[pve-devel] [PATCH] bridge: disable igmp querier by default

[Alexandre DERUMIER]

>>I do tests on IMS (switch is built in, AXXSW1GB, nothing configured), on a "3Com Baseline Switch 2928" also in several virtualization setups, including VMware WS. 

Ok, so both are managed switchs.

I have read the doc, they have both igmp snooping feature. I don't known if it's enabled by default.
(But if corosync take time to have multicast, I think it's enabled)


Igmp querier is available on 3com switch, is it enabled ? if yes, check the Query interval, try to set it to a small value, like 5-10s

I don't known if AXXSW1GB have an igmp querier?


What you can do is "tcpdump -i vmbr0 igmp", and check if you see "igmp query v2" packets.





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

De: "Martin Maurer" <martin at proxmox.com> 
À: "Dietmar Maurer" <dietmar at proxmox.com>, "Alexandre DERUMIER" <aderumier at odiso.com> 
Cc: pve-devel at pve.proxmox.com 
Envoyé: Mercredi 13 Mars 2013 21:46:09 
Objet: RE: [pve-devel] [PATCH] bridge: disable igmp querier by default 

> -----Original Message----- 
> From: pve-devel-bounces at pve.proxmox.com [mailto:pve-devel- 
> bounces at pve.proxmox.com] On Behalf Of Dietmar Maurer 
> Sent: Mittwoch, 13. März 2013 18:54 
> To: Alexandre DERUMIER 
> Cc: pve-devel at pve.proxmox.com 
> Subject: Re: [pve-devel] [PATCH] bridge: disable igmp querier by default 
> 
> > I think this is because you need to wait for an igmp query before the 
> > multicast works. 
> > (my cisco send send around each minute by default). 
> > 
> > Does Martin used managed or unmanaged switches ? 
> 
> I guess 'unmanaged'. 

I do tests on IMS (switch is built in, AXXSW1GB, nothing configured), on a "3Com Baseline Switch 2928" also in several virtualization setups, including VMware WS. 

Martin