> On Mar 16, 2015, at 12:32 AM, 张晨 <zhangchen9...@126.com> wrote:
> 
> hello, dear all!
> 
> Openflow spec doesn't specify how to direct flow entry with the same priority 
> and match fields to be selected. For example, i have an entry for 1.0.0.0/24, 
> and another for 1.0.0.1/32 with all the other fields the same(priority same, 
> too), how should these two entry be selected in ovs? Apparently, i hope the 
> second to be matched. Or only the priority field could save me?

The OpenFlow spec explicitly states that it's undefined:

    If there are multiple matching flow entries with the same highest priority, 
the selected flow entry is explicitly undefined.

I wouldn't make assumption about how OVS chooses one, so just make it explicit 
by setting priorities.

--Justin


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