Assuming you are referring to the software OpenFlow reference implementation, I
don't think it ever supported STP in any meaningful way. Typically, I've seen
STP implemented by using the OFPPC_NO_FLOOD flag on the port, which is manually
toggled by the controller. Unless you are talking about a different mechanism,
that should also work for you on Open vSwitch. Depending on how old your
source code is, we fixed a bug related to that in October:
http://openvswitch.org/pipermail/dev_openvswitch.org/2010-October/003659.html
--Justin
On Jan 27, 2011, at 4:20 AM, sachin sharma wrote:
>
> Dear All,
>
> I am working with openvswitches. But the problem I am observing is the loop
> formation in my the routing AI, available in NOX. I found that openflow
> switches has stp option to enable or disable spanning tree protocol. But the
> same option is not available with openvswitches. The part of code which is
> available with openflow for stp is removed from openvswitch.
>
> Is there any similar option or way is available with openvswitch to prevent
> the loop formation.
>
> Thanks & Regards,
> Sachin Sharma
>
>
>
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