If one feels brave enough, support for broadcast is back in RHEL 5.4 (if that's what is being used). I have used with very good results, although it is not officially supported. CR. On Wed, 2010-02-24 at 15:38 -0300, Carlos Maiolino wrote: > 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 =]. > -- Cleber Rosa Solutions Architect - Red Hat, Inc. Mobile: +55 61 9185.3454 -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster