In message <4f394e27.7050...@gmail.com>, pch0317 writes: > Dear list, > > I would like to know in which maximum period of time new value of > Resource Record (RR) on the DNS server will be propagated via network to > client. > > For example client "D" requests for RR to cache server "C", cache server > "C" sends request for RR to cache "B" server and "B" cache server > requests for RR to server "A" (like in the picture bellow). On the > server "A" TTL parameter for RR is set to 5 minutes. > > (DNS server "A") -> (cache server "B") -> (cache server "C") -> (client "D") > > I think that the maximum period of time is 15 minutes because when "B" > is cache RR nearly 5 min server "C" may then send request to server B. > And when 5 minutes pass "D" will send request to server "C". > > Can you tell me if I am right in this case?
TTL's in caches count down so the answer is 5 minutes. > Best regards, > _______________________________________________ > Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe > from this list > > bind-users mailing list > bind-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/bind-users -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users