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

Alexandre DERUMIER aderumier at odiso.com
Fri Mar 8 19:29:31 CET 2013


>>@alexandre: what switch model do you use? 

production: cisco 6500 WS-X6548 modules

test : cisco 2960g

Both have igmp snooping manually disabled.  



Note that my main problem was that, when shutting down a node of the cluster, after 2 min, all nodes linux bridges blocked the multicast traffic.



Now, I see that old kernels (include redhat), send igmp queries by default when igmp snooping module is enabled
This behaviour have change last year, 
http://patchwork.ozlabs.org/patch/152295/

Because it can conflict with igmp of physical switchs




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

De: "Dietmar Maurer" <dietmar at proxmox.com> 
À: "Michael Rasmussen" <mir at datanom.net>, pve-devel at pve.proxmox.com 
Envoyé: Vendredi 8 Mars 2013 18:51:33 
Objet: Re: [pve-devel] corosync, multicast problem because of vmbr multicast_snooping enabled 

> > But Indeed, that's not an easy update,i'm not sure it's possible to push it by 
> default to next kernel. 
> > 
> You are certain that it is not your switch which is causing problems? 

@alexandre: what switch model do you use? 

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