[ovs-dev] Support for MCAST_Snooping

Flavio Leitner fbl at redhat.com
Thu Dec 4 12:00:59 UTC 2014


On Thu, Dec 04, 2014 at 03:25:08PM +0530, Aman Kumar wrote:
> Thanks a lot guys it worked.....[?]

Glad to hear that!
fbl


> 
> On Wed, Dec 3, 2014 at 6:09 PM, Flavio Leitner <fbl at redhat.com> wrote:
> 
> > On Wed, Dec 03, 2014 at 03:16:34PM +0530, Aman Kumar wrote:
> > > > It supports only IGMPv1 and IGMPv2, so make sure the membership
> > > reports are using either one of those versions.
> > >
> > > The multicast snooping works as part of action NORMAL, so if you
> > > are steering your traffic using other flow actions, then it wouldn't
> > > work.
> > >
> > > Yes, action is NORMAL. I am using Ubuntu-12.04 and man page of Ubuntu
> > says
> > > variables net.inet.igmp.v2enable and  net.inet.igmp.v1enable are enabled
> > by
> > > default in the link  "
> > > http://manpages.ubuntu.com/manpages/precise/man4/igmp.4freebsd.html" .
> > But
> > > i am not able to see these variables in any of the files . I checked
> > > /etc/sysctl.conf file also, but i didn't find anything in this file.
> > >
> > > Can you please help me how to check IGMPv1 and IGMPv2 is enabled  or not
> > in
> > > Ubuntu-12.04 ?
> >
> > You just need to run the command below on any Linux system to force
> > the IGMP version 2:
> > # echo 2 > /proc/sys/net/ipv4/conf/all/force_igmp_version
> >
> > If I recall correctly, it doesn't change opened sockets/running apps,
> > so you need to run the above first and then run the mcast app.
> >
> > This is on my host running ovs bridge from master branch of today:
> > # ovs-vsctl set Bridge ovsbr0 mcast_snooping_enable=true
> > [... run the mcast client app in the VM ...]
> > # ovs-appctl mdb/show ovsbr0
> >  port  VLAN  GROUP                Age
> >     4     0  225.1.1.1            11
> >
> > fbl
> >
> > >
> > >
> > > On Tue, Dec 2, 2014 at 8:28 PM, Flavio Leitner <fbl at redhat.com> wrote:
> > >
> > > > On Tue, Dec 02, 2014 at 07:57:19PM +0530, Aman Kumar wrote:
> > > > > Hi Flavio,
> > > > >
> > > > > I am also working with Neethi Shashidhar
> > > > >
> > > > >  > You said to Look at the bridge commands mdb/flush and mdb/show at
> > > > > ovs-vswitch(8) man-page.
> > > > >
> > > > >      I ran the command  "sudo ovs-appctl mdb/show br-int" , this
> > should
> > > > > show details(like: port, vlan and group) of some hosts which are
> > doing
> > > > > multicasting. But it is not showing      any host details. Switch is
> > not
> > > > > able to snoop all those details.
> > > >
> > > > It supports only IGMPv1 and IGMPv2, so make sure the membership
> > > > reports are using either one of those versions.
> > > >
> > > > The multicast snooping works as part of action NORMAL, so if you
> > > > are steering your traffic using other flow actions, then it wouldn't
> > > > work.
> > > >
> > > > Does the above help?
> > > >
> > > > fbl
> > > >
> >





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