don't do this for a living...
> > > > > >
> > > > > >
> > > > > >
> > > > > --
> > > > > Mark Andrews, Internet Software Consortium
> > > > > 1 Seymour St., Dundas Valley, NSW 2117, Australia
> > > > > PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org
> > > >
> > > --
> > > Mark Andrews, Internet Software Consortium
> > > 1 Seymour St., Dundas Valley, NSW 2117, Australia
> > > PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org