> It's the root server's order and the querying server's handling that
> matter.

Absolutely  not.  It  is  ONLY  the  querying recursor's handling that
matters,  for it is that recursor that is talking to the authoritative
NSs, and it makes a more "locally intelligent" choice than you think.

> ...  the order is fixed when it comes back from the root servers and
> is likely to be used that way...

Wrong. Google "order multiple nameservers," geez.

> The  client  then  goes  directly  to the first NS server listed and
> requests  the  appropriate  records,  but most applications/systems,
> such as Windows with some Web browser, will fail-over to the next NS
> in  line  if  the  query  times  out,  and  the server that they are
> querying  should  also  fail  over, or at least negatively cache the
> unresponsive server so that it isn't repeatedly hit.

You're  mixing up client resolver "primary/secondary DNS" and recursor
"primary/secondary NS" -- one of which exists, the other doesn't.

--Sandy


------------------------------------
Sanford Whiteman, Chief Technologist
Broadleaf Systems, a division of
Cypress Integrated Systems, Inc.
e-mail: [EMAIL PROTECTED]

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