[nsd-users] Downstream plus upstream zone transfer

Rubens Kuhl rubensk at nic.br
Sun Nov 30 18:29:52 UTC 2014

> On Nov 30, 2014, at 3:51 PM, Ask Bjørn Hansen <ask at develooper.com> wrote:
> It sounds like you have a problem or concern that you didn't describe.

Indeed, but I'm trying not to categorise something as a problem before knowing what the expected outcome was. 

> If you have frequent transfers of large zones (maybe to slow slaves or from a slow master?) you'll be better off having the intermediary "transfer hub" run something that can serve IXFR transfers. Bind works well for this, even if the upstream can't do IXFRs.
> Then the downstream hosts will just get a small update to apply.
> Ask

Upstream can do IXFR, and the fetch process from upstream uses IXFR for 99.9% of times (AXFR is forced every few days). 
Downstream slave is the one forcing AXFR. 


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