[ovs-discuss] Support for policy based mirroring?

Justin Pettit jpettit at nicira.com
Fri Apr 29 16:44:30 UTC 2011

On Apr 29, 2011, at 9:20 AM, Ben Pfaff wrote:

> On Fri, Apr 29, 2011 at 08:44:09AM -0400, monami sinha wrote:
>>  I am running ovs-vswitchd and I have setup a bridge where both rx and tx traffic on one port (say vif0) 
>> is being mirrored to an output port (say vif4). This configuration was done using ovs-vsctl. This mirrors
>> all rx and tx packets on vif0 to vif4. However, I am interested in not mirroring all traffic on port vif0 but only
>> traffic which matches some filter criteria (arbitrary combination of L2 and L3 headers). I want to filter 
>> only the mirrored traffic. The normal traffic to/from vif0 shouldnt be affected.
>>  Is this possible using ovs-ofctl or any other means? Any help/pointers on this question will be greatly appreciated.
> You can write OpenFlow flows that do this, but short of that OVS
> doesn't have any special support for it.

Just to be a bit more specific, you could do this with "ovs-ofctl add-flow" commands where you specify multiple output ports in the action list.


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