[CentOS] High Availability using 2 sites -- yep, "propogation."
Les Mikesell
lesmikesell at gmail.com
Thu Jan 5 18:51:57 UTC 2006
On Thu, 2006-01-05 at 12:18, Bryan J. Smith wrote:
> Exactomundo. Even Google has to accomodate such. That's why
> their model is piecemeal and localizes as much as they can.
>
> But even Google has an ASN, AS15169, when it comes to their
> combined presence.
I think they know better than to try to flap BGP routing
around to accomodate a failed computer at one site or
another, though. Is that what you are suggesting?
BGP would normally be used to handle routing over multiple
paths to a fixed location and would change in response to
the route availability. You can play tricks by shuffling
a route to a completely new destination if a whole site fails
but the minimum you could move would be a whole class
C at a time, and some bad things will happen during the
switch as different machines with the old IP's become visible.
--
Les Mikesell
lesmikesell at gmail.com
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