[ovs-dev] [PATCH] FAQ: Describe how bonded ports interact with OpenFlow.

Ben Pfaff blp at nicira.com
Mon Oct 1 20:18:35 UTC 2012

Signed-off-by: Ben Pfaff <blp at nicira.com>
 FAQ |   21 +++++++++++++++++++++
 1 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/FAQ b/FAQ
index a98739c..b14bfa4 100644
--- a/FAQ
+++ b/FAQ
@@ -747,6 +747,27 @@ A: ovs-dpctl queries a kernel datapath, not an OpenFlow switch.  It
    won't display the information that you want.  You want to use
    "ovs-ofctl dump-flows" instead.
+Q: It looks like each of the interfaces in my bonded port shows up
+   as an individual OpenFlow port.  Is that right?
+A: Yes, Open vSwitch makes individual bond interfaces visible as
+   OpenFlow ports, rather than the bond as a whole.  The interfaces
+   are treated together as a bond for only a few purposes:
+       - Sending a packet to the OFPP_NORMAL port.  (When an OpenFlow
+         controller is not configured, this happens implicitly to
+         every packet.)
+       - The "autopath" Nicira extension action.  However, "autopath"
+         is deprecated and scheduled for removal in February 2013.
+       - Mirrors configured for output to a bonded port.
+   It would make a lot of sense for Open vSwitch to present a bond as
+   a single OpenFlow port.  If you want to contribute an
+   implementation of such a feature, please bring it up on the Open
+   vSwitch development mailing list at dev at openvswitch.org.

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