Hi all, It seems to me that a very good number of clustering problems end up being multicast and smart switch related. I know that IGMP snooping and STP are often the cause, and PIM can help solve it. Despite understanding this, though, I can't quite understand exactly *why* IGMP snooping and STP break things. Reading up on them leads me to think that they should cleanly create and handle multicast groups, but this obviously isn't the case. When a switch restarts, shouldn't it send a request to clients asking to resubscribe to multicast groups? When corosync starts, I expect it would also send multicast joins. Sorry if the question is a little vague or odd. I'm trying to get my head around the troubles when, on the surface, the docs seem to make the process of creating/managing multicast quite simple and straight forward. Thanks! -- Digimer E-Mail: digimer@xxxxxxxxxxx AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
