[ovs-discuss] Two GRE tunnels with same src/dst

[Romain Lenglet]

Hi Frank,
You can't name a port the same name as your bridge, as a bridge always
explicitly has an internal interface with the same name as the bridge,
and all ports must have different names.
Try naming your GRE port differently, e.g. test2.
Regards,
--
Romain Lenglet

On Friday, December 31, 2010, Frank <frank at cloud.com> wrote:
> Hi guys:
>     I just try to create two GRE tunnels between two hosts, the result is I can't do this.
>     vswitch complains "could not create iface test: File exists" when creating second tunnel.
>     I did set different GRE keys for tunnels.
>
>     I google and get some articles said it's possible to create multiple GRE tunnels with same src/dst.
>     I am curious what technical barrier prevents our doing since GRE key is an natural tag to distinguish different tunnels.
>
>     BTW: when the interface created failed, ovs-vsctl also returns a uuid as if it succeeds. This is very puzzle, the real result in log is:
> "
> Dec 30 14:40:06|04201|bridge|INFO|created port test on bridge test
> Dec 30 14:40:06|04202|bridge|WARN|could not create iface test: File exists
> Dec 30 14:40:06|04203|bridge|WARN|bridge test: port test has no interfaces, dropping
> "
>     cloud we have more graceful way to report such failure?
>
>     thank you.
>
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