[ovs-discuss] Traffic among the VMS on the same host

[Ramana Reddy]

Hi Ben Pfaff,
Thanks for your quick reply. Yaa its work if I set a GRE tunnel "tunnel1"
from
VM1 to OpenVswitch( External) /Linux Machine and "tunnel2" from VM2 to
OpenVswitch(External)/Linux Machine.
In this setup, the OpenVswitch (External) creating two data paths dp0 and
dp1 as each tunnel requires one bridge.
And we have to forward the packets from dp0 to dp1. (how?)

Can we do this with a single datapath dp0?. ( single data path + two tunnels
)

Thanks,
Ramana.

P.S : I have taken the Linux machine as another linux machine with
OpenVswitch.



On Thu, Dec 16, 2010 at 10:58 PM, Ben Pfaff <blp at nicira.com> wrote:

> On Thu, Dec 16, 2010 at 09:28:31PM +0530, Ramana Reddy wrote:
> > Hi Everyone, This is my set up.
>
> It's a little hard to see.  I think you must have made it with a
> proportional font or a tab width different from mine.
>
> > VM1 and VM2 are running on Host machine. According the paper "Extending
> > Networking into the
> > Virtualization Layer" from ovenvswitch, we can create virtual private
> > networks between "VM1 and Linux Machine"
> > and "VM2 and Linux Machine". The main intension is here that the traffic
> > from VM1 to VM2 should travel
> > through Linux Machine ( Now its going directly from VM1->VM2).
>
> You can use GRE tunnels for this.  The Interface table describes how to
> configure GRE tunnels with Open vSwitch:
> http://openvswitch.org/ovs-vswitchd.conf.db.5.pdf
>
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