[pox-dev] Changing the default action.

[Murphy McCauley]

I wouldn't say there is such a thing as a default action.  There are entries consisting of a match plus actions.  When an entry matches, its actions are executed.  I'd also say there is a "miss action" which is executed when no entry matches.  In OpenFlow 1.0, this isn't adjustable -- it's always send-to-controller.

You can create your own "default action" using multiple tables, though:

table 0:
<Wildcard> : resubmit(table=1), flood()

.. now the "default action" is to flood.  The "real" entries should now be in table 1.  If an entry in table 1 wants to avoid the default action, it needs to explicitly end with an exit action.

-- Murphy

On Dec 8, 2013, at 11:03 PM, Jayanth Silesh <jayanthsileshs.forums at gmail.com> wrote:

> Hello,
> 
> I have two flow entries in my table1:
> 
>  cookie=0x0, duration=66.042s, table=1, n_packets=62, n_bytes=2604, idle_age=3, hard_age=62, in_port=1 actions=load:0x7->NXM_NX_REG5[]
>  cookie=0x0, duration=66.042s, table=1, n_packets=0, n_bytes=0, idle_age=66, in_port=2, NXM_NX_REG5[]=0x7 actions=output:1
> 
> 
> So, when the packet is received, it will match will the flow entry1 but the action is just to change the value of the register only.
> So does the switch drop the packet after changing the register value?
> If so, then drop is the default action. Is there any way to change the default action for a particular table?
> 
> 
> Thanks,
> Jayanth