Rob wrote: > Martin Burnicki <[email protected]> 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 _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
