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. _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
