[pox-dev] The ordering if confilictions in different modules.

[Murphy McCauley]

On Feb 2, 2013, at 10:28 AM, Weiyang Mo wrote:
> Thanks. Corrently I consider this because sometimes it's more convenient to create a new module for some specific traffic with running a general module at the same time.
>  
> For example, If I need handle UDP traffic according to the data rate specificly, I create a new module called handleUDP.py. However for other traffic still go shortest hops (l2_multi).
>  
> Currently for safety, I should also revise l2_multi to exclude the UDP traffic (e.g. insert flowentry if packet not UDP) because l2_multi listens to packet_in and set entries for all types of traffic, which probably a confliction.

You don't need to alter l2_multi.  Add a PacketIn handler with a higher priority than default.  If you don't want l2_multi to see the packet, halt the event.

The misc.mac_blocker component is an example of this.

-- Murphy