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On Tue, 11 Jan 2000, Ray Bellis wrote:
> On Mon, 10 Jan 2000, Joseph Mack wrote:
>
> > What does "pretend" mean?
>
> I mean that the VIP is assigned from the same subnet as the RIPs but isn't
> physically present on the LAN segment, only in the loopback interfaces of
> every box (including the directors).
So all machines have the VIP on lo (lo:0)? Why do you say that this IP
isn't present on the LAN?
> > So you have redundant LVS's (=director+realservers) or an LVS with
> > redundant directors? My understading of OSPF is pretty thin - how does
> > it handle a failed director? How do you move the VIP from one director
> > to another?
>
> We have redundant directors. We don't move the VIP from one director to
> another, it's permanently configured in both directors. External packets
> only arrive at a director if that director is the current preferred OSPF
> route into the LVS. If the primary director fails OSPF makes the other
> director automatically become the preferred router instead, and it all
> keeps on working.
so director failover is automatic?
How do you set up and run the router with the same IP attached twice?
How does the router detect director failure?
Thanks
Joe
--
Joseph Mack mack@xxxxxxxxxxx
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