[Linux-cluster] Repeated fencing

Carlos Maiolino cmaiolino at redhat.com
Wed Feb 24 18:38:50 UTC 2010

On Wed, Feb 24, 2010 at 03:53:33PM +0100, Dirk H. Schulz wrote:
> As far as I recall the docs say a switch is needed that is capable
> of IGMP etc. There must be issues with cross cables, if that is
> correct.
> I did not investigate further and took an old cisco 2950 (you can by
> masses of used ones on ebay very cheap) and configured it according
> to docs.
> To avoid the switch being the SPOF you can use 2 3750s with extended
> image, they can use LACP to bond links connected to both of them.
> That gets a bit more expensive then, admittedly, but even those
> should be available on ebay.
> Dirk

I don't know if IGMP is strict necessary, I don't know much about IGMP to be honest, but Is a must switch can work with multicast, it's how the corosync works.please someone corect me if I'm wrong =].


Best Regards

Carlos Eduardo Maiolino
Support engineer
Red Hat - Global Support Services

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