negative caching time and TTLs

[Matus UHLAR - fantomas]

On 14.04.09 14:22, Lena M wrote:
> Which TTL value is supposed to be used for negative caching time?

the one from SOA, apparently overriden by local max-ncache-ttl setting.

> -We are running BIND 9.X as a caching server. We are seeing that NXDOMAIN replies are being cached using $TTL time of a given zone instead of its SOA min TTL time. 

What are those two?
Note that there's no "min TTL" time, the value called "minimum" should not
be uused that way anymore

> -Is $TTL suppose to override SOA's min TTL for the negative caching?  RFC 2308 is not clear.

I think RFC 2181 (which 2308 refers to) is clear enough.

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