If you add multiple output actions, it simply means that the packet is 
duplicated.

You could rewrite the address to be a multicast address, and you can create 
flow table entries that act on multicast addresses, but there's no "built in" 
support for multicast in the OpenFlow 1.0 spec.  Of course, a switch may have 
its own multicast behavior outside of OpenFlow, but that's up to the switch.

Hope that helps.

-- Murphy

On Jul 12, 2012, at 1:08 AM, Qingyun Zuo wrote:

> Hi,
>      Does OpenFlow switch support multipath unicast? or multicast? 
>      When I edit a flow entry, I add two egress ports to the ACTION, is it 
> multicast? 
> 
> -- 
> Best Regards
> Zuo Qingyun
> 

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