On Sun, 10 Mar 2013 10:41:53 +0100 (CET) Alexandre DERUMIER <aderum...@odiso.com> wrote:
> > So, I don't known for HP switchs, but for Cisco switches it seem to break the > election of igmp. > Some thoughts: 1) You have an aggregation spanning over two switches, I only use one 2) The switch is up before the pve hosts and maybe HP switches, given the are configured to be querier, disable election and forces querier state because I never see any querying on my network coming from the switch. It is only the pve hosts which sends out queries. 3) If none of your Cisco switches are configured as querier they use simple election to determine querier 4) When I had not configured my switch as querier I seem to recall a broken multicast on the vlan too. Some tests you can performe: 1) Configure your switches to always have numerical lower IP than any hosts on the same vlan 2) Designate one or both of your switches as querier If both of your tests gives a successful result I think the conclusion must be that the linux bridge in some way brakes the election since when you start your hosts one of your switches must be the querier but after some time the querier changes to one of your hosts presumably because your switches are having a numerical higher IP than one or all of your pve hosts. > > Maybe my problem was that my proxmox host was the igmp quierer, and when I > have shutted it down, no other igmp quierer have worked, and snooping have > blocked all mutlticast address. > or maybe "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." PS. Are your mail client broken because it removes the List-Id from your replies in which case other mailers will reply only to you when replying if you forget to say 'reply to all'. -- 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 -------------------------------------------------------------- Democracy is the name we give the people whenever we need them. -- Arman de Caillavet, 1913
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