[ovs-discuss] Selecting egress interface for GRE tunnel

Jesse Gross jesse at nicira.com
Tue Jan 8 17:21:40 UTC 2013


On Mon, Jan 7, 2013 at 7:38 PM, Jeff Welsch <jeff at jeffwelsch.com> wrote:
> Hello,
>
> Is there a way to specify the egress interface for a GRE tunnel?  I am matching flows and sending them to a tunnel using an output action.  This works fine when my remote IP is on eth0, but I would like to send some tunnels out through eth1, depending on their destination address.  I am trying to accomplish this with static routes in Linux, but they do not seem to be followed (probably the expected behavior with OVS).  I cannot find a way to also send the tunnel traffic out a specific interface using a flow mod.  How would I accomplish this?

OVS should follow the Linux routing table, so static routes are the
right way to accomplish this.  Why do you say they don't work?



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