In article <mailman.193.1367213994.20661.bind-us...@lists.isc.org>, Chris Buxton <cli...@buxtonfamily.us> wrote:
> On Apr 27, 2013, at 5:52 AM, Matus UHLAR - fantomas wrote: > > > On 27.04.13 01:03, Kevin Morgan wrote: > >> Does it use an algorithm to determine the best server to use or does > >> it try the masters in the order they are listed? I am wondering if > >> listing the masters in a different order can optimize the performance > >> of bind. > > > > AFAIK: > > BIND keeps track of servers accessible and their RTT. It tends to prefer > > theone with shoertet RTT but ocasionally re-tries (RTT can change over > > time. If notice comes, BIND tends to prefer server that has sent it. > > If you're talking masters, as in the BIND server is a slave refreshing from > its masters, then I don't believe that's correct. I believe it compares the > serial numbers retrieved from each and prefers the one with the highest > value. But if all of them have the same serial (and they're all higher than the local value, of course), how does it decide which one to transfer from? -- Barry Margolin Arlington, MA _______________________________________________ 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
