[ovs-discuss] ovs-ofctl vs openflow 1.x vs ?

Raymond Burkholder ray at oneunified.net
Mon Oct 9 02:09:23 UTC 2017

I've written some openflow controller code to submit openflow 
line-protocol based commands.

In looking at the ovs-fields document, there appears to be OVS functions 
available which are not available via openflow protocol commands.

Those extensions seem to be available in ovs-ofctl though.

Is there an API way of doing things instead of going through ovs-ofctl?  
Or are the NXM extensions available in one of the OpenFlow versions?  
For example, I've been programming via OF1.4.1 at this point (found at 

 From the ovs-fields document, there is NXM_NX_CONJ_ID (for conjunctive 
match fields), which shows as not being an openflow protocol based function.

IE, could flow tables be updated via JSON documents, like what is used 
to update the ovsdb?

Or am I missing something obvious?

Raymond Burkholder
ray at oneunified.net

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