[pve-devel] corosync, multicast problem because of vmbr multicast_snooping enabled

Alexandre DERUMIER aderumier at odiso.com
Fri Mar 8 18:34:13 CET 2013

Dietmar : 

Does Martin have updated all nodes of a cluster ?
If not, it's possible that physical switch (with igmp snooping) allow only traffic between non-updated nodes with linux bridge with igmp snooping enabled and block other nodes.
But In the case, the multicast traffic should works between non updated nodes.

----- Mail original ----- 

De: "Dietmar Maurer" <dietmar at proxmox.com> 
À: "Alexandre DERUMIER" <aderumier at odiso.com> 
Cc: pve-devel at pve.proxmox.com 
Envoyé: Vendredi 8 Mars 2013 16:58:03 
Objet: RE: [pve-devel] corosync, multicast problem because of vmbr multicast_snooping enabled 

> What is your problem exactly ? 

Martin updated 2 clusters, and now I get strange TOTEM error - corosync does not work. 

Mar 8 14:30:23 hp1 corosync[1588]: [TOTEM ] Totem is unable to form a cluster because of an operating system or network fault. The most common cause of this message is that the local firewall is configured improperly. 

> Note that I think you need to disable igmp snooping on all nodes at the same 
> time, 
> because it's possible that nodes with igmp snooping enabled won't see the nodes 
> with igmp snooping disabled. 

multicast also does not work between updated nodes. 

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