[ntp:questions] http://www.ntp.org/ => a blank page?

Martin Burnicki martin.burnicki at meinberg.de
Tue Mar 10 09:02:10 UTC 2009


Rob wrote:
> Martin Burnicki <martin.burnicki at meinberg.de> wrote:
>> IMHO DNS is not like NTP in the sense that is just *starts* sending
>> queries for domains which have not yet been resolved to the root DNS
>> servers and then are redirected/go on down to the authoritative DNS for
>> that domain, whereas NTP would stuck with the top level servers if they
>> have been configured.
>>
>> However, if several local subnets needed to resolve "microsoft.com" then
>> each one would have to ask the root servers the first time.
>>
>> If you send DNS queries to your ISP's servers then this would save
>> bandwidth since they are normally closer to your network than the root
>> DNS servers,
> 
> Also don't forget that it will save time too, when you are on a connection
> with some roundtriptime.
> 
> When you use the ISP forwarder, you make a single request to the
> forwarder, which will make the multiple requests required to do the
> lookup, presumably
> over a faster connection than you have yourself.  It will then send a
> single reply with the results.
> 
> When you go to the root server yourself, you have to do multiple queries
> over the slower connection, which takes more time.

Agreed, this is also a good point.

Martin
-- 
Martin Burnicki

Meinberg Funkuhren
Bad Pyrmont
Germany




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