On Tue, Nov 10, 2009 at 2:28 AM, KyuMin Choi <qmi...@gmail.com> wrote: > Hello ~ can anyone answer me below questions ? > > # The server is RHEL5.4
This should be a bind-9.3.2 server but may be different due to local updates. The bind version will be more important. > 1. What is the timeout value if a forwarders server specified in > > named.conf is down and how many retry > does it do ? The forwarding code in bind-9.3 uses RTT I believe. This would then be more about how many forwarders there are. If there are multiple then the code uses a clock to figure out which ones are the fastest and tries to use those first and slow ones later. If there is only one I am not sure what happens without looking at the code. A poor guess on my part would be that it uses the old 3 tries (1 sec, 3 sec 6 sec?) method. > > 2. If the client makes a query for same FQDN for the second times after > the forwarders server has comes back online, > does this query give up and does not bother asking the forwarders server > as the first query to the forwarders server previoursly timed out ? I would guess it would depend on the number of forwarding servers in the list. My guess is that if there are multiple ones (say A, B, and C) and A doesn't answer during the testing period.. it would be the last one tried in any future attempts. If there is only one.. I would guess it would try again. > > _______________________________________________ > bind-users mailing list > bind-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/bind-users > -- Stephen J Smoogen. Ah, but a man's reach should exceed his grasp. Or what's a heaven for? -- Robert Browning _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
