[ovs-discuss] How to set up GRE tunnel on openvswitch?

YIMIN CHEN ymchen.nbzj at gmail.com
Mon May 28 01:50:07 UTC 2012

Hi Justin,

Thank you very much for your help! I had similar configuration on my
setup. I wanted to add a flow to ovs to forward to the gre0 when
traffic is going to other host. ovs-ofctl has such command to add
flow, with set_tunnel option to set the action. However, the option
takes an 32-bits ID, and I am not sure what ID I should use? "gre0"?


On Fri, May 25, 2012 at 3:03 PM, Justin Pettit <jpettit at nicira.com> wrote:
> On May 24, 2012, at 8:43 PM, Ethan Jackson wrote:
>>> Sorry I have so many questions. I couldn't find a detailed
>>> documentation on how this tunneling feature works and still unclear
>>> about the concept. If any of you have worked on tunneling, could you
>>> please kindly shed lights on this? Thank you so much!
>> Configuration of tunnels is documented thoroughly in the
>> ovs-vswitchd.conf.db man page.  They are pretty straight forward, when
>> traffic is output to a tunnel, it is encaped, and then forwarded to
>> the remote_ip configured in the database.
> There's also an example of actually creating the port in the ovs-vsctl man page:
>       Add a GRE tunnel port gre0 to remote IP address to bridge br0:
>              ovs-vsctl add-port br0  gre0 -- set Interface gre0 type=gre options:remote_ip=
> --Justin

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