> > Michael Monnerie wrote: > > > We are having 2 sites at different locations now with a DNS resolver on > > > each site. Internet speed between those two different ISPs is very fast, > > > and the hosts to resolve will be about the same because of similar > > > services. > > > > > > My idea is to use > > > forward X; > > > on site Y and > > > forward Y; > > > on site X, but, as I couldn't find it in the documents, I believe this > > > could lead to a resolver loop between X and Y and therefore even slower > > > resolution. Or is BIND clever enough to only ask the other server once?
On 11.08.09 11:13, Mark Andrews wrote: > The forwarding concept was developed when 48k external links > were *FAST* links and having everyone on a campus use one > or two machine as a super cache provided some real benefit. > > It still provides some benefit if you are dialing up over > the PSTN. However if you are using Cable/DSL or similar > technologies there is little benefit and huge negative > consequences in the case of the forwarder being down. We have small farm with more servers behind L3 switch, everything connected using 2 links... so I think this way of forwarding could help us a bit especially for domains with servers behind slow links... > Cross connecting caches is not part of the design strategy > and will not work well. It would take code changes to make > it work well. ... but it would require some tuning of forwarding code e.g. to set up maximum timeout for a forwarding server and to allow sending of non-recursive queries to a forwarding server. I think it would be interesting to know if this behaviour could bring us some benefits but apparently nobody's going to code this... -- Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. Linux is like a teepee: no Windows, no Gates and an apache inside... _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users