[dns-operations] Too Open (Was: OpenDNS makes your Internet work better

Per Heldal heldal at eml.cc
Fri Jul 14 11:49:38 UTC 2006

I don't follow your reasoning. 

Outages in a distributed environment must be dealt with as any other. A
broken site in an anycast environment should ideally be withdrawn from
the DFZ to avoid "partial outages", but you seem to be arguing that a
partial outage is worse than if the same service is unavailable to
everyone. How come? The operational principle of isolating a broken site
is the same for any distributed service. Should DNS be any different?

Do you have statistics (or calculations) to support the claim that
adding unicast sites improves overall availability and performance in a
setting that already includes multiple sources?

  Per Heldal

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