Least expensive, most robust infrastructure

[Kevin Darcy]

carcarx at hotmail.com wrote:
> We're seeking to build a DNS infrastructure that will
> provide DNS service within a remote location that could be
> out of touch with our central DNS servers for as much as 2 days.
>
> Since DNS caches won't override existing TTLs, this suggests
> having a fully zone populated slave server at the remote site.
>
> Does anyone have alternate suggestions?
>   
No, I don't really have an alternate suggestion. "Stealth" slaving (i.e. 
where the slave is not published in the NS records of the zone) works 
fine, and we use it extensively. As long as you run a relatively-modern 
version of BIND that supports IXFR, the replication bandwidth isn't even 
that high.

I assume, of course, that you're only talking about slaving your own 
internal zones. Trying to slave significant chunks of the Internet DNS 
isn't very manageable...

                                                                         
                                 - Kevin