On Mon, 16 Jul 2012 21:31:42 -0700, Owen DeLong said: > Think HA pairs in Pittsburgh, Dallas, and San Jose. > > Now imagine each has different upstream connectivity and the backbone > network connecting all the corporate sites lives inside those firewalls. > > The real solution to this is to move the backbone outside of the firewalls > and connect the internal networks via VPNS that ride the external backbone > and can be routed over the internet safely when a backbone link fails.
Wouldn't this be even easier if you gave each machine involved multiple addresses, one ULA and one external? This isn't IPv4 anymore, you can stick multiple addresses on an interface. :)
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