[pox-dev] How the class of Switch (EventMixin) in l2_multi works?

[博威张]

Hi,

I have following confusions about the class of *Switch (EventMixin) *in*
l2_multi *:
1.No instance of the class of *Switch (EventMixin)* has been found in*
component
of l2_multi, so how does it work*?
2. It doesn't listen to any components(including the *core.openflow*) , so
how will the function of *_handle_PacketIn work?*
*3. *It doesn't raise any events and even doesn't have the* _eventMixin_events
set, *why does it inherit from* revent.EventMixin? *

Thank you!
Bowei