p.mayers at imperial.ac.uk
Fri Mar 9 09:13:17 UTC 2012
On 03/08/2012 06:26 PM, michoski wrote:
> Meant to add one thing... In our configuration, we actually have two
> recursive VIPs per site, and even considered three (internal IPs are cheap).
We do this.
We also make the two different VIPs use different underlying tech - one
is an anycast route advertised with eBGP, the other is via
load-balancing. The diversity of tech gives us a bit more resilience and
flexibility - taking out the load-balancer no longer destroys DNS, for
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