[ovs-discuss] Questions regarding tunnel reconfiguration

Ben Pfaff blp at ovn.org
Fri Jul 14 15:48:32 UTC 2017

On Fri, Jul 14, 2017 at 02:39:26PM +0000, Balazs Nemeth wrote:
> 1. Currently it is possible to reconfigure the type of an OpenFlow
> tunnel port in OVS (e.g. from gre to vxlan). Is it OK to reconfigure
> the port type, like this?

Yes.  If it doesn't work, that is a bug.

> 2. Currently it is allowed to reconfigure the dst_port option of on OpenFlow tunnel port. It is possible to set unique dst_port for a VXLAN tunnel, e.g. the default 6081 UDP port of Geneve tunnels, and vice versa. Is it OK, to reconfigure ports like this?

Yes.  If it doesn't work, that is a bug.

> In this case the tnl_port_in structure will not be correct in this case (printed by ovs-appctl tnl/ports/show -v). The following entries will be seen in case of originally 1-1 VXLAN/Geneve port existing, and the VXLAN is reconfigured with dst_port=6081 option. There will be no vxlan_sys_6081 (2) member in tnl_port_in structure.

Sounds like a bug.

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