[ovs-discuss] ubuntu openvswitch gre interface

Jesse Gross jesse at nicira.com
Thu Dec 9 22:09:46 UTC 2010


On Thu, Dec 9, 2010 at 10:42 AM, frank <frank at cloud.com> wrote:
>
>>> However interface gre0 doesn't show up in ifconfig.
>>
>> No, it won't.  The Open vSwitch implementation of GRE doesn't create
>> Linux network devices.
>
> so, if I want to debug, how to track if my traffic was going to gre
> interface?
> just tcdump the really eth0 of my host?

Yes, that's the best way to see the traffic.  You can also use
ovs-dpctl dump-flows to see the flows going to the GRE port inside
Open vSwitch.




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