timeouts
Jeff Stevens
jstevens at vnet.ibm.com
Mon Oct 11 20:07:48 UTC 2004
I have a question about how long timeouts take for queries...if I test a DNS
server with a first attempt via nslookup to resolve an address, it times out
after 2 seconds (which is the default). If I were to use dig, the default
timeout is 5 seconds. How long does it take the named server to time out?
I have a customer that is confused why his DNS server doesn't always resolve
addresses (it works "the majority" of the time) the first time but does on
subsequent calls (non-authoritative responses, usually) and I suspect it's
related to the number of hops his query is making (e.g. from Britian for a
US address). He says HTTP protocol has no problem resolving with timeouts
compared to nslookup.
I'm trying to understand the reasoning for that...as he complains his DNS
consistently times out when doing queries overseas.
--
Jeffrey Stevens
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