>>@alexandre: What precise Cisco switch do you see the problems with? >>What IOS version? Are there any firmware upgrade available?
cisco 2960g && cisco 6500. (can't remember ios version but version of 2012 for both) My biggest problem was 2 week ago, I shutdown 1 of my nodes, and after 2min, alls nodes on the same vlan (including differents cluster with differents multicast address) can't see each others. disabling igmp on linux bridge has resolved the problem. So it should be related to snooping & igmp queries, but I don't known if the problem is on physical switch or linux bridge. I'll try to reproduce the problem this week and will do some tcpdump to find the problem Now, I see a lot of bug reports on the net about snooping on linux bridge. (don't known if it's about snooping or igmp queries). And I trust more my good old cisco switchs than a 2 year old implementation on linux bridge. here another bug with igmp report from bridge and bonding, if failover occur in bonding, igmp report are not send anymore :/ http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1c3ac4289a0e4d60cbd4787b4a91de4a0c785df1 ----- Mail original ----- De: "Michael Rasmussen" <m...@datanom.net> À: pve-devel@pve.proxmox.com Envoyé: Samedi 9 Mars 2013 21:22:27 Objet: Re: [pve-devel] corosync, multicast problem because of vmbr multicast_snooping enabled On Sat, 9 Mar 2013 18:33:58 +0000 Dietmar Maurer <diet...@proxmox.com> wrote: > > So I think we talk about switch bugs here, not normal behavior. > I am leaning towards the same conclusion since I have never seen those queries cause any problems here. @alexandre: What precise Cisco switch do you see the problems with? What IOS version? Are there any firmware upgrade available? According to Cisco the queries should not cause any problems but maybe this is what causes your problems: "Multicast routers send host-query messages periodically to refresh their knowledge of memberships present on their networks. If, after some number of queries, the Cisco IOS software discovers that no local hosts are members of a multicast group, the software stops forwarding onto the local network multicast packets from remote origins for that group and sends a prune message upstream toward the source." http://www.cisco.com/en/US/docs/ios/12_2/ip/configuration/guide/1cfmulti.html#wp1067822 -- Hilsen/Regards Michael Rasmussen Get my public GnuPG keys: michael <at> rasmussen <dot> cc http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xD3C9A00E mir <at> datanom <dot> net http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xE501F51C mir <at> miras <dot> org http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xE3E80917 -------------------------------------------------------------- The moving cursor writes, and having written, blinks on. _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
